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Sherif R, Spence EC, Smith J, McCarthy MJH. Intraoperative imaging adequacy and its impact on unplanned return-to-theatre rates in pedicle screw instrumentation. World J Orthop 2025; 16:103955. [PMID: 40124730 PMCID: PMC11924020 DOI: 10.5312/wjo.v16.i3.103955] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/05/2024] [Revised: 01/13/2025] [Accepted: 02/18/2025] [Indexed: 03/12/2025] Open
Abstract
BACKGROUND Pedicle screw instrumentation is a critical technique in spinal surgery, offering effective stabilization for various spinal conditions. However, the impact of intraoperative imaging quality-specifically the use of both anteroposterior (AP) and lateral views-on surgical outcomes remains insufficiently studied. Evaluating whether the adequacy of these imaging modalities affects the risk of unplanned returns to theatre (URTT) within 90 days due to screw malplacement is essential for refining surgical practices and improving patient care. AIM To evaluate how intraoperative imaging adequacy influences unplanned return-to-theatre rates, focusing on AP and lateral fluoroscopic views. METHODS This retrospective cohort study analyzed 1335 patients who underwent thoracolumbar and sacral pedicle screw instrumentation between January 2013 and December 2022. Data on intraoperative imaging adequacy, screw placement, and URTT events were collected and statistically analyzed using IBM SPSS v23. Imaging adequacy was assessed based on the presence of both AP and lateral views, and outcomes were compared between imaging groups. RESULTS A total of 9016 pedicle screws were inserted, with 82 screws identified as malplaced in 52 patients. Of these, 46 patients required URTT due to screw malplacement, with 37 returning within 90 days (URTT90). Patients with both AP and lateral imaging saved intraoperatively had significantly lower URTT90 rates compared to those with only lateral imaging saved, demonstrating the critical role of imaging adequacy in improving surgical outcomes. CONCLUSION This study underscores that comprehensive intraoperative imaging with both AP and lateral views reduces unplanned returns, improves outcomes, enhances precision, and offers a cost-effective approach for better spinal surgery results.
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Affiliation(s)
- Ramy Sherif
- Department of Spinal Surgery, University Hospital of Wales, Cardiff CF14 4XW, United Kingdom
| | - Ella Clifford Spence
- Department of Spinal Surgery, Cardiff University, Cardiff CF14 4XW, United Kingdom
| | - Jessica Smith
- Department of Spinal Surgery, Cardiff University, Cardiff CF14 4XW, United Kingdom
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Zellner AA, Prangenberg C, Roos J, Amar SB, Babasiz T, Wahlers C, Eysel P, Oppermann J. A computed tomography-based morphometric analysis of thoracic pedicles in a European population. J Orthop Surg Res 2024; 19:668. [PMID: 39420350 PMCID: PMC11483982 DOI: 10.1186/s13018-024-05171-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/08/2024] [Accepted: 10/13/2024] [Indexed: 10/19/2024] Open
Abstract
PURPOSE The goal of this retrospective study was to perform a CT imaging assessment of thoracic pedicles to provide a representative understanding of pedicle morphology for pedicle-based fixation systems commonly used in orthopedics, trauma and neurosurgery. This study aimed to better understand the morphology of the spine and give spine surgeons a better understanding of thoracic spine anatomy. METHODS In this study, we retrospectively measured the thoracic spine pedicles of a total of 16 males and 16 females, totaling in 768 individual pedicles. For the measurements, we used standardized planes in computed tomography imaging with a maximum slice thickness of 1 mm. RESULTS In brief, we identified significant differences in various measurements of male and female pedicle morphology. The medial cortical wall of the pedicles was significantly thicker than the lateral wall, and, in both sexes, the thoracic vertebral body number four was the vertebra with the least amount of cortical bone in the pedicle. CONCLUSIONS Surgeons performing operations involving pedicle screw placement should be aware of the sex-specific differences in thoracic spine pedicle morphology noted in this research.
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Affiliation(s)
- Alberto Alfieri Zellner
- Klinik und Poliklinik für Orthopädie und Unfallchirurgie, Universitätsklinikum Bonn, Venusberg Campus 1, 53127, Bonn, Deutschland.
| | - Christian Prangenberg
- Klinik und Poliklinik für Orthopädie und Unfallchirurgie, Universitätsklinikum Bonn, Venusberg Campus 1, 53127, Bonn, Deutschland
| | - Jonas Roos
- Klinik und Poliklinik für Orthopädie und Unfallchirurgie, Universitätsklinikum Bonn, Venusberg Campus 1, 53127, Bonn, Deutschland
| | - Soufian Ben Amar
- Klinik und Poliklinik für Orthopädie und Unfallchirurgie, Universitätsklinikum Bonn, Venusberg Campus 1, 53127, Bonn, Deutschland
| | - Tamara Babasiz
- Klinik und Poliklinik für Orthopädie, Unfallchirurgie und Plastische-Ästhetische Chirurgie, Uniklinik Köln, Joseph-Stelzmann-Str. 24, 50931, Köln, Deutschland
| | - Christopher Wahlers
- Klinik und Poliklinik für Orthopädie, Unfallchirurgie und Plastische-Ästhetische Chirurgie, Uniklinik Köln, Joseph-Stelzmann-Str. 24, 50931, Köln, Deutschland
| | - Peer Eysel
- Klinik und Poliklinik für Orthopädie, Unfallchirurgie und Plastische-Ästhetische Chirurgie, Uniklinik Köln, Joseph-Stelzmann-Str. 24, 50931, Köln, Deutschland
| | - Johannes Oppermann
- Klinik und Poliklinik für Orthopädie, Unfallchirurgie und Plastische-Ästhetische Chirurgie, Uniklinik Köln, Joseph-Stelzmann-Str. 24, 50931, Köln, Deutschland
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Haida DM, Mohr P, Won SY, Möhlig T, Holl M, Enk T, Hanschen M, Huber-Wagner S. Hybrid-3D robotic suite in spine and trauma surgery - experiences in 210 patients. J Orthop Surg Res 2024; 19:565. [PMID: 39272126 PMCID: PMC11401291 DOI: 10.1186/s13018-024-05044-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/14/2024] [Accepted: 08/31/2024] [Indexed: 09/15/2024] Open
Abstract
BACKGROUND In modern Hybrid ORs, the synergies of navigation and robotics are assumed to contribute to the optimisation of the treatment in trauma, orthopaedic and spine surgery. Despite promising evidence in the area of navigation and robotics, previous publications have not definitively proven the potential benefits. Therefore, the aim of this retrospective study was to evaluate the potential benefit and clinical outcome of patients treated in a fully equipped 3D-Navigation Hybrid OR. METHODS Prospective data was collected (March 2022- March 2024) after implementation of a fully equipped 3D-Navigation Hybrid OR ("Robotic Suite") in the authors level 1 trauma centre. The OR includes a navigation unit, a cone beam CT (CBCT), a robotic arm and mixed reality glasses. Surgeries with different indications of the spine, the pelvis (pelvic ring and acetabulum) and the extremities were performed. Spinal and non-spinal screws were inserted. The collected data was analysed retrospectively. Pedicle screw accuracy was graded according to the Gertzbein and Robbins (GR) classification. RESULTS A total of n = 210 patients (118 m:92f) were treated in our 3D-Navigation Hybrid OR, with 1171 screws inserted. Among these patients, 23 patients (11.0%) arrived at the hospital via the trauma room with an average Injury Severity Score (ISS) of 25.7. There were 1035 (88.4%) spinal screws inserted at an accuracy rate of 98.7% (CI95%: 98.1-99.4%; 911 GR-A & 111 GR-B screws). The number of non-spinal screws were 136 (11.6%) with an accuracy rate of 99.3% (CI95%: 97.8-100.0%; 135 correctly placed screws). This resulted in an overall accuracy rate of 98.8% (CI95%: 98.2-99.4%). The robotic arm was used in 152 cases (72.4%), minimally invasive surgery (MIS) was performed in 139 cases (66.2%) and wound infection occurred in 4 cases (1,9%). Overall, no revisions were needed. CONCLUSION By extending the scope of application, this study showed that interventions in a fully equipped 3D-Navigation Hybrid OR can be successfully performed not only on the spine, but also on the pelvis and extremities. In trauma, orthopaedics and spinal surgery, navigation and robotics can be used to perform operations with a high degree of precision, increased safety, reduced radiation exposure for the OR-team and a very low complication rate.
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Affiliation(s)
- Dominik M Haida
- Department of Trauma Surgery, Technical University of Munich, Klinikum rechts der Isar, Ismaninger Straße 22, 81675, Munich, Germany
- Department of Trauma Surgery, Diakonie-Klinikum Schwäbisch Hall, Diakoniestraße 10, 74523, Schwäbisch Hall, Germany
| | - Peter Mohr
- Radiation Protection, Diakonie-Klinikum Schwäbisch Hall, Diakoniestraße 10, 74523, Schwäbisch Hall, Germany
| | - Sae-Yeon Won
- Department of Neurosurgery, Rostock University Medical Center, Schillingallee 35, 18057, Rostock, Germany
| | - Thorsten Möhlig
- Department of Trauma Surgery, Diakonie-Klinikum Schwäbisch Hall, Diakoniestraße 10, 74523, Schwäbisch Hall, Germany
| | - Mike Holl
- Department of Trauma Surgery, Diakonie-Klinikum Schwäbisch Hall, Diakoniestraße 10, 74523, Schwäbisch Hall, Germany
| | - Thorsten Enk
- Department of Neurosurgery, Diakonie-Klinikum Schwäbisch Hall, Diakoniestraße 10, 74523, Schwäbisch Hall, Germany
| | - Marc Hanschen
- Department of Trauma Surgery, Technical University of Munich, Klinikum rechts der Isar, Ismaninger Straße 22, 81675, Munich, Germany
| | - Stefan Huber-Wagner
- Department of Trauma Surgery, Technical University of Munich, Klinikum rechts der Isar, Ismaninger Straße 22, 81675, Munich, Germany.
- Department of Trauma Surgery, Diakonie-Klinikum Schwäbisch Hall, Diakoniestraße 10, 74523, Schwäbisch Hall, Germany.
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González-González F, Aguilar-Chávez F, Martínez-Loya C, Marín-Castañeda LA, Arellanes-Chavez CA, Lee Á. Top 100 Most Cited Articles on Intraoperative Image-Guided Navigation in Spine Surgery. Cureus 2024; 16:e67950. [PMID: 39328685 PMCID: PMC11426548 DOI: 10.7759/cureus.67950] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 08/27/2024] [Indexed: 09/28/2024] Open
Abstract
Navigation technologies have become essential in spine surgery over the last decade, offering precise procedures and minimizing risks. To the best of our knowledge, this is the first bibliometric analysis on this topic, providing insights and trends on topics, authors, and journals. The study identifies and analyzes the 100 most cited articles related to navigation in spine surgery. A systematic search was performed in Scopus and Google Scholar to identify all articles related to navigation in spine surgery (38,057 articles). The 100 most cited were analyzed for citations, titles, abstracts, authors, affiliations, keywords, country and institute of origin, year of publication, and level of evidence. The search was conducted in October 2023. The 100 most cited articles were published between 1995 and 2019, with 2010 to 2019 being the most prolific decade (46%). The most cited article had 733 citations, and the paper with the most citations per year averaged 59.27 citations/year. The Spine Journal had the most articles (34%). The United States contributed the most articles (39%). Most publications were clinical research and reviews (94%), with an overall evidence grade of IV-V (63%). A positive trend was noted in the last decade for incorporating augmented reality. This bibliometric analysis offers valuable insights and trends in spine surgery navigation literature. The findings indicate that technological advancements have led to more articles with higher levels of evidence. These pivotal articles shape evidence-based medicine, future surgeons, and industry improvements in navigated spine surgery.
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Affiliation(s)
| | - Felipe Aguilar-Chávez
- Cisne Spine Academy, Star Medica Hospital, Autonomous University of Chihuahua, Chihuahua, MEX
| | - Carolina Martínez-Loya
- Research, Faculty of Medicine and Biomedical Sciences, Autonomous University of Chihuahua, Chihuahua, MEX
| | | | | | - Ángel Lee
- Research, Dr. Manuel Gea González General Hospital, Mexico City, MEX
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Keshavarzi S, Spardy J, Ramchandran S, George S. Use of navigation for anterior and posterior instrumentation in the surgical management of pediatric pathologic lumbosacral deformity. JOURNAL OF CRANIOVERTEBRAL JUNCTION AND SPINE 2024; 15:114-117. [PMID: 38644920 PMCID: PMC11029110 DOI: 10.4103/jcvjs.jcvjs_144_23] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2023] [Accepted: 12/31/2023] [Indexed: 04/23/2024] Open
Abstract
We report the use of computerized tomography (CT)-guided navigation for complex spinal deformity correction (anterior and posterior) in an 8-year-old patient with neurofibromatosis complicated by dystrophic pedicles, dural ectasia, and extensive vertebral scalloping. A retrospective review was conducted of the patient's medical records for the past 3 years, including the patient's office visit notes, operative reports, pre- and 2-year postoperative imaging studies. The patient successfully underwent anterior lumbar interbody fusion from L3-S1 using CT-guided navigation to negotiate the challenges posed by dural ectasia and vertebral body scalloping. One week after the anterior procedure, she underwent navigation-guided T10-to-pelvis posterior instrumented fusion. There were no perioperative or postoperative complications at 2 years. In patients with complex deformities of the spine, including dural ectasia, scalloped vertebral bodies, and decreased pedicle integrity, the use of intraoperative CT-guided navigation can benefit surgeons by facilitating the safe placement of interbody spacers and pedicle screws.
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Affiliation(s)
- Sassan Keshavarzi
- Department of Neurosurgery, Tulane University School of Medicine, New Orleans, LA
| | - Jeffrey Spardy
- Herbert Wertheim College of Medicine, Florida International University, Miami, FL, USA
| | | | - Stephen George
- Department of Orthopedic Surgery, Nicklaus Children’ s Hospital, Miami, FL, USA
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Rosa Filezio M, Peiro-Garcia A, Parsons DL, Thomas K, Ferri-de-Barros F. Accuracy of imaging grading in comparison to open laminectomy to evaluate pedicle screws positioning. Ann Med Surg (Lond) 2024; 86:199-206. [PMID: 38222761 PMCID: PMC10783280 DOI: 10.1097/ms9.0000000000001515] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2023] [Accepted: 11/05/2023] [Indexed: 01/16/2024] Open
Abstract
Study design Prospective experimental study. Objective To compare the accuracy of O-Arm-acquired radiographic and computed tomography (CT) evaluation of thoracic pedicle screw placement with open laminectomy in a simulation laboratory. Summary of background data Improving surgical safety and procedural efficiency during thoracic posterior spine instrumentation is essential for decreasing complication rates and possible related risks. The most common way of verifying the position of pedicle screws during the surgical procedure and immediately postoperatively is to acquire intraoperative fluoroscopic images and plain radiographs of the spine, respectively. Laboratory simulated surgery is a valuable tool to evaluate the accuracy of those exams. Methods Twenty simulation models of scoliosis from T3 to T7 were instrumented by five spine fellows (total of 200 pedicle screws), followed by radiographic and CT images acquired with the assistance of the O-Arm which were evaluated by three independent raters. A fellowship-trained spine neurosurgeon performed laminectomies on the instrumented levels and assessed pedicle integrity (gold standard). Results Forty-eight breaches were identified in the axial direct view after laminectomy. Of those, eighteen breaches were classified as unacceptable. Regarding the sagittal direct view, four breaches were observed, three of which were classified as unacceptable. Overall, both O-arm radiographic and CT evaluations had a significantly high negative predicted value but a low positive predicted value to identify unacceptable breaches, especially in the sagittal plane. The frequency of missed breaches by all three examiners was high, particularly in the sagittal plane. Conclusion Postoperative evaluation of pedicle screws using O-arm-acquired radiographic or CT images may underdiagnose the presence of breaches. In our study, sagittal breaches were more difficult to diagnose than axial breaches. Although most breaches do not have clinical repercussions, this study suggests that this modality of postoperative radiographic assessment may be inaccurate. Level of evidence 4.
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Deng H, Cong Y, Lei J, Li D, Ke C, Fan Z, Wang H, Wang P, Zhuang Y. Effect of O-arm on reduction quality and functional recovery of acetabular dome impaction fractures: a retrospective clinical study. BMC Musculoskelet Disord 2023; 24:858. [PMID: 37919740 PMCID: PMC10621090 DOI: 10.1186/s12891-023-06987-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/20/2023] [Accepted: 10/23/2023] [Indexed: 11/04/2023] Open
Abstract
BACKGROUND Acetabular dome impaction fractures (ADIF) are difficult to reduce and have a high failure rate. Consistency between the acetabulum and the femoral head is usually assessed using intraoperative X-ray fluoroscopy to evaluate the quality of fracture reduction. This study examines the effects of intraoperative mobile 2D/3DX imaging system (O-arm) on the reduction quality and functional recovery of ADIF. METHODS We retrospectively analysed the data of 48 patients with ADIF treated at Honghui Hospital between October 2018 and October 2021.The patients were divided into the X-ray and O-arm groups. The residual step-off and gap displacements in the acetabular dome region were measured, and fracture reduction quality was evaluated. Hip function was evaluated using the modified Merle d'Aubigné and Postel scoring systems. RESULTS There were no significant intergroup differences in the preoperative general data (p > 0.05). The mean residual average step displacement in the acetabular dome region was 3.48 ± 2.43 mm and 1.61 ± 1.16 mm (p < 0.05), while the mean gap displacement was 6.72 ± 3.69 mm and 3.83 ± 1.67 mm (p < 0.05) in the X-ray and the O-arm groups, respectively. In the X-ray group, according to the fracture reduction criteria described by Verbeek and Moed et al., one case was excellent, 13 cases were good, 11 cases were poor; 56% were excellent or good. In the O-arm group, seven cases were excellent, 12 cases were good, and four cases were poor; overall in this group, 82.6% were excellent or good (p < 0.05). A total of 46 patients achieved fracture healing at the last follow-up. In the X-ray group, according to the modified Merle d'Aubigné and Postel function score, three cases were excellent,12 cases were good, six cases were middle, three cases were poor; 62.5% were excellent or good, In the O-arm group, 15 cases were excellent, four cases were good, two cases were middle, one case was poor; 86.4% were excellent or good (p < 0.05). CONCLUSIONS The application of O-arm in ADIF can improve fracture reduction quality and functional recovery.
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Affiliation(s)
- Hongli Deng
- Department of Orthopedic Trauma, Honghui Hospital, Xi'an Jiaotong University, No. 555, East Youyi Road, Xi'an, Shaanxi, 710054, China
| | - Yuxuan Cong
- Department of Orthopedic Trauma, Honghui Hospital, Xi'an Jiaotong University, No. 555, East Youyi Road, Xi'an, Shaanxi, 710054, China
| | - Jinlai Lei
- Department of Orthopedic Trauma, Honghui Hospital, Xi'an Jiaotong University, No. 555, East Youyi Road, Xi'an, Shaanxi, 710054, China
| | - Dongyang Li
- Xi'an Medical University, No. 1, Xinwang Road, Weiyang District, Xi'an, Shaanxi, 710021, China
| | - Chao Ke
- Department of Orthopedic Trauma, Honghui Hospital, Xi'an Jiaotong University, No. 555, East Youyi Road, Xi'an, Shaanxi, 710054, China
| | - Zhiqiang Fan
- Department of Orthopedic Trauma, Honghui Hospital, Xi'an Jiaotong University, No. 555, East Youyi Road, Xi'an, Shaanxi, 710054, China
| | - Hu Wang
- Department of Orthopedic Trauma, Honghui Hospital, Xi'an Jiaotong University, No. 555, East Youyi Road, Xi'an, Shaanxi, 710054, China
| | - Pengfei Wang
- Department of Orthopedic Trauma, Honghui Hospital, Xi'an Jiaotong University, No. 555, East Youyi Road, Xi'an, Shaanxi, 710054, China
| | - Yan Zhuang
- Department of Orthopedic Trauma, Honghui Hospital, Xi'an Jiaotong University, No. 555, East Youyi Road, Xi'an, Shaanxi, 710054, China.
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Bonello JP, Koucheki R, Abbas A, Lex J, Nucci N, Yee A, Ahn H, Finkelstein J, Lewis S, Larouche J, Toor J. Comparison of major spine navigation platforms based on key performance metrics: a meta-analysis of 16,040 screws. EUROPEAN SPINE JOURNAL : OFFICIAL PUBLICATION OF THE EUROPEAN SPINE SOCIETY, THE EUROPEAN SPINAL DEFORMITY SOCIETY, AND THE EUROPEAN SECTION OF THE CERVICAL SPINE RESEARCH SOCIETY 2023; 32:2937-2948. [PMID: 37474627 DOI: 10.1007/s00586-023-07865-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/08/2023] [Revised: 05/28/2023] [Accepted: 07/09/2023] [Indexed: 07/22/2023]
Abstract
PURPOSE The objective of this meta-analysis is to compare available computer-assisted navigation platforms by key performance metrics including pedicle screw placement accuracy, operative time, neurological complications, and blood loss. METHODS A systematic review was conducted using major databases for articles comparing pedicle screw accuracy of computer-assisted navigation to conventional (freehand or fluoroscopy) controls via post-operative computed tomography. Outcome data were extracted and pooled by random-effects model for analysis. RESULTS All navigation platforms demonstrated significant reduction in risk of breach, with Stryker demonstrating the highest accuracy compared to controls (OR 0.16 95% CI 0.06 to 0.41, P < 0.00001, I2 = 0%) followed by Medtronic. There were no significant differences in accuracy or most surgical outcome measures between platforms; however, BrainLab demonstrated significantly faster operative time compared to Medtronic by 30 min (95% CI - 63.27 to - 2.47, P = 0.03, I2 = 74%). Together, there was significantly lower risk of major breach in the navigation group compared to controls (OR 0.42, 95% CI 0.27-0.63, P < 0.0001, I2 = 56%). CONCLUSIONS When comparing between platforms, Stryker demonstrated the highest accuracy, and Brainlab the shortest operative time, both followed by Medtronic. No significant difference was found between platforms regarding neurologic complications or blood loss. Overall, our results demonstrated a 60% reduction in risk of major breach utilizing computer-assisted navigation, coinciding with previous studies, and supporting its validity. This study is the first to directly compare available navigation platforms offering insight for further investigation and aiding in the institutional procurement of platforms. LEVEL 3 EVIDENCE: Meta-analysis of Level 3 studies.
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Affiliation(s)
- John-Peter Bonello
- Temerty Faculty of Medicine, University of Toronto, 1 King's College Circle, Toronto, ON, M5S 1A8, Canada.
| | - Robert Koucheki
- Temerty Faculty of Medicine, University of Toronto, 1 King's College Circle, Toronto, ON, M5S 1A8, Canada
- Institute of Biomedical Engineering, University of Toronto, Toronto, Canada
| | - Aazad Abbas
- Temerty Faculty of Medicine, University of Toronto, 1 King's College Circle, Toronto, ON, M5S 1A8, Canada
| | - Johnathan Lex
- Institute of Biomedical Engineering, University of Toronto, Toronto, Canada
- Division of Orthopaedic Surgery, University of Toronto, Toronto, Canada
| | - Nicholas Nucci
- Division of Orthopaedic Surgery, University of Ottawa, Ottawa, Canada
| | - Albert Yee
- Division of Orthopaedic Surgery, University of Toronto, Toronto, Canada
- Department of Orthopaedic Surgery, Sunnybrook Health Sciences Center, Toronto, Canada
| | - Henry Ahn
- Division of Orthopaedic Surgery, University of Toronto, Toronto, Canada
- Division of Orthopaedic Surgery, St. Michael's Hospital, Toronto, Canada
| | - Joel Finkelstein
- Division of Orthopaedic Surgery, University of Toronto, Toronto, Canada
- Department of Orthopaedic Surgery, Sunnybrook Health Sciences Center, Toronto, Canada
| | - Stephen Lewis
- Division of Orthopaedic Surgery, University of Toronto, Toronto, Canada
- Department of Orthopaedic Surgery, Toronto Western Hospital, Toronto, Canada
| | - Jeremie Larouche
- Division of Orthopaedic Surgery, University of Toronto, Toronto, Canada
- Department of Orthopaedic Surgery, Sunnybrook Health Sciences Center, Toronto, Canada
| | - Jay Toor
- Division of Orthopaedic Surgery, University of Toronto, Toronto, Canada
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Mandelka E, Gierse J, Zimmermann F, Gruetzner PA, Franke J, Vetter SY. Implications of navigation in thoracolumbar pedicle screw placement on screw accuracy and screw diameter/pedicle width ratio. BRAIN & SPINE 2023; 3:101780. [PMID: 38020982 PMCID: PMC10668071 DOI: 10.1016/j.bas.2023.101780] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/14/2023] [Revised: 05/22/2023] [Accepted: 07/10/2023] [Indexed: 12/01/2023]
Abstract
Introduction There is ample evidence that higher accuracy can be achieved in thoracolumbar pedicle screw placement by using spinal navigation. Still, to date, the evidence regarding the influence of the use of navigation on the screw diameter to pedicle width ratio remains limited. Research question The aim of this study was to investigate the implications of navigation in thoracolumbar pedicle screw placement not only on screw accuracy, but on the screw diameter to pedicle width ratio as well. Material and methods In this single-center single-surgeon study, 45 Patients undergoing navigated thoracolumbar pedicle screw placement were prospectively included. The results were compared with a matched comparison group of patients in which screw placement was performed under fluoroscopic guidance. The screw accuracy and the screw diameter to pedicle width ratio of every screw were compared between the groups. Results Screw accuracy was significantly higher in the navigation group compared to the fluoroscopic guidance group, alongside with a significant increase of the screw diameter to pedicle width ratio by approximately 10%. In addition, both the intraoperative radiation dose and the operating time tended to be lower in the study group. Conclusion This study was able to show that navigated thoracolumbar pedicle screw placement not only increases the accuracy of screw placement but also facilitates the selection of the adequate screw sizes, which according to the literature has positive effects on fixation strength. Meanwhile, the use of navigation did not negatively affect the time needed for surgery or the patient's intraoperative exposure to radiation.
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Affiliation(s)
- Eric Mandelka
- Research group Medical Imaging and Navigation in Trauma and Orthopedic Surgery (MINTOS), Department of Orthopedics and Trauma Surgery, BG Klinik Ludwigshafen, Ludwig-Guttmann-Str. 13, 67071, Ludwigshafen, Germany
| | - Jula Gierse
- Research group Medical Imaging and Navigation in Trauma and Orthopedic Surgery (MINTOS), Department of Orthopedics and Trauma Surgery, BG Klinik Ludwigshafen, Ludwig-Guttmann-Str. 13, 67071, Ludwigshafen, Germany
| | - Felix Zimmermann
- Research group Medical Imaging and Navigation in Trauma and Orthopedic Surgery (MINTOS), Department of Orthopedics and Trauma Surgery, BG Klinik Ludwigshafen, Ludwig-Guttmann-Str. 13, 67071, Ludwigshafen, Germany
| | - Paul A. Gruetzner
- Research group Medical Imaging and Navigation in Trauma and Orthopedic Surgery (MINTOS), Department of Orthopedics and Trauma Surgery, BG Klinik Ludwigshafen, Ludwig-Guttmann-Str. 13, 67071, Ludwigshafen, Germany
| | - Jochen Franke
- Research group Medical Imaging and Navigation in Trauma and Orthopedic Surgery (MINTOS), Department of Orthopedics and Trauma Surgery, BG Klinik Ludwigshafen, Ludwig-Guttmann-Str. 13, 67071, Ludwigshafen, Germany
| | - Sven Y. Vetter
- Research group Medical Imaging and Navigation in Trauma and Orthopedic Surgery (MINTOS), Department of Orthopedics and Trauma Surgery, BG Klinik Ludwigshafen, Ludwig-Guttmann-Str. 13, 67071, Ludwigshafen, Germany
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Matinfar S, Salehi M, Suter D, Seibold M, Dehghani S, Navab N, Wanivenhaus F, Fürnstahl P, Farshad M, Navab N. Sonification as a reliable alternative to conventional visual surgical navigation. Sci Rep 2023; 13:5930. [PMID: 37045878 PMCID: PMC10097653 DOI: 10.1038/s41598-023-32778-z] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/15/2022] [Accepted: 04/02/2023] [Indexed: 04/14/2023] Open
Abstract
Despite the undeniable advantages of image-guided surgical assistance systems in terms of accuracy, such systems have not yet fully met surgeons' needs or expectations regarding usability, time efficiency, and their integration into the surgical workflow. On the other hand, perceptual studies have shown that presenting independent but causally correlated information via multimodal feedback involving different sensory modalities can improve task performance. This article investigates an alternative method for computer-assisted surgical navigation, introduces a novel four-DOF sonification methodology for navigated pedicle screw placement, and discusses advanced solutions based on multisensory feedback. The proposed method comprises a novel four-DOF sonification solution for alignment tasks in four degrees of freedom based on frequency modulation synthesis. We compared the resulting accuracy and execution time of the proposed sonification method with visual navigation, which is currently considered the state of the art. We conducted a phantom study in which 17 surgeons executed the pedicle screw placement task in the lumbar spine, guided by either the proposed sonification-based or the traditional visual navigation method. The results demonstrated that the proposed method is as accurate as the state of the art while decreasing the surgeon's need to focus on visual navigation displays instead of the natural focus on surgical tools and targeted anatomy during task execution.
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Affiliation(s)
- Sasan Matinfar
- Computer Aided Medical Procedures (CAMP), Technical University of Munich, 85748, Munich, Germany.
- Nuklearmedizin rechts der Isar, Technical University of Munich, 81675, Munich, Germany.
| | - Mehrdad Salehi
- Computer Aided Medical Procedures (CAMP), Technical University of Munich, 85748, Munich, Germany
| | - Daniel Suter
- Department of Orthopaedics, Balgrist University Hospital, 8008, Zurich, Switzerland
| | - Matthias Seibold
- Computer Aided Medical Procedures (CAMP), Technical University of Munich, 85748, Munich, Germany
- Research in Orthopedic Computer Science (ROCS), Balgrist University Hospital, University of Zurich, Balgrist Campus, 8008, Zurich, Switzerland
| | - Shervin Dehghani
- Computer Aided Medical Procedures (CAMP), Technical University of Munich, 85748, Munich, Germany
- Nuklearmedizin rechts der Isar, Technical University of Munich, 81675, Munich, Germany
| | - Navid Navab
- Topological Media Lab, Concordia University, Montreal, H3G 2W1, Canada
| | - Florian Wanivenhaus
- Department of Orthopaedics, Balgrist University Hospital, 8008, Zurich, Switzerland
| | - Philipp Fürnstahl
- Research in Orthopedic Computer Science (ROCS), Balgrist University Hospital, University of Zurich, Balgrist Campus, 8008, Zurich, Switzerland
| | - Mazda Farshad
- Department of Orthopaedics, Balgrist University Hospital, 8008, Zurich, Switzerland
| | - Nassir Navab
- Computer Aided Medical Procedures (CAMP), Technical University of Munich, 85748, Munich, Germany
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11
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Yamout T, Orosz LD, Good CR, Jazini E, Allen B, Gum JL. Technological Advances in Spine Surgery: Navigation, Robotics, and Augmented Reality. Orthop Clin North Am 2023; 54:237-246. [PMID: 36894295 DOI: 10.1016/j.ocl.2022.11.008] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/11/2023]
Abstract
Accurate screw placement is critical to avoid vascular or neurologic complications during spine surgery and to maximize fixation for fusion and deformity correction. Computer-assisted navigation, robotic-guided spine surgery, and augmented reality surgical navigation are currently available technologies that have been developed to improve screw placement accuracy. The advent of multiple generations of new technologies within the past 3 decades has presented surgeons with a diverse array of choices when it comes to pedicle screw placement. Considerations for patient safety and optimal outcomes must be paramount when selecting a technology.
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Affiliation(s)
- Tarek Yamout
- Virginia Spine Institute, 11800 Sunrise Valley Drive, Suite 800, Reston, VA 20191, USA
| | - Lindsay D Orosz
- National Spine Health Foundation, 11800 Sunrise Valley Drive, Suite 330, Reston, VA 20191, USA
| | - Christopher R Good
- Virginia Spine Institute, 11800 Sunrise Valley Drive, Suite 800, Reston, VA 20191, USA
| | - Ehsan Jazini
- Virginia Spine Institute, 11800 Sunrise Valley Drive, Suite 800, Reston, VA 20191, USA
| | - Brandon Allen
- National Spine Health Foundation, 11800 Sunrise Valley Drive, Suite 330, Reston, VA 20191, USA
| | - Jeffrey L Gum
- Norton Leatherman Spine Center, 210 East Gray Street Suite 900, Louisville, KY 40202, USA.
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12
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Delcont MR, Ou-Yang DC, Burger EL, Patel VV, Wessell NM, Kleck CJ. Alternative Uses of O-Arm and Stealth Navigation Technology Over 10 Years: The University of Colorado Experience. Orthopedics 2023; 46:e89-e97. [PMID: 35876781 DOI: 10.3928/01477447-20220719-04] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
Intraoperative computed tomography scanning with O-arm and use of Stealth navigation can improve surgical outcomes in a variety of orthopedic subspecialties. In spine surgery, the accuracy, precision, and safety of pedicle screw and interbody implant placement has improved. This technology is now routinely used in percutaneous pedicle screw placement and minimally invasive sacroiliac joint fusion. Other applications include, but are not limited to, isthmic pars defect repair, lumbosacral pseudoarticulation resection in Bertolotti's syndrome, radiofrequency ablation, and en bloc tumor resection. Intraoperative navigation has numerous applications, and use of this technology should continue to evolve as the technology advances. [Orthopedics. 2023;46(2):e89-e97.].
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13
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[Application of navigation in the fractured spine]. OPERATIVE ORTHOPADIE UND TRAUMATOLOGIE 2023; 35:29-36. [PMID: 36441223 DOI: 10.1007/s00064-022-00790-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 10/21/2022] [Indexed: 11/29/2022]
Abstract
OBJECTIVE Computer navigation is used in patients with spine fractures to optimize the accuracy of pedicle screws and thereby reduce intra- and postoperative complications, such as injuries to vessels, nerves and accompanying structures. In addition, the ideal screw length and diameter for each pedicle can be detected to ensure optimal stability. INDICATIONS Intraoperative navigation is suitable for the treatment of spine fractures, which require dorsal stabilization or fusion. It is primarily used for dorsal procedures ranging from the cervical to lumbar/sacral spine. CONTRAINDICATIONS Computer navigation relies on rigid fixation of the dynamic reference base (DRB) at the spinous process. Failure of DRB fixation is the major contraindication for navigation in the spine. SURGICAL TECHNIQUE After acquisition of an intraoperative three-dimensional (3D) scan, a digital relation between the anatomy and the 3D scan is established with the navigation system and its infrared camera. Pedicle screws are planned percutaneously with a calibrated pointer. In the next step K‑wires (or screws) are implanted after the pedicles are drilled with a calibrated drill guide. After implantation, an additional 3D scan is performed to verify accurate K‑wire placement. POSTOPERATIVE MANAGEMENT Postoperative management does not differ compared to nonnavigated procedures. RESULTS Intraoperative navigation in combination with modern imaging systems leads to very high accuracy for pedicle screws. Immediate intraoperative control of K‑wires as well as screws and fracture reduction can avoid revision surgery. Image guidance can reduce radiation exposure for the surgical team.
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14
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Conrads N, Grunz JP, Huflage H, Luetkens KS, Feldle P, Grunz K, Köhler S, Westermaier T. Accuracy of pedicle screw placement using neuronavigation based on intraoperative 3D rotational fluoroscopy in the thoracic and lumbar spine. Arch Orthop Trauma Surg 2022; 143:3007-3013. [PMID: 35794344 DOI: 10.1007/s00402-022-04514-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/29/2021] [Accepted: 06/08/2022] [Indexed: 11/29/2022]
Abstract
INTRODUCTION In spinal surgery, precise instrumentation is essential. This study aims to evaluate the accuracy of navigated, O-arm-controlled screw positioning in thoracic and lumbar spine instabilities. MATERIALS AND METHODS Posterior instrumentation procedures between 2010 and 2015 were retrospectively analyzed. Pedicle screws were placed using 3D rotational fluoroscopy and neuronavigation. Accuracy of screw placement was assessed using a 6-grade scoring system. In addition, screw length was analyzed in relation to the vertebral body diameter. Intra- and postoperative revision rates were recorded. RESULTS Thoracic and lumbar spine surgery was performed in 285 patients. Of 1704 pedicle screws, 1621 (95.1%) showed excellent positioning in 3D rotational fluoroscopy imaging. The lateral rim of either pedicle or vertebral body was protruded in 25 (1.5%) and 28 screws (1.6%), while the midline of the vertebral body was crossed in 8 screws (0.5%). Furthermore, 11 screws each (0.6%) fulfilled the criteria of full lateral and medial displacement. The median relative screw length was 92.6%. Intraoperative revision resulted in excellent positioning in 58 of 71 screws. Follow-up surgery due to missed primary malposition had to be performed for two screws in the same patient. Postsurgical symptom relief was reported in 82.1% of patients, whereas neurological deterioration occurred in 8.9% of cases with neurological follow-up. CONCLUSIONS Combination of neuronavigation and 3D rotational fluoroscopy control ensures excellent accuracy in pedicle screw positioning. As misplaced screws can be detected reliably and revised intraoperatively, repeated surgery for screw malposition is rarely required.
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Affiliation(s)
- Nora Conrads
- Department of Diagnostic and Interventional Radiology, University Hospital Würzburg, Oberdürrbacher Straße 6, 97080, Würzburg, Germany.
| | - Jan-Peter Grunz
- Department of Diagnostic and Interventional Radiology, University Hospital Würzburg, Oberdürrbacher Straße 6, 97080, Würzburg, Germany
| | - Henner Huflage
- Department of Diagnostic and Interventional Radiology, University Hospital Würzburg, Oberdürrbacher Straße 6, 97080, Würzburg, Germany
| | - Karsten Sebastian Luetkens
- Department of Diagnostic and Interventional Radiology, University Hospital Würzburg, Oberdürrbacher Straße 6, 97080, Würzburg, Germany
| | - Philipp Feldle
- Department of Diagnostic and Interventional Radiology, University Hospital Würzburg, Oberdürrbacher Straße 6, 97080, Würzburg, Germany
| | - Katharina Grunz
- Department of Orthopedics and Trauma Surgery, Klinikum Würzburg Mitte - Standort Juliusspital, Juliuspromenade 19, 97070, Würzburg, Germany
| | - Stefan Köhler
- Department of Neurosurgery, University Hospital Würzburg, Josef-Schneider-Straße 11, 97080, Würzburg, Germany.,Die Neurochirurgie-Praxis, Eichhornstraße 28, 97070, Würzburg, Germany
| | - Thomas Westermaier
- Department of Neurosurgery, University Hospital Würzburg, Josef-Schneider-Straße 11, 97080, Würzburg, Germany.,Department of Neurosurgery, Helios-Amper-Klinikum Dachau, Krankenhausstraße 15, 85221, Dachau, Germany
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15
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Minimally invasive lateral occipitocervical fixation: case series and technique description. EUROPEAN SPINE JOURNAL : OFFICIAL PUBLICATION OF THE EUROPEAN SPINE SOCIETY, THE EUROPEAN SPINAL DEFORMITY SOCIETY, AND THE EUROPEAN SECTION OF THE CERVICAL SPINE RESEARCH SOCIETY 2022; 31:2714-2722. [PMID: 35771267 DOI: 10.1007/s00586-022-07278-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/23/2021] [Revised: 04/18/2022] [Accepted: 05/27/2022] [Indexed: 10/17/2022]
Abstract
PURPOSE Occipitocervical junction (OCJ) instability is commonly treated with fixation via open posterior approach. The use of intraoperative navigation allows us to perform occipitocervical fixation via minimally invasive approach. We report a series of patients treated with percutaneous occipitocervical fixation, describing the surgical procedure in detail and discussing the technique. METHODS We prospectively enrolled 8 patients affected by OCJ instability secondary to trauma and rheumatoid arthritis. Traumatic patients were preoperatively evaluated with CT scan and MRI scan if needed. Rheumatoid arthritis group was evaluated with both CT and MR. Patients underwent percutaneous occipitocervical fixation with the assist of intraoperative 3D imaging and navigation. All patients were functionally and radiologically evaluated pre-, at 6 weeks, and at 1 year postoperatively. RESULTS Percutaneous occipitocervical fixation was successfully performed in all of the patients. 33 screws were placed. 29 (87.88%) were placed without any pedicle breach. In 3 (9.09%) screws we observed a minor; and in 1 (3.03%) screw we observed a major pedicle breach. We did not have any postoperative complications. CONCLUSIONS Described method of occipitocervical fixation is a minimally invasive method that has a similar outcome to the open technique. It requires the experience in open techniques and the assist of intraoperative 3D imaging and navigation to be performed efficiently.
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16
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Pijpker PAJ, Kuijlen JMA, Tamási K, Oterdoom DLM, Vergeer RA, Rijtema G, Coppes MH, Kraeima J, Groen RJM. The Accuracy of Patient-Specific Spinal Drill Guides Is Non-Inferior to Computer-Assisted Surgery: The Results of a Split-Spine Randomized Controlled Trial. J Pers Med 2022; 12:jpm12071084. [PMID: 35887581 PMCID: PMC9317516 DOI: 10.3390/jpm12071084] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2022] [Revised: 06/22/2022] [Accepted: 06/27/2022] [Indexed: 11/25/2022] Open
Abstract
In recent years, patient-specific spinal drill guides (3DPGs) have gained widespread popularity. Several studies have shown that the accuracy of screw insertion with these guides is superior to that obtained using the freehand insertion technique, but there are no studies that make a comparison with computer-assisted surgery (CAS). The aim of this study was to determine whether the accuracy of insertion of spinal screws using 3DPGs is non-inferior to insertion via CAS. A randomized controlled split-spine study was performed in which 3DPG and CAS were randomly assigned to the left or right sides of the spines of patients undergoing fixation surgery. The 3D measured accuracy of screw insertion was the primary study outcome parameter. Sixty screws inserted in 10 patients who completed the study protocol were used for the non-inferiority analysis. The non-inferiority of 3DPG was demonstrated for entry-point accuracy, as the upper margin of the 95% CI (−1.01 mm−0.49 mm) for the difference between the means did not cross the predetermined non-inferiority margin of 1 mm (p < 0.05). We also demonstrated non-inferiority of 3D angular accuracy (p < 0.05), with a 95% CI for the true difference of −2.30°−1.35°, not crossing the predetermined non-inferiority margin of 3° (p < 0.05). The results of this randomized controlled trial (RCT) showed that 3DPGs provide a non-inferior alternative to CAS in terms of screw insertion accuracy and have considerable potential as a navigational technique in spinal fixation.
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Affiliation(s)
- Peter A. J. Pijpker
- Department of Neurosurgery, University Medical Center Groningen, University of Groningen, 9700 RB Groningen, The Netherlands; (J.M.A.K.); (K.T.); (D.L.M.O.); (R.A.V.); (G.R.); (M.H.C.); (R.J.M.G.)
- 3D-Lab, University Medical Center Groningen, University of Groningen, 9700 RB Groningen, The Netherlands;
- Correspondence:
| | - Jos M. A. Kuijlen
- Department of Neurosurgery, University Medical Center Groningen, University of Groningen, 9700 RB Groningen, The Netherlands; (J.M.A.K.); (K.T.); (D.L.M.O.); (R.A.V.); (G.R.); (M.H.C.); (R.J.M.G.)
| | - Katalin Tamási
- Department of Neurosurgery, University Medical Center Groningen, University of Groningen, 9700 RB Groningen, The Netherlands; (J.M.A.K.); (K.T.); (D.L.M.O.); (R.A.V.); (G.R.); (M.H.C.); (R.J.M.G.)
- Department of Epidemiology, University Medical Center Groningen, University of Groningen, 9700 RB Groningen, The Netherlands
| | - D. L. Marinus Oterdoom
- Department of Neurosurgery, University Medical Center Groningen, University of Groningen, 9700 RB Groningen, The Netherlands; (J.M.A.K.); (K.T.); (D.L.M.O.); (R.A.V.); (G.R.); (M.H.C.); (R.J.M.G.)
| | - Rob A. Vergeer
- Department of Neurosurgery, University Medical Center Groningen, University of Groningen, 9700 RB Groningen, The Netherlands; (J.M.A.K.); (K.T.); (D.L.M.O.); (R.A.V.); (G.R.); (M.H.C.); (R.J.M.G.)
| | - Gijs Rijtema
- Department of Neurosurgery, University Medical Center Groningen, University of Groningen, 9700 RB Groningen, The Netherlands; (J.M.A.K.); (K.T.); (D.L.M.O.); (R.A.V.); (G.R.); (M.H.C.); (R.J.M.G.)
| | - Maarten H. Coppes
- Department of Neurosurgery, University Medical Center Groningen, University of Groningen, 9700 RB Groningen, The Netherlands; (J.M.A.K.); (K.T.); (D.L.M.O.); (R.A.V.); (G.R.); (M.H.C.); (R.J.M.G.)
| | - Joep Kraeima
- 3D-Lab, University Medical Center Groningen, University of Groningen, 9700 RB Groningen, The Netherlands;
- Department of Oral and Maxillofacial Surgery, University Medical Center Groningen, University of Groningen, 9700 RB Groningen, The Netherlands
| | - Rob J. M. Groen
- Department of Neurosurgery, University Medical Center Groningen, University of Groningen, 9700 RB Groningen, The Netherlands; (J.M.A.K.); (K.T.); (D.L.M.O.); (R.A.V.); (G.R.); (M.H.C.); (R.J.M.G.)
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17
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Harel R, Anekstein Y, Raichel M, Molina CA, Ruiz-Cardozo MA, Orrú E, Khan M, Mirovsky Y, Smorgick Y. The XVS System During Open Spinal Fixation Procedures in Patients Requiring Pedicle Screw Placement in the Lumbosacral Spine. World Neurosurg 2022; 164:e1226-e1232. [PMID: 35671991 DOI: 10.1016/j.wneu.2022.05.134] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2022] [Revised: 05/30/2022] [Accepted: 05/31/2022] [Indexed: 11/16/2022]
Abstract
OBJECTIVE This pilot study was undertaken to evaluate the safety, performance, and usability of the Xvision-Spine (XVS) System (Augmedics, Arlington Heights, IL) during open spinal fixation procedures in patients requiring pedicle screw placement in the lumbosacral spine. METHODS The XVS System is an augmented reality head-mounted display (HMD) based on a computer navigation system designed to assist surgeons in accurately placing pedicle screws. It uses an HMD-mounted tracking camera to provide optical tracking technology, and provides the surgeon a translucent direct near-eye display of the navigated surgical instrument's location relative to the computed tomographic image. We report the preliminary results of a prospective series of all consecutive patients who underwent augmented reality-assisted pedicle screw placement in the lumbosacral vertebrae at 3 institutions. Clinical accuracy for each pedicle screw was graded with Gertzbein-Robbins scores by 2 independent and blinded neuroradiologists. RESULTS The 19 study participants included 8 men and 11 women with a mean age of 59.13 ± 12.09 and 59.91 ± 12.89 years, respectively. Seventeen procedures were successfully completed via the XVS System. Two procedures were not completed due to technical issues with the system's intraoperative scanner. A total of 86 screws were inserted. The accuracy of the XVS System was 97.7%. CONCLUSIONS The XVS System's performance in accurate placement of pedicle screws in the lumbosacral vertebrae had an overall accuracy of 97.7%. These preliminary results were comparable to the accuracy of other manual computer-assisted navigation systems reported in the literature.
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Affiliation(s)
- Ran Harel
- Department of Neurosurgery and the Spine Unit, Sheba Medical Center, Tel Hashomer, Israel, affiliated to the Sackler Faculty of Medicine, Tel-Aviv University, Tel-Aviv, Israel
| | - Yoram Anekstein
- Department of Orthopedic Surgery and the Spine Unit, Shamir (Assaf Harofeh) Medical Center, Zerifin, Israel, affiliated to the Sackler Faculty of Medicine, Tel-Aviv University, Tel-Aviv, Israel
| | - Michael Raichel
- Department of Orthopedic Surgery and the Spine Unit, Haemek Medical Center, Affula, Israel
| | - Camilo A Molina
- Department of Neurosurgery, Washington University School of Medicine in St Louis, St Louis, Missouri, USA
| | - Miguel A Ruiz-Cardozo
- Department of Neurosurgery, Washington University School of Medicine in St Louis, St Louis, Missouri, USA
| | - Emanuele Orrú
- Department of Neuroradiology, The Johns Hopkins University School of Medicine, Baltimore, Maryland, USA
| | - Majid Khan
- Department of Neurosurgery, Washington University School of Medicine in St Louis, St Louis, Missouri, USA
| | - Yigal Mirovsky
- Department of Orthopedic Surgery and the Spine Unit, Shamir (Assaf Harofeh) Medical Center, Zerifin, Israel, affiliated to the Sackler Faculty of Medicine, Tel-Aviv University, Tel-Aviv, Israel
| | - Yossi Smorgick
- Department of Orthopedic Surgery and the Spine Unit, Shamir (Assaf Harofeh) Medical Center, Zerifin, Israel, affiliated to the Sackler Faculty of Medicine, Tel-Aviv University, Tel-Aviv, Israel.
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18
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Xu DR, Luan LR, Ma XX, Cong ZC, Zhou CL. Comparison of electromagnetic and optical navigation assisted Endo-TLIF in the treatment of lumbar spondylolisthesis. BMC Musculoskelet Disord 2022; 23:522. [PMID: 35650587 PMCID: PMC9158260 DOI: 10.1186/s12891-022-05443-1] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/22/2021] [Accepted: 05/11/2022] [Indexed: 11/10/2022] Open
Abstract
Uniportal full endoscopic posterolateral transforaminal lumbar interbody fusion (Endo-TLIF) with percutaneous pedicle screw fixation is a promising, minimally invasive method for the treatment of lumbar spondylolisthesis. However, repeated radiation exposure from X-rays and the steep learning curve remain to be improved.
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Affiliation(s)
- De-Rong Xu
- Department of Spine Surgery, The Affiliated Hospital of Qingdao University, Qingdao, 266000, Shandong Province, China
| | - Liang-Rui Luan
- Department of Spine Surgery, The Affiliated Hospital of Qingdao University, Qingdao, 266000, Shandong Province, China
| | - Xue-Xiao Ma
- Department of Spine Surgery, The Affiliated Hospital of Qingdao University, Qingdao, 266000, Shandong Province, China
| | - Zhi-Chao Cong
- Hi-Tech Zone Li Min Hospital of Weihai Central Hospital Medical Group, Weihai, Shandong Province, People's Republic of China, 264209.
| | - Chuan-Li Zhou
- Department of Spine Surgery, The Affiliated Hospital of Qingdao University, Qingdao, 266000, Shandong Province, China.
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19
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Zhang K, Chen H, Chen K, Yang P, Yang H, Mao H. O-Arm Navigated Cervical Pedicle Screw Fixation in the Treatment of Lower Cervical Fracture-Dislocation. Orthop Surg 2022; 14:1135-1142. [PMID: 35524652 PMCID: PMC9163967 DOI: 10.1111/os.13227] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/07/2020] [Revised: 01/12/2022] [Accepted: 01/19/2022] [Indexed: 11/28/2022] Open
Abstract
OBJECTIVE To evaluate the safety and efficacy of cervical pedicle screw (CPS) placement with O-arm navigation in the treatment of lower cervical fracture-dislocation. METHODS A retrospective clinical study was performed involving 42 consecutive patients with lower cervical spine fracture-dislocation who underwent CPS fixation surgery with O-arm navigation (CPS group) or received conventional lateral mass screw (LMS) fixation surgery (LMS group) between August 2015 and August 2019. Accuracy of CPS position was evaluated by postoperative CT. The clinical parameters including preoperative and final follow-up Japanese Orthopaedic Association (JOA) score and American Spinal Injury Association (ASIA) Impairment Scale, preoperative Sub-axial Injury Classification (SLIC) score, number of fixation segments, operation time, intraoperative blood loss, injury mechanism, injury location, surgical complications were also assessed between the two groups. RESULTS In LMS group, the preoperative SLIC score was 7.5 ± 0.9, ASIA score improvement was 0.8 ± 0.5, JOA score improvement was 3.0 ± 1.8, mean operation time was 204 ± 89 min, intraoperative blood loss was 311 ± 127 ml. In CPS group, the preoperative SLIC score was 7.3 ± 1.2, ASIA score improvement was 0.9 ± 0.5, JOA score improvement was 3.2 ± 2.4, mean operation time is 241 ± 85 min, intraoperative blood loss is about 327 ± 120 ml. There was no significant difference in terms of above clinical parameters between the two groups (P > 0.05), the fixation segments in CPS group (3.5 ± 1.1) were less than that in LMS group (4.2 ± 0.7) (P = 0.037). The accuracy of CPS insertion was evaluated based on postoperative CT. Of all the 118 CPSs, 83 (70.3%) were defined as Grade 0; 27 (22.9%) as Grade 1; eight (6.8%) as Grade 2; and none as Grade 3. CPS malposition rate in this study was 6.8%. In this study, there was no direct intraoperative or postoperative complication caused by CPS or LMS insertion. All the operations were successfully completed in two groups. One of the patients in LMS group presented cerebrospinal fluid leak caused by bone fragment broken of the dural sac, which led to delayed incision healing. CPS group and LMS group both had two patients who suffered pulmonary infection after surgery. A total of 78.6% of the patients showed evidence of neurologic recovery. Satisfactory reduction was achieved in all cases and maintained throughout the follow-up duration. CONCLUSION In the treatment of lower cervical spine fracture-dislocation, cervical pedicle screw insertion with O-arm navigation is a safe and effective method for posterior fixation.
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Affiliation(s)
- Kai Zhang
- Department of Orthopedic Surgery, The First Affiliated Hospital of Soochow University, Suzhou, China
| | - Hao Chen
- Department of Orthopedic Surgery, Affiliated Hospital of Yangzhou University, Yangzhou, China.,Institute of Translational Medicine, Medical College, Yangzhou University, Yangzhou, China
| | - Kangwu Chen
- Department of Orthopedic Surgery, The First Affiliated Hospital of Soochow University, Suzhou, China
| | - Peng Yang
- Department of Orthopedic Surgery, The First Affiliated Hospital of Soochow University, Suzhou, China
| | - Huilin Yang
- Department of Orthopedic Surgery, The First Affiliated Hospital of Soochow University, Suzhou, China
| | - Haiqing Mao
- Department of Orthopedic Surgery, The First Affiliated Hospital of Soochow University, Suzhou, China
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20
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Sommer F, Kirnaz S, Goldberg JL, McGrath LB, Schmidt F, Gadjradj P, Medary B, Härtl R. Safety and Feasibility of DTRAX Cervical Cages in the Atlantoaxial Joint for C1/2 Stabilization. Oper Neurosurg (Hagerstown) 2022; 22:322-327. [PMID: 35315806 DOI: 10.1227/ons.0000000000000139] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2021] [Accepted: 11/27/2021] [Indexed: 11/19/2022] Open
Abstract
BACKGROUND Pathological changes in the atlantoaxial joint often lead to instability, pain, and neurological deterioration. One treatment option is the surgical stabilization of the atlantoaxial joint. In other areas of the spine, fusion rates have been improved by the introduction of an interbody cage. Our aim was to use cervical interbody spacers, originally designed to augment fusion across subaxial posterior cervical facets, to optimize the conditions for atlantoaxial fusion. OBJECTIVE To evaluate the safety and efficacy of implanting cervical cages in the atlantoaxial joint for C1/2 stabilization. METHODS Our retrospective study evaluated patients who had undergone C1/2 cervical fusions by the Harms/Goel technique. This technique was modified by implanting a titanium cervical interbody spacer into the joint space. Mean overall pain, as measured by a 0 to 10 visual analog scale (VAS) and neurological outcomes were measured preoperatively and postoperatively. In addition, radiological outcomes were collected using follow-up imaging. RESULTS Nine patients were included in this case series. The mean preoperative VAS for overall pain was 5.0 ± 4.0, which changed to a mean VAS of 2.0 ± 3.0 after an average follow-up period of 41.4 ± 20.4 (P = .043). All patients showed a bony fusion in our case series. None of the radiological imaging during follow-up showed screw loosening, hardware breakage, implant migration, or nonunion. CONCLUSION The implantation of cervical titanium cages into the atlantoaxial joint in combination with posterior fixation appears to be a safe and effective method for achieving C1/2 fusion.
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Affiliation(s)
- Fabian Sommer
- Department of Neurological Surgery, New York-Presbyterian Hospital/Weill Cornell Medicine, New York, New York, USA
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Kwon JW, Arreza EO, Suguitan AA, Lee SB, Sung S, Park Y, Ha JW, Kim TH, Moon SH, Lee BH. Medial Pedicle Pivot Point Using Preoperative Computed Tomography Morphometric Measurements for Cervical Pedicle Screw Insertion: A Novel Technique and Case Series. J Clin Med 2022; 11:jcm11020396. [PMID: 35054092 PMCID: PMC8779533 DOI: 10.3390/jcm11020396] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2021] [Revised: 12/29/2021] [Accepted: 01/01/2022] [Indexed: 02/04/2023] Open
Abstract
This study describes a new and safe freehand cervical pedicle screw insertion technique using preoperative computed tomography (CT) morphometric measurements as a guide and a medial pedicle pivot point (MPPP) during the procedure. This study included 271 pedicles at 216 cervical spine levels (mean: 4.75 pedicles per patient). A pedicle diameter (PD) ≥ 3.5 mm was the cut-off for pedicle screw fixation. The presence and grade of perforation were detected using postoperative CT scans, where perforations were graded as follows: 0, no perforation; 1, perforation < 0.875 mm; 2, perforation 0.875-1.75 mm; and 3, perforation > 1.75 mm. The surgical technique involved the use of an MPPP, which was the point at which the lines representing the depth of the lateral mass and total length of the pedicle intersected, deep in the lateral mass. The overall success rate was 96.3% (261/271, Grade 0 or 1 perforations). In total, 54 perforations occurred, among which 44 (81.5%) were Grade 1 and 10 (18.5%) were Grade 2. The most common perforation direction was medial (39/54, 72.2%). The freehand technique for cervical pedicle screw fixation using the MPPP may allow for a safe and accurate procedure in patients with a PD ≥3.5 mm.
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Affiliation(s)
- Ji-Won Kwon
- Department of Orthopedic Surgery, Yonsei University College of Medicine, Seoul 03722, Korea; (J.-W.K.); (E.O.A.); (A.A.S.); (T.H.K.); (S.-H.M.)
| | - Edward O. Arreza
- Department of Orthopedic Surgery, Yonsei University College of Medicine, Seoul 03722, Korea; (J.-W.K.); (E.O.A.); (A.A.S.); (T.H.K.); (S.-H.M.)
| | - Anthony A. Suguitan
- Department of Orthopedic Surgery, Yonsei University College of Medicine, Seoul 03722, Korea; (J.-W.K.); (E.O.A.); (A.A.S.); (T.H.K.); (S.-H.M.)
| | - Soo-Bin Lee
- Department of Orthopedic Surgery, Catholic-Kwandong University, Incheon 22711, Korea;
| | - Sahyun Sung
- Department of Orthopedic Surgery, Ewha Womans University College of Medicine, Seoul 07804, Korea;
| | - Yung Park
- Department of Orthopedic Surgery, National Health Insurance Service Ilsan Hospital, Goyang 10444, Korea; (Y.P.); (J.-W.H.)
| | - Joong-Won Ha
- Department of Orthopedic Surgery, National Health Insurance Service Ilsan Hospital, Goyang 10444, Korea; (Y.P.); (J.-W.H.)
| | - Tae Hyung Kim
- Department of Orthopedic Surgery, Yonsei University College of Medicine, Seoul 03722, Korea; (J.-W.K.); (E.O.A.); (A.A.S.); (T.H.K.); (S.-H.M.)
| | - Seong-Hwan Moon
- Department of Orthopedic Surgery, Yonsei University College of Medicine, Seoul 03722, Korea; (J.-W.K.); (E.O.A.); (A.A.S.); (T.H.K.); (S.-H.M.)
| | - Byung Ho Lee
- Department of Orthopedic Surgery, Yonsei University College of Medicine, Seoul 03722, Korea; (J.-W.K.); (E.O.A.); (A.A.S.); (T.H.K.); (S.-H.M.)
- Correspondence:
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Lee NJ, Boddapati V, Mathew J, Marciano G, Fields M, Buchana IA, Zuckerman SL, Park PJ, Leung E, Lombardi JM, Lehman RA. Does robot-assisted spine surgery for multi-level lumbar fusion achieve better patient-reported outcomes than free-hand techniques? INTERDISCIPLINARY NEUROSURGERY 2021. [DOI: 10.1016/j.inat.2021.101214] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022] Open
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Schmidt FA, Mullally M, Lohmann M, Hiepe P, Kirnaz S, Chidambaram S, Wipplinger C, Härtl R. Elastic Image Fusion Software to Coregister Preoperatively Planned Pedicle Screws With Intraoperative Computed Tomography Data for Image-Guided Spinal Surgery. Int J Spine Surg 2021; 15:295-301. [PMID: 33900987 DOI: 10.14444/8039] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
BACKGROUND For complex spinal cases, especially when robotic guidance is used, preoperative planning of pedicle screws can be helpful. Transfer of these preoperatively planned pedicle screws to intraoperative 3-dimensional imaging is challenging because of changes in anatomic alignment between preoperative supine and intraoperative prone imaging, especially when multiple levels are involved. In the spine, where each individual vertebra is subject to independent movement from adjacent level, rigid image fusion is confined to a single vertebra and can display fusion inaccuracies on adjacent levels. A novel elastic fusion algorithm is introduced to overcome these disadvantages. This study aimed to investigate image registration accuracy of preoperatively planned pedicle screws with an elastic fusion algorithm vs. rigid fusion for intraoperative placement with image-guided surgery. METHODS A total of 12 patients, were selected depending on the availability of a preoperative spinal computed tomography (CT) and an intraoperative AIRO CT scan (BrainLAB AG, Munich, Germany) of the same spinal region. To verify accuracy differences between rigid fusion and elastic fusion 76 bilateral screw trajectories were virtually defined in the preoperative CT image, and they were transferred via either rigid fusion or elastic fusion to the intraoperative CT scan. Accuracy of the transferred screws in the rigid and elastic fusion group was determined by measuring pedicle breaches on the intraoperative CT. RESULTS In the rigid fusion group 1.3% of screws showed a breach of less than 2 mm, 9.2% showed breaches between 2 and 4 mm, and 18.4% of the screws showed an error above 4 mm. The elastic fusion group showed no breaches and provided high accuracy between preoperative and intraoperative screw placement. CONCLUSION Elastic fusion provides high registration accuracy and represents a considerable step towards efficiency and safety in CT-based image-guided surgery. LEVEL OF EVIDENCE 3.
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Affiliation(s)
- Franziska A Schmidt
- Weill Cornell Brain and Spine Center, Department of Neurological Surgery, Weill Cornell Medical College, New York Presbyterian Hospital, New York, New York
| | | | | | | | - Sertac Kirnaz
- Weill Cornell Brain and Spine Center, Department of Neurological Surgery, Weill Cornell Medical College, New York Presbyterian Hospital, New York, New York
| | - Swathi Chidambaram
- Weill Cornell Brain and Spine Center, Department of Neurological Surgery, Weill Cornell Medical College, New York Presbyterian Hospital, New York, New York
| | - Christoph Wipplinger
- Weill Cornell Brain and Spine Center, Department of Neurological Surgery, Weill Cornell Medical College, New York Presbyterian Hospital, New York, New York
| | - Roger Härtl
- Weill Cornell Brain and Spine Center, Department of Neurological Surgery, Weill Cornell Medical College, New York Presbyterian Hospital, New York, New York
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Tu Q, Chen H, Ding HW, Yu GW, Miao QJ, Shen JJ, Huang XH, Tang Y, Xia H, Xu JZ. Three-Dimensional Printing Technology for Surgical Correction of Congenital Scoliosis Caused by Hemivertebrae. World Neurosurg 2021; 149:e969-e981. [PMID: 33508486 DOI: 10.1016/j.wneu.2021.01.063] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2020] [Revised: 01/13/2021] [Accepted: 01/15/2021] [Indexed: 11/15/2022]
Abstract
OBJECTIVE This study aimed to explore the clinical application of three-dimensional (3D) printing technology in the surgical treatment of congenital scoliosis caused by hemivertebrae. METHODS Twenty-four patients (11 in the 3D-printing group and 13 in the conventional group) with scoliosis secondary to a single hemivertebra were retrospectively reviewed. All patients underwent hemivertebrectomy and short-segment fixation. Virtual preoperative planning, operation simulation, and intraoperative application of 3D-printed patient-specific templates were performed in the 3D-printing group. Hemorrhage volume, operation time, transfusion, and complications were noted. Radiographic parameters were evaluated preoperatively, postoperatively, and at final follow-up. RESULTS All patients had different degrees of successfully corrected scoliosis. There was a similar correction of the Cobb angle postoperatively between the 2 groups. The operation time, blood loss, transfusion, time for the insertion of each screw, accuracy of screw placement, and complication rate in the 3D-printing group were significantly superior to those in the control group. No patient experienced major complications. No significant correction loss or instrument dysfunction was observed during follow-up. CONCLUSIONS As a viable and effective auxiliary technology, 3D printing makes it possible for surgery to meet both surgeon-specific and patient-specific requirements. 3D-printed individualized templates allow surgery for the correction of congenital scoliosis to enter a new stage of personalized precision surgery.
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Affiliation(s)
- Qiang Tu
- Department of Orthopaedics, Southwest Hospital, Third Military Medical University, Chongqing, China; Department of Orthopaedics, General Hospital of Southern Theatre Command of PLA, Guangdong, China; Department of Orthopaedics, The First School of Clinical Medicine, Southern Medical University, Guangdong, China
| | - Hu Chen
- Department of Orthopaedics, General Hospital of Southern Theatre Command of PLA, Guangdong, China; Department of Orthopaedics, The First School of Clinical Medicine, Southern Medical University, Guangdong, China
| | - Huan-Wen Ding
- South China University of Technology School of Medicine, Guangdong, China; Department of Orthopaedics, Guangzhou No.1 People's Hospital, Guangzhou, China
| | - Guang-Wen Yu
- Department of Sports Medicine, Guangzhou Orthopaedic Hospital, Guangdong, China
| | - Qiu-Ju Miao
- South China University of Technology School of Medicine, Guangdong, China
| | - Jian-Jian Shen
- Department of Spinal Surgery, Guangdong Provincial Hospital of Integrated Traditional Chinese and Western Medicine, Guangdong, China
| | - Xian-Hua Huang
- Department of Orthopaedics, General Hospital of Southern Theatre Command of PLA, Guangdong, China
| | - Yong Tang
- Department of Orthopaedics, Southwest Hospital, Third Military Medical University, Chongqing, China
| | - Hong Xia
- Department of Orthopaedics, General Hospital of Southern Theatre Command of PLA, Guangdong, China
| | - Jian-Zhong Xu
- Department of Orthopaedics, Southwest Hospital, Third Military Medical University, Chongqing, China.
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Losch MS, Swamy A, Elmi-Terander A, Edström E, Hendriks BHW, Dankelman J. Proton density fat fraction of the spinal column: an MRI cadaver study. Biomed Eng Online 2021; 20:7. [PMID: 33413458 PMCID: PMC7792224 DOI: 10.1186/s12938-020-00846-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/15/2020] [Accepted: 12/28/2020] [Indexed: 11/25/2022] Open
Abstract
BACKGROUND The increased popularity of minimally invasive spinal surgery calls for a revision of guidance techniques to prevent injuries of nearby neural and vascular structures. Lipid content has previously been proposed as a distinguishing criterion for different bone tissues to provide guidance along the interface of cancellous and cortical bone. This study aims to investigate how fat is distributed throughout the spinal column to confirm or refute the suitability of lipid content for guidance purposes. RESULTS Proton density fat fraction (PDFF) was assessed over all vertebral levels for six human cadavers between 53 and 92 years of age, based on fat and water MR images. According to their distance to the vertebra contour, the data points were grouped in five regions of interest (ROIs): cortical bone (-1 mm to 0 mm), pre-cortical zone (PCZ) 1-3 (0-1 mm; 1-2 mm; 2-3 mm), and cancellous bone ([Formula: see text] 3 mm). For PCZ1 vs. PCZ2, a significant difference in mean PDFF of between -7.59 pp and -4.39 pp on average was found. For cortical bone vs. PCZ1, a significant difference in mean PDFF of between -27.09 pp and -18.96 pp on average was found. CONCLUSION A relationship between distance from the cortical bone boundary and lipid content could be established, paving the way for guidance techniques based on fat fraction detection for spinal surgery.
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Affiliation(s)
- Merle S. Losch
- Department of Biomechanical Engineering, Delft University of Technology, Delft, The Netherlands
| | - Akash Swamy
- Department of Biomechanical Engineering, Delft University of Technology, Delft, The Netherlands
- Department of In-Body Systems, Philips Research, Royal Philips, NV Eindhoven, The Netherlands
| | - Adrian Elmi-Terander
- Department of Clinical Neuroscience, Karolinska Institutet, Stockholm, Sweden
- Department of Neurosurgery, Karolinska University Hospital, Stockholm, Sweden
| | - Erik Edström
- Department of Clinical Neuroscience, Karolinska Institutet, Stockholm, Sweden
- Department of Neurosurgery, Karolinska University Hospital, Stockholm, Sweden
| | - Benno H. W. Hendriks
- Department of Biomechanical Engineering, Delft University of Technology, Delft, The Netherlands
- Department of In-Body Systems, Philips Research, Royal Philips, NV Eindhoven, The Netherlands
| | - Jenny Dankelman
- Department of Biomechanical Engineering, Delft University of Technology, Delft, The Netherlands
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Rawicki N, Dowdell JE, Sandhu HS. Current state of navigation in spine surgery. ANNALS OF TRANSLATIONAL MEDICINE 2021; 9:85. [PMID: 33553378 PMCID: PMC7859779 DOI: 10.21037/atm-20-1335] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
The use of navigation has become more prevalent in spine surgery. The multitude of available platforms, as well as increased availability of navigation systems, have led to increased use worldwide. Specific subsets of spine surgeons have incorporated this new technology in their practices, including minimally invasive spine (MIS) spine surgeons, neurosurgeons, and high-volume surgeons. Improved accuracy with the use of navigation has been demonstrated and its use has proven to be a safe alternative to fluoroscopic guided procedures. Navigation use allows the limitation of radiation exposure to the surgeon during common spine procedures, which over the course of a surgeon's lifetime may offer significant health benefits. Navigation has also been beneficial in tumor resection and MIS surgery, where traditional anatomic landmarks are missing or in the case of MIS not visible. As cost effectiveness improves, the use of navigation is likely to continue to expand. Navigation will also continue to expand with further innovation such as coupling the use of navigation with robotics and improving tools to enhance the end user experience.
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Affiliation(s)
- Nathaniel Rawicki
- Department of Orthopedics, Westchester Medical Center, Valhalla, NY, USA
| | - James E Dowdell
- Department of Spine, Hospital for Special Surgery, New York, NY, USA
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Yuk FJ, Maragkos GA, Sato K, Steinberger J. Current innovation in virtual and augmented reality in spine surgery. ANNALS OF TRANSLATIONAL MEDICINE 2021; 9:94. [PMID: 33553387 PMCID: PMC7859743 DOI: 10.21037/atm-20-1132] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
In spinal surgery, outcomes are directly related both to patient and procedure selection, as well as the accuracy and precision of instrumentation placed. Poorly placed instrumentation can lead to spinal cord, nerve root or vascular injury. Traditionally, spine surgery was performed by open methods and placement of instrumentation under direct visualization. However, minimally invasive surgery (MIS) has seen substantial advances in spine, with an ever-increasing range of indications and procedures. For these reasons, novel methods to visualize anatomy and precisely guide surgery, such as intraoperative navigation, are extremely useful in this field. In this review, we present the recent advances and innovations utilizing simulation methods in spine surgery. The application of these techniques is still relatively new, however quickly being integrated in and outside the operating room. These include virtual reality (VR) (where the entire simulation is virtual), mixed reality (MR) (a combination of virtual and physical components), and augmented reality (AR) (the superimposition of a virtual component onto physical reality). VR and MR have primarily found applications in a teaching and preparatory role, while AR is mainly applied in hands-on surgical settings. The present review attempts to provide an overview of the latest advances and applications of these methods in the neurosurgical spine setting.
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Affiliation(s)
- Frank J Yuk
- Department of Neurosurgery, Mount Sinai Hospital, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Georgios A Maragkos
- Department of Neurosurgery, Mount Sinai Hospital, Icahn School of Medicine at Mount Sinai, New York, NY, USA
| | - Kosuke Sato
- Hospital for Special Surgery, New York, NY, USA
| | - Jeremy Steinberger
- Department of Neurosurgery, Mount Sinai Hospital, Icahn School of Medicine at Mount Sinai, New York, NY, USA
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De la Garza Ramos R, Echt M, Benton JA, Gelfand Y, Longo M, Yanamadala V, Yassari R. Accuracy of Freehand versus Navigated Thoracolumbar Pedicle Screw Placement in Patients with Metastatic Tumors of the Spine. J Korean Neurosurg Soc 2020; 63:777-783. [PMID: 33181866 PMCID: PMC7671770 DOI: 10.3340/jkns.2020.0001] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2019] [Accepted: 03/25/2020] [Indexed: 11/27/2022] Open
Abstract
Objective To compare the accuracy and breach rates of freehand (FH) versus navigated (NV) pedicle screws in the thoracic and lumbar spine in patients with metastatic spinal tumors.
Methods A retrospective review of adult patients who underwent pedicle screw fixation in the thoracic or lumbar spine for metastatic spinal tumors between 2012 and 2018 was conducted. Breaches were assessed based on the Gertzbein and Robbins classification and only screws placed >4 mm outside of the pedicle wall (lateral or medial) were considered breached.
Results A total of 62 patients received 547 pedicle screws (average 8 per patient) – 34 patients received 298 pedicle screws in the FH group and 28 patients received 249 screws in the NV group. There were 40/547 breaches, corresponding to a breach and accuracy rate of 7.3% and 92.7%, respectively. The breach rate was 9.7% in the FH group and 4.4% in the NV group (chi-squared test, p=0.017); this corresponded to an accuracy rate of 90.3% and 95.6%, respectively. Only one patient from the overall cohort (in the FH group) required revision surgery due to a medial breach abutting the spinal cord (1.6% of all patients; 2.9% of FH patients); no patient suffered organ, vessel, or neurological injury from screw breaches.
Conclusion Navigated pedicle screw placement in patients with metastatic spinal tumors has a significantly higher radiographic accuracy compared to the FH technique. However, the revision surgery was low and no patient suffered from clinically-relevant breach. Navigation also offers the advantage of real-time localization of spinal tumors and aids in targeting and resection of these lesions.
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Affiliation(s)
- Rafael De la Garza Ramos
- Spine Research Group, Montefiore Medical Center/Albert Einstein College of Medicine, Bronx, NY, USA.,Department of Neurological Surgery, Montefiore Medical Center/Albert Einstein College of Medicine, Bronx, NY, USA
| | - Murray Echt
- Spine Research Group, Montefiore Medical Center/Albert Einstein College of Medicine, Bronx, NY, USA.,Department of Neurological Surgery, Montefiore Medical Center/Albert Einstein College of Medicine, Bronx, NY, USA
| | - Joshua A Benton
- Spine Research Group, Montefiore Medical Center/Albert Einstein College of Medicine, Bronx, NY, USA
| | - Yaroslav Gelfand
- Spine Research Group, Montefiore Medical Center/Albert Einstein College of Medicine, Bronx, NY, USA.,Department of Neurological Surgery, Montefiore Medical Center/Albert Einstein College of Medicine, Bronx, NY, USA
| | - Michael Longo
- Spine Research Group, Montefiore Medical Center/Albert Einstein College of Medicine, Bronx, NY, USA
| | - Vijay Yanamadala
- Spine Research Group, Montefiore Medical Center/Albert Einstein College of Medicine, Bronx, NY, USA.,Department of Neurological Surgery, Montefiore Medical Center/Albert Einstein College of Medicine, Bronx, NY, USA
| | - Reza Yassari
- Spine Research Group, Montefiore Medical Center/Albert Einstein College of Medicine, Bronx, NY, USA.,Department of Neurological Surgery, Montefiore Medical Center/Albert Einstein College of Medicine, Bronx, NY, USA
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Wang M, Li D, Shang X, Wang J. A review of computer-assisted orthopaedic surgery systems. Int J Med Robot 2020; 16:1-28. [PMID: 32362063 DOI: 10.1002/rcs.2118] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2019] [Revised: 03/07/2020] [Accepted: 04/19/2020] [Indexed: 12/15/2022]
Abstract
BACKGROUND Computer-assisted orthopaedic surgery systems have great potential, but no review has focused on computer-assisted surgery systems for the spine, hip, and knee. METHODS A systematic search was performed in Web of Science and PubMed. We searched the literature on computer-assisted orthopaedic surgery systems from 2008 to the present and focused on three aspects of systems: training, planning, and intraoperative navigation. RESULTS AND DISCUSSION In this review study, we reviewed 34 surgical training systems, 31 surgical planning systems, and 41 surgical navigation systems. The functions and characteristics of the surgical systems were compared and analysed, and the current concerns about and the impact of the surgical systems on doctors and surgery were clarified. CONCLUSION Computer-assisted orthopaedic surgery systems are still in the development stage. Future surgical training systems should include synthetic models with patient anatomy. Surgical planning systems with automatic planning should be developed, and surgical navigation systems with multimodal fusion, robotic assistance and imaging should be developed.
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Affiliation(s)
- Monan Wang
- Mechanical & Power Engineering College , Harbin University of Science and Technology, Harbin, China
| | - Donghui Li
- Mechanical & Power Engineering College , Harbin University of Science and Technology, Harbin, China
| | - Xiping Shang
- Mechanical & Power Engineering College , Harbin University of Science and Technology, Harbin, China
| | - Jian Wang
- Mechanical & Power Engineering College , Harbin University of Science and Technology, Harbin, China
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Liu B, Liu X, Shen X, Wang G, Chen Y. The "slide technique"-a novel free-hand method of subaxial cervical pedicle screw placement. BMC Musculoskelet Disord 2020; 21:399. [PMID: 32576178 PMCID: PMC7313203 DOI: 10.1186/s12891-020-03420-0] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/15/2019] [Accepted: 06/15/2020] [Indexed: 12/30/2022] Open
Abstract
Background Cervical Pedicle Screw (CPS) placement is a challenging work due to the high risk of neurovascular complications. Although there have been several different free-hand or navigation assisted techniques for CPS placement, perforations may occur during screw insertion, especially lateral perforation. The objective of this manuscript is to describe a novel free-hand technique for subaxial CPS placement (C3–C7) and to evaluate if it decreases the chances of perforation. Methods Thirty-two patients undergoing surgery with CPS instrumentation (C3–C7) at our institute between June 2017 and December 2018 were included in this study. All the patients had cervical trauma, and pedicle screw insertion was performed according to the free-hand “slide technique”. The lamina, lateral mass and facet joint of the target area were exposed and the optimal entry point was found on the lateral mass posterior surface. A pedicular probe was then inserted and gently advanced. During the pedicle probe insertion, the cortex of the medial margin of the pedicle acted as a slide to permit the safe insertion of the screw. If the pedicle screw pathway was intact, the screw of the appropriate size was carefully placed. Three-dimensional (3D) CT imaging reconstruction was performed in all the patients after surgery, and screw perforations were graded with the Gertzbein-Robbins classification. Results Thirty-two patients who met the inclusion criteria were included in this study. A total of 257 CPSs (C3–7) were inserted, of which 41 CPSs were in C3, 61 CPSs were in C4, 55 CPSs were in C5, 53 CPSs were in C6, and 47 CPSs were in C7. The diameter and length of CPSs were 3.5 mm and 22–26 mm respectively. According to the Gertzbein-Robbins classification, grade 0, 231 screws; grade 1, 19 screws; and grade 2, 7 screws. No neurovascular complications occurred stemming from malpositioning of pedicle screws. Among perforated screws (26 screws), there were 16 lateral perforations, 5 medical perforations, and 4 inferior perforations. Conclusions The initial usage result shows the “slide technique” is a safe, effective and cost-effective technique for pedicle screw placement in the cervical spine. This is the first report of such a technique, and further studies are needed.
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Affiliation(s)
- Bin Liu
- Department of Spine Surgery, Hunan Provincial People's Hospital (The First Affiliated Hospital of Hunan Normal University), Changsha, Hunan, China
| | - Xiangyang Liu
- Department of Spine Surgery, Hunan Provincial People's Hospital (The First Affiliated Hospital of Hunan Normal University), Changsha, Hunan, China
| | - Xiongjie Shen
- Department of Spine Surgery, Hunan Provincial People's Hospital (The First Affiliated Hospital of Hunan Normal University), Changsha, Hunan, China
| | - Guoping Wang
- Department of Spine Surgery, Hunan Provincial People's Hospital (The First Affiliated Hospital of Hunan Normal University), Changsha, Hunan, China
| | - Yixin Chen
- Department of Rehabilitation, Xiangya Hospital of Central South University, Changsha, Hunan, China.
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GOSENDE FERNANDOMAGALHÃES, RESENDE ROGÉRIOLÚCIOCHAVESDE, LOPES JUNIOR CARLOSBAUERNAMEM, LEAL JEFFERSONSOARES, SANTANA PAULASILVEIRA, FARIA ÂNGELORIBEIROVAZDE, FRANÇA LUIZCLAUDIODEMOURA. MORPHOMETRY OF THE POSITIONING OF CORTICAL TRAJECTORY PEDICLE SCREWS IN BRAZILIANS. COLUNA/COLUMNA 2020. [DOI: 10.1590/s1808-185120201902223974] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Abstract
ABSTRACT Objective Morphometric study of the positioning of the cortical trajectory pedicle screw in the lumbar spine of Brazilian patients of different sexes and ages, through the use of computed tomography images, in order to obtain more reliable data about cortical screw insertion and the variations observed, providing assistance for a safer, more effective approach with fewer complications. Methods Selection of 100 patients from a database, alternating by sex, measuring the length, diameter, cephalic angulation, and lateral angulation of the vertebrae from L1 to L5. Results Statistically significant measurements were obtained for the four different parameters in relation to sex. The mean age was 56, with a minimum of 20 and a maximum of 87 years. The L4 and L5 screws showed a reduction in relation to the other levels, while the width showed a progressive increase starting at L3. Lateral angulation was the parameter with the least variation among the levels, while there was greater variation and a reduction from L4 to L5 in cephalic angulation. Conclusion Statistically significant results were obtained for length, diameter, lateral and cephalic angulation. Sex was a significant factor in spine surgery instrumentation using the cortical trajectory pedicle screw technique. Level of evidence I; Diagnostic study (investigation of an examination for diagnosis).
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El Saman A, Meier SL, Marzi I. A minimally invasive, 3D-fluoroscopy-navigation-guided, 3D-controlled pedicle approach in spine surgery: first reliable results and impact on patient safety. Eur J Trauma Emerg Surg 2020; 47:739-748. [PMID: 32123950 PMCID: PMC8187224 DOI: 10.1007/s00068-020-01332-1] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2019] [Accepted: 02/15/2020] [Indexed: 11/25/2022]
Abstract
PURPOSE Safe pedicle screw placement is a daily challenge to every spine surgeon. Introduction of minimally invasive approaches in spinal surgery led to an impaired facility of inspection of the surgical field increasing the importance of intraoperative imaging and navigation. During the past years, we established a minimally invasive, navigated approach in our clinical setting. METHODS We retrospectively reviewed the accuracy of pedicle approaches in patients treated due to traumatic or osteoporotic fractures, spondylitis/discitis, and tumoral lesions. Guide wires for pedicle screws or kyphoplasty cannulas were inserted in a 3D-navigation-guided, minimally invasive technique. Positioning of the guide wires was verified via 3D-scan, and pedicle screws/kyphoplasty cannulas were then visualized via a.p./lateral radiographs. Accuracy data were compared to a standard navigated open approach control group with indications similar to the MIS-group. RESULTS 23 MIS patients were included in this study (25-84 years, mean 70 years) with a total of 154 placed guide wires. Handling of the navigated Jamshidi needle was easy and secure. The guide wires showed correct placement in 151/154 cases. Three wires (1.9%) needed correction of placement after control scan. There were no vascular or neurologic complications due to wire misplacement. In the open-surgery control group, 7/181 screws (3.9%) needed intraoperative correction presenting no significant difference compared to the correction rate of the MIS-group (p = 0.35). CONCLUSION Our study shows the feasibility and reliability of a navigation-guided, minimally invasive pedicle approach in the clinical setting. Therefore, reduced morbidity due to minimized approaches can be combined with higher accuracy of navigated pedicle screw/kyphoplasty cannula placement improving patient safety.
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Affiliation(s)
- André El Saman
- Department of Trauma, Hand and Reconstructive Surgery, University Hospital Frankfurt, Theodor-Stern-Kai 7, 60590, Frankfurt am Main, Germany.
| | - Simon Lars Meier
- Department of Trauma, Hand and Reconstructive Surgery, University Hospital Frankfurt, Theodor-Stern-Kai 7, 60590, Frankfurt am Main, Germany
| | - Ingo Marzi
- Department of Trauma, Hand and Reconstructive Surgery, University Hospital Frankfurt, Theodor-Stern-Kai 7, 60590, Frankfurt am Main, Germany
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Accuracy of K-Wireless Insertion of Percutaneous Pedicle Screws Using Computer-Assisted Spinal Navigation: A Systematic Review and Single-Center Experience. World Neurosurg 2020; 138:e267-e274. [PMID: 32105880 DOI: 10.1016/j.wneu.2020.02.079] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/17/2019] [Revised: 02/13/2020] [Accepted: 02/14/2020] [Indexed: 11/22/2022]
Abstract
OBJECTIVE This study sought to 1) describe the use K-wireless pedicle screw insertion among adults (age ≥18 years) undergoing a minimally invasive fusion and 2) perform a systematic review (SR) of all studies that describe a navigated, K-wireless technique with 3-dimensional fluoroscopy. METHODS Patients undergoing a minimally invasive fusion requiring pedicle screw fixation for any indication were prospectively enrolled in the observational component of this study. An assessment of pedicle breach was performed independently and in duplicate based on a modification of the Belmont grading scale. Articles for the SR were identified from a structured search of Medline from inception to May 8, 2019, without restriction of language. RESULTS A total of 82 pedicle screws were placed in 20 patients who underwent surgery between January and June 2014. There was no significant difference in mean operative time between the cases included in this study and a matched cohort of 20 patients undergoing surgery with 2-dimensional fluoroscopy and K-wire-assisted pedicle screw placement (95 ± 13 vs. 87 ± 20 minutes, respectively; P > 0.05). There were 2 major pedicle breaches (Belmont grade 3) in a single patient, yielding a major breach rate of 2.44%. A total of 6 papers that described the placement of 700 pedicle screws in 160 patients between May 2011 and March 2017 were included in the SR. The overall breach rate was 7.00% (n = 37). CONCLUSIONS Percutaneous pedicle screws can be placed accurately and safely using 3-dimensional navigation without the use of K-wires and may confer benefits to patients and clinicians by reducing K-wire-associated complications and radiation exposure.
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Mini Screws for Improving Accuracy in Navigation-assisted Spine Surgery. Clin Spine Surg 2019; 32:417-422. [PMID: 30024445 DOI: 10.1097/bsd.0000000000000685] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
STUDY DESIGN Presentation of a surgical technique with accompanying video (Supplemental Digital Content 1, http://links.lww.com/CLINSPINE/A67) of an illustrative case. OBJECTIVE The objective of this study was to present a helpful and easy-to-implement technique for improving initial referencing accuracy, as well as rereferencing accuracy in cases of multilevel instrumentation or in cases of dislocation of the reference array. SUMMARY OF BACKGROUND DATA Navigation-assisted spine surgery has become standard of care in most hospitals performing complex spine interventions. Although short-segment instrumentations are fairly straight-forward with current hardware and software solutions, obtaining ideal accuracies and troubleshooting reference array disruptions remain challenging. METHODS A surgical technique is presented as a step-by-step guide using intraoperative videos and photographs as well as imaging data in an illustrative case of thoracic hemivertebra resection and dorsal instrumentation. TECHNIQUE/RESULTS After skin incision is performed at the index level, posterior soft tissue preparation is performed. Before firmly attaching the reference array to a spinous process we then insert a minimum of four 5 mm mini screws at any bony structure within the exposure. Then an intraoperative navigation scan (3-dimensional computed tomography or x-ray) is obtained, and initial referencing is performed using the previously inserted mini screws as landmarks. This yields mean accuracies of 1 mm or lower and is easily verifiable by placing the navigation probe on a mini screw head. This action can be swiftly repeated at any time to prevent reduced accuracy because of insertion forces applied during pedicle screw placement. In addition, this allows for easy rereferencing in cases of disruption or complete removal of the navigation array, eliminating the need to perform additional computed tomography or x-ray scans during the procedure. CONCLUSIONS The technique presented allows for rapid and highly accurate initial referencing and can be used in all cases of navigation-assisted spine surgery. It also allows for hassle-free rereferencing in cases of disruption or accidental removal of the reference array.
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Abstract
Adult spinal deformity is a major contributor to pain and disability. It is a degenerative disease with a rigid spine. Spinopelvic parameters have been identified that outline goals of operative intervention, as they have shown to significantly improve patient outcomes. Previously, this was accomplished with large, open fusions. Unfortunately, the adult spinal deformity population is often elderly with significant comorbidities. These extensive fusions have a high rate of morbidity and mortality. Technological advances have allowed minimally invasive approaches to be developed. These techniques have decreased operative morbidity without increasing health care spending.
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Affiliation(s)
- David J Mazur-Hart
- Department of Neurological Surgery, Oregon Health & Science University, Center for Health & Healing, CH8N, 3303 Southwest Bond Avenue, Portland, OR 97239, USA
| | - Khoi D Than
- Department of Neurological Surgery, Oregon Health & Science University, Center for Health & Healing, CH8N, 3303 Southwest Bond Avenue, Portland, OR 97239, USA.
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Cortical Bone Trajectory Screw Placement Accuracy with a Patient-Matched 3-Dimensional Printed Guide in Lumbar Spinal Surgery: A Clinical Study. World Neurosurg 2019; 130:e98-e104. [DOI: 10.1016/j.wneu.2019.05.241] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2019] [Revised: 05/15/2019] [Accepted: 05/16/2019] [Indexed: 12/17/2022]
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Guha D, Jakubovic R, Leung MK, Ginsberg HJ, Fehlings MG, Mainprize TG, Yee A, Yang VXD. Quantification of computational geometric congruence in surface-based registration for spinal intra-operative three-dimensional navigation. PLoS One 2019; 14:e0207137. [PMID: 31450234 PMCID: PMC6710030 DOI: 10.1371/journal.pone.0207137] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/12/2018] [Accepted: 10/25/2018] [Indexed: 11/18/2022] Open
Abstract
BACKGROUND CONTEXT Computer-assisted navigation (CAN) may guide spinal instrumentation, and requires alignment of patient anatomy to imaging. Iterative closest-point (ICP) algorithms register anatomical and imaging surface datasets, which may fail in the presence of geometric symmetry (congruence), leading to failed registration or inaccurate navigation. Here we computationally quantify geometric congruence in posterior spinal exposures, and identify predictors of potential navigation inaccuracy. METHODS Midline posterior exposures were performed from C1-S1 in four human cadavers. An optically-based CAN generated surface maps of the posterior elements at each level. Maps were reconstructed to include bilateral hemilamina, or unilateral hemilamina with/without the base of the spinous process. Maps were fitted to symmetrical geometries (cylindrical/spherical/planar) using computational modelling, and the degree of model fit quantified based on the ratio of model inliers to total points. Geometric congruence was subsequently assessed clinically in 11 patients undergoing midline exposures in the cervical/thoracic/lumbar spine for posterior instrumented fusion. RESULTS In cadaveric testing, increased cylindrical/spherical/planar symmetry was seen in the high-cervical and subaxial cervical spine relative to the thoracolumbar spine (p<0.001). Extension of unilateral exposures to include the ipsilateral base of the spinous process decreased symmetry independent of spinal level (p<0.001). In clinical testing, increased cylindrical/spherical/planar symmetry was seen in the subaxial cervical relative to the thoracolumbar spine (p<0.001), and in the thoracic relative to the lumbar spine (p<0.001). Symmetry in unilateral exposures was decreased by 20% with inclusion of the ipsilateral base of the spinous process. CONCLUSIONS Geometric congruence is most evident at C1 and the subaxial cervical spine, warranting greater vigilance in navigation accuracy verification. At all levels, inclusion of the base of the spinous process in unilateral registration decreases the likelihood of geometric symmetry and navigation error. This work is important to allow the extension of line-of-sight based registration techniques to minimally-invasive unilateral approaches.
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Affiliation(s)
- Daipayan Guha
- Division of Neurosurgery, Department of Surgery, University of Toronto, Toronto, Ontario, Canada
- Institute of Medical Science, University of Toronto, Toronto, Ontario, Canada
- Biophotonics and Bioengineering Laboratory, Sunnybrook Health Sciences Centre, Toronto, Ontario, Canada
| | - Raphael Jakubovic
- Biophotonics and Bioengineering Laboratory, Sunnybrook Health Sciences Centre, Toronto, Ontario, Canada
- Department of Biomedical Physics, Ryerson University, Toronto, Ontario, Canada
| | - Michael K. Leung
- Biophotonics and Bioengineering Laboratory, Sunnybrook Health Sciences Centre, Toronto, Ontario, Canada
| | - Howard J. Ginsberg
- Division of Neurosurgery, Department of Surgery, University of Toronto, Toronto, Ontario, Canada
- Institute of Biomaterials and Biomedical Engineering, University of Toronto, Toronto, Ontario, Canada
| | - Michael G. Fehlings
- Division of Neurosurgery, Department of Surgery, University of Toronto, Toronto, Ontario, Canada
- Institute of Medical Science, University of Toronto, Toronto, Ontario, Canada
| | - Todd G. Mainprize
- Division of Neurosurgery, Department of Surgery, University of Toronto, Toronto, Ontario, Canada
| | - Albert Yee
- Division of Orthopedic Surgery, Department of Surgery, University of Toronto, Toronto, Ontario, Canada
| | - Victor X. D. Yang
- Division of Neurosurgery, Department of Surgery, University of Toronto, Toronto, Ontario, Canada
- Institute of Medical Science, University of Toronto, Toronto, Ontario, Canada
- Biophotonics and Bioengineering Laboratory, Sunnybrook Health Sciences Centre, Toronto, Ontario, Canada
- Department of Biomedical Physics, Ryerson University, Toronto, Ontario, Canada
- Department of Electrical and Computer Engineering, Ryerson University, Toronto, Ontario, Canada
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Siccoli A, Klukowska AM, Schröder ML, Staartjes VE. A Systematic Review and Meta-Analysis of Perioperative Parameters in Robot-Guided, Navigated, and Freehand Thoracolumbar Pedicle Screw Instrumentation. World Neurosurg 2019; 127:576-587.e5. [DOI: 10.1016/j.wneu.2019.03.196] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2018] [Revised: 03/18/2019] [Accepted: 03/19/2019] [Indexed: 12/21/2022]
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Molina CA, Theodore N, Ahmed AK, Westbroek EM, Mirovsky Y, Harel R, Orru' E, Khan M, Witham T, Sciubba DM. Augmented reality-assisted pedicle screw insertion: a cadaveric proof-of-concept study. J Neurosurg Spine 2019; 31:139-146. [PMID: 30925479 DOI: 10.3171/2018.12.spine181142] [Citation(s) in RCA: 69] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2018] [Accepted: 12/21/2018] [Indexed: 02/01/2023]
Abstract
OBJECTIVE Augmented reality (AR) is a novel technology that has the potential to increase the technical feasibility, accuracy, and safety of conventional manual and robotic computer-navigated pedicle insertion methods. Visual data are directly projected to the operator's retina and overlaid onto the surgical field, thereby removing the requirement to shift attention to a remote display. The objective of this study was to assess the comparative accuracy of AR-assisted pedicle screw insertion in comparison to conventional pedicle screw insertion methods. METHODS Five cadaveric male torsos were instrumented bilaterally from T6 to L5 for a total of 120 inserted pedicle screws. Postprocedural CT scans were obtained, and screw insertion accuracy was graded by 2 independent neuroradiologists using both the Gertzbein scale (GS) and a combination of that scale and the Heary classification, referred to in this paper as the Heary-Gertzbein scale (HGS). Non-inferiority analysis was performed, comparing the accuracy to freehand, manual computer-navigated, and robotics-assisted computer-navigated insertion accuracy rates reported in the literature. User experience analysis was conducted via a user experience questionnaire filled out by operators after the procedures. RESULTS The overall screw placement accuracy achieved with the AR system was 96.7% based on the HGS and 94.6% based on the GS. Insertion accuracy was non-inferior to accuracy reported for manual computer-navigated pedicle insertion based on both the GS and the HGS scores. When compared to accuracy reported for robotics-assisted computer-navigated insertion, accuracy achieved with the AR system was found to be non-inferior when assessed with the GS, but superior when assessed with the HGS. Last, accuracy results achieved with the AR system were found to be superior to results obtained with freehand insertion based on both the HGS and the GS scores. Accuracy results were not found to be inferior in any comparison. User experience analysis yielded "excellent" usability classification. CONCLUSIONS AR-assisted pedicle screw insertion is a technically feasible and accurate insertion method.
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Affiliation(s)
| | | | | | | | - Yigal Mirovsky
- 2Department of Orthopaedic Surgery, Assaf Harofeh Medical Center, Zefirin; and
| | - Ran Harel
- 3Department of Neurosurgery, Sheba Medical Center, affiliated to Sackler Medical School, Tel Aviv University, Tel Aviv, Israel
| | - Emanuele Orru'
- 4Neuroradiology, The Johns Hopkins University School of Medicine, Baltimore, Maryland
| | - Majid Khan
- 4Neuroradiology, The Johns Hopkins University School of Medicine, Baltimore, Maryland
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Kayacı S, Cakir T, Dolgun M, Cakir E, Bozok Ş, Temiz C, Caglar YS. Aortic Injury by Thoracic Pedicle Screw. When Is Aortic Repair Required? Literature Review and Three New Cases. World Neurosurg 2019; 128:216-224. [PMID: 31077895 DOI: 10.1016/j.wneu.2019.04.173] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2019] [Revised: 04/19/2019] [Accepted: 04/20/2019] [Indexed: 10/26/2022]
Abstract
PURPOSE Aortic injury by pedicle screw is rare but can cause serious complications. It has not been clearly determined when aortic repair is necessary in cases of screw impingement without perforation of the aortic wall. In this article, we review the treatment and clinical course of pedicle screw aortic impingement and attempt to clarify this issue. METHODS Cases of aortic injury during thoracic screw procedures were found using a MEDLINE search and analyzed together with 3 new cases that we present. RESULTS Nineteen cases collected from the literature and 3 new cases were included in the study. In 7 of the cases, aortic impingement by the pedicle screw was detected during postoperative follow-up (day 1) radiologic examinations. In the other cases, time to presentation of aortic impingement ranged between 2 weeks and 60 months after fixation. The main indications for thoracic spinal fixation were post-traumatic vertebral fracture and kyphoscoliosis/scoliosis. Repair of the aortic damage ranged from primary repair to stent and tube graft placement by the thoracic endovascular aortic repair method. CONCLUSIONS In cases in which the screw impinges less than 5 mm into the aortic wall, hardware revision without aortic repair may be sufficient if recognized early and there are no sign of aortic leakage in vascular imaging. However, cases with more than 5 mm of screw impingement should undergo aortic repair first, even in the absence of aortic leakage, following by screw revision.
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Affiliation(s)
- Selim Kayacı
- Department of Neurosurgery, Faculty of Medicine, Erzincan University, Erzincan, Turkey.
| | - Tayfun Cakir
- Department of Neurosurgery, Faculty of Medicine, Erzincan University, Erzincan, Turkey
| | - Muge Dolgun
- Department of Neurosurgery, Faculty of Medicine, Erzincan University, Erzincan, Turkey
| | - Ertugrul Cakir
- Department of Neurosurgery, Faculty of Medicine, Karadeniz Technical University, Trabzon, Turkey
| | - Şahin Bozok
- Department of Cardiovascular Surgery, Faculty of Medicine, Usak University, Usak, Turkey
| | - Cüneyt Temiz
- Department of Neurosurgery, Faculty of Medicine, Celal Bayar University, Manisa, Turkey
| | - Yusuf Sukru Caglar
- Department of Neurosurgery, Faculty of Medicine, Ankara University, Ankara, Turkey
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Wen BT, Chen ZQ, Sun CG, Jin KJ, Zhong J, Liu X, Tan L, Yang P, le G, Luo M. Three-dimensional navigation (O-arm) versus fluoroscopy in the treatment of thoracic spinal stenosis with ultrasonic bone curette: A retrospective comparative study. Medicine (Baltimore) 2019; 98:e15647. [PMID: 31096488 PMCID: PMC6531158 DOI: 10.1097/md.0000000000015647] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/06/2018] [Revised: 04/15/2019] [Accepted: 04/17/2019] [Indexed: 11/27/2022] Open
Abstract
Three-dimensional intraoperative navigation (O-arm) has been used for many years in spinal surgeries and has significantly improved its precision and safety. This retrospective study compared the efficacy and safety of spinal cord decompression surgeries performed with O-arm navigation and fluoroscopy. The clinical data of 56 patients with thoracic spinal stenosis treated from March 2015 to April 2017 were retrospectively analyzed. Spinal decompression was performed with O-arm navigation and ultrasonic bone curette in 29 patients, and with ultrasonic bone curette and fluoroscopy in 27 patients. Patients were followed-up at postoperative 1 month, 3 months, and the last clinic visit. The neurologic functions were assessed using the Japanese Orthopaedic Association (JOA) Back Pain Evaluation Questionnaire. The accuracy of screw placement was examined using three-dimensional computed tomography (CT) on postoperative day 5. There was no significant difference in the incidences of intraoperative dural tear, nerve root injury, and spinal cord injury between the two groups. The two groups showed no significant difference in postoperative JOA scores (P > .05). The O-arm navigation group had significantly higher screw placement accuracy than the fluoroscopy group (P < .05). O-arm navigation is superior to fluoroscopy in the treatment of thoracic spinal stenosis with ultrasonic bone curette in terms of screw placement accuracy. However, the two surgical modes have similar rates of intraoperative complications and postoperative neurologic functions.
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Affiliation(s)
- Bing-Tao Wen
- Department of Orthopedics, Peking University International Hospital
| | - Zhong-Qiang Chen
- Department of Orthopedics, Peking University International Hospital
| | - Chui-Guo Sun
- Department of Orthopedics, Peking University Third Hospital, Beijing
| | - Kai-Ji Jin
- Department of Orthopedics, Peking University International Hospital
| | - Jun Zhong
- Department of Orthopedics, Peking University International Hospital
| | - Xin Liu
- Department of Orthopedics, Peking University International Hospital
| | - Lei Tan
- Department of Orthopedics, Peking University International Hospital
| | - Peng Yang
- Department of Orthopedics, Peking University International Hospital
| | - Geri le
- Department of Orthopedics, Peking University International Hospital
| | - Man Luo
- Department of Orthopedics, Guangxi International Zhuang Medicine Hospital, Nanning, Guangxi, China
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Pedicle Screw Placement Using Augmented Reality Surgical Navigation With Intraoperative 3D Imaging: A First In-Human Prospective Cohort Study. Spine (Phila Pa 1976) 2019; 44:517-525. [PMID: 30234816 PMCID: PMC6426349 DOI: 10.1097/brs.0000000000002876] [Citation(s) in RCA: 136] [Impact Index Per Article: 22.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
STUDY DESIGN Prospective observational study. OBJECTIVE The aim of this study was to evaluate the accuracy of pedicle screw placement using augmented reality surgical navigation (ARSN) in a clinical trial. SUMMARY OF BACKGROUND DATA Recent cadaveric studies have shown improved accuracy for pedicle screw placement in the thoracic spine using ARSN with intraoperative 3D imaging, without the need for periprocedural x-ray. In this clinical study, we used the same system to place pedicle screws in the thoracic and lumbosacral spine of 20 patients. METHODS The study was performed in a hybrid operating room with an integrated ARSN system encompassing a surgical table, a motorized flat detector C-arm with intraoperative 2D/3D capabilities, integrated optical cameras for augmented reality navigation, and noninvasive patient motion tracking. Three independent reviewers assessed screw placement accuracy using the Gertzbein grading on 3D scans obtained before wound closure. In addition, the navigation time per screw placement was measured. RESULTS One orthopedic spinal surgeon placed 253 lumbosacral and thoracic pedicle screws on 20 consenting patients scheduled for spinal fixation surgery. An overall accuracy of 94.1% of primarily thoracic pedicle screws was achieved. No screws were deemed severely misplaced (Gertzbein grade 3). Fifteen (5.9%) screws had 2 to 4 mm breach (Gertzbein grade 2), occurring in scoliosis patients only. Thirteen of those 15 screws were larger than the pedicle in which they were placed. Two medial breaches were observed and 13 were lateral. Thirteen of the grade 2 breaches were in the thoracic spine. The average screw placement time was 5.2 ± 4.1 minutes. During the study, no device-related adverse event occurred. CONCLUSION ARSN can be clinically used to place thoracic and lumbosacral pedicle screws with high accuracy and with acceptable navigation time. Consequently, the risk for revision surgery and complications could be minimized. LEVEL OF EVIDENCE 3.
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Utilization of Spinal Intra-operative Three-dimensional Navigation by Canadian Surgeons and Trainees: A Population-based Time Trend Study. Can J Neurol Sci 2019; 46:87-95. [DOI: 10.1017/cjn.2018.376] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
AbstractBackgroundComputer-assisted navigation (CAN) improves the accuracy of spinal instrumentation in vertebral fractures and degenerative spine disease; however, it is not widely adopted because of lack of training, high capital costs, workflow hindrances, and accuracy concerns. We characterize shifts in the use of spinal CAN over time and across disciplines in a single-payer health system, and assess the impact of intra-operative CAN on trainee proficiency across Canada.MethodsA prospectively maintained Ontario database of patients undergoing spinal instrumentation from 2005 to 2014 was reviewed retrospectively. Data were collected on treated pathology, spine region, surgical approach, institution type, and surgeon specialty. Trainee proficiency with CAN was assessed using an electronic questionnaire distributed across 15 Canadian orthopedic surgical and neurosurgical programs.ResultsIn our provincial cohort, 16.8% of instrumented fusions were CAN-guided. Navigation was used more frequently in academic institutions (15.9% vs. 12.3%, p<0.001) and by neurosurgeons than orthopedic surgeons (21.0% vs. 12.4%, p<0.001). Of residents and fellows 34.1% were fully comfortable using spinal CAN, greater for neurosurgical than orthopedic surgical trainees (48.1% vs. 11.8%, p=0.008). The use of CAN increased self-reported proficiency in thoracic instrumentation for all trainees by 11.0% (p=0.036), and in atlantoaxial instrumentation for orthopedic trainees by 18.0% (p=0.014).ConclusionsSpinal CAN is used most frequently by neurosurgeons and in academic centers. Most spine surgical trainees are not fully comfortable with the use of CAN, but report an increase in technical comfort with CAN guidance particularly for thoracic instrumentation. Increased education in spinal CAN for trainees, particularly at the fellowship stage and, specifically, for orthopedic surgery, may improve adoption.
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García-Fantini M, De Casas R. Three-dimensional fluoroscopic navigation versus fluoroscopy-guided placement of pedicle screws in L4-L5-S1 fixation: single-centre experience of pedicular accuracy and S1 cortical fixation of 810 screws. JOURNAL OF SPINE SURGERY 2018; 4:736-743. [PMID: 30714005 DOI: 10.21037/jss.2018.10.03] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
Background Three-dimensional (3D) navigation techniques can theoretically provide higher accuracy rates and increased safety for pedicle screw (PS) placement than traditional fluoroscopy (FL) guided methods. In this study, we compare the pedicular accuracy of 3D isocentric fluoroscopic navigation (3DFL) versus FL guidance in PS L4-L5-S1 fixation and evaluate the differential cortical purchase and safety of fixation of the S1 PS. Methods This is a single-centre retrospective study of 810 PSs placed in open L4-L5-S1 fixation between 2012 and 2017 in 39 patients using standard FL and in 96 patients under 3DFL. Pedicular screw accuracy was determined by postoperative computed tomography (CT) and graded on a 4-tiered classification system according to Gertzbein and Robbins. In addition, sacral screws were evaluated depending on the degree of cortical fixation: monocortical, bicortical or tricortical, and the degree of safety with respect to retroperitoneal structures. Results Grade 0 perfect pedicular screw placement was 95% for 3DFL screws compared to 85% for screws placed under fluoroscopy (P<0.05). The number of grade 0 versus grade 1 and higher (breached screws) was statistically significant (P<0.05). Higher S1 cortical screw accuracy [77% versus 51% (P<0.05)] for bi- and tricortical fixation and a lower percentage of "at risk" PSs (P<0.05) were achieved with placement under 3DFL versus FL. Conclusions 3DFL enhances the accuracy and safety of PS placement in L4-L5-S1 fixation, reducing the rate of misplaced screws and improving S1 cortical fixation.
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Affiliation(s)
- Manuel García-Fantini
- Neurosurgery Department of Hospital HM Modelo, Rúa Virrey Osorio 30, 15011 La Coruña, Spain
| | - Ricardo De Casas
- Orthopaedic Surgery Department of Clínica Traumacor, Ronda de Nelle 72, 15005 La Coruña, Spain
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Sadrameli SS, Jafrani R, Staub BN, Radaideh M, Holman PJ. Minimally Invasive, Stereotactic, Wireless, Percutaneous Pedicle Screw Placement in the Lumbar Spine: Accuracy Rates With 182 Consecutive Screws. Int J Spine Surg 2018; 12:650-658. [PMID: 30619667 PMCID: PMC6314338 DOI: 10.14444/5081] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
BACKGROUND Standard fluoroscopic navigation and stereotactic computed tomography-guided lumbar pedicle screw instrumentation traditionally relied on the placement of Kirshner wires (K-wires) to ensure accurate screw placement. The use of K-wires, however, is associated with a risk of morbidity due to potential ventral displacement into the retroperitoneum. We report our experience using a computer image-guided, wireless method for pedicle screw placement. We hypothesize that minimally invasive, wireless pedicle screw placement is as accurate and safe as the traditional technique using K-wires while decreasing operative time and avoiding potential complications associated with K-wires. METHODS We conducted a retrospective review of 42 consecutive patients who underwent a stereotactic-guided, wireless lumbar pedicle screw placement. All screws were placed to provide fixation to a variety of interbody fusion constructs including anterior lumbar interbody fusion, lateral interbody fusion, and transforaminal lumbar interbody fusion. The procedures were performed using the O-arm intraoperative imaging system with StealthStation navigation (Medtronic, Memphis, TN) and Medtronic navigated instrumentation. After placing a percutaneous navigation frame into the posterior superior iliac spine or onto an adjacent spinous process, an intraoperative O-arm image was obtained to allow subsequent StealthStation navigation. Para-median incisions were selected to allow precise percutaneous access to the target pedicles. The pedicles were cannulated using either a stereotactic drill or a novel awl-tipped tap along with a low-speed/high-torque power driver. The initial trajectory into the pedicle was recorded on the Medtronic StealthStation prior to removal of the drill or awl-tap, creating a "virtual" K-wire rather than inserting an actual K-wire to allow subsequent tapping and screw insertion. Accurate screw placement is achieved by following the virtual path as an exact computer-aided design model of the screw traversing the pedicle is projected onto the display and by using audible and tactile feedback. A second O-arm scan was obtained to confirm accuracy of screw placement. RESULTS A total of 20 women and 22 men (average age = 56 years) underwent a total of 182 pedicle screw placements using the stereotactic, wireless technique. The total breach rate was 9.9%, with a clinically significant breach rate of 0% (defined as >2 mm medial breach or >4 mm lateral breach) and a clinical complication rate of 0%. CONCLUSIONS Wireless, percutaneous placement of lumbar pedicle screws using computed tomography-guided stereotactic navigation is a safe, reproducible technique with very high accuracy rates.
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Affiliation(s)
- Saeed S Sadrameli
- Houston Methodist Neurosurgical Spine Center, Houston Methodist Neurological Institute, Houston, Texas
| | - Ryan Jafrani
- Houston Methodist Neurosurgical Spine Center, Houston Methodist Neurological Institute, Houston, Texas
| | - Blake N Staub
- Houston Methodist Neurosurgical Spine Center, Houston Methodist Neurological Institute, Houston, Texas
| | - Majdi Radaideh
- Houston Methodist Neurosurgical Spine Center, Houston Methodist Neurological Institute, Houston, Texas
| | - Paul J Holman
- Houston Methodist Neurosurgical Spine Center, Houston Methodist Neurological Institute, Houston, Texas
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Buser Z, Chung AS, Abedi A, Wang JC. The future of disc surgery and regeneration. INTERNATIONAL ORTHOPAEDICS 2018; 43:995-1002. [PMID: 30506089 DOI: 10.1007/s00264-018-4254-7] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/10/2018] [Accepted: 11/25/2018] [Indexed: 12/21/2022]
Abstract
Low back and neck pain are among the top contributors for years lived with disability, causing patients to seek substantial non-operative and operative care. Intervertebral disc herniation is one of the most common spinal pathologies leading to low back pain. Patient comorbidities and other risk factors contribute to the onset and magnitude of disc herniation. Spine fusions have been the treatment of choice for disc herniation, due to the conflicting evidence on conservative treatments. However, re-operation and costs have been among the main challenges. Novel technologies including cage surface modifications, biologics, and 3D printing hold a great promise. Artificial disc replacement has demonstrated reduced rates of adjacent segment degeneration, need for additional surgery, and better outcomes. Non-invasive biological approaches are focused on cell-based therapies, with data primarily from preclinical settings. High-quality comparative studies are needed to evaluate the efficacy and safety of novel technologies and biological therapies.
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Affiliation(s)
- Zorica Buser
- Department of Orthopaedic Surgery, University of Southern California, Los Angeles, CA, USA.
- Department of Orthopaedic Surgery, Keck School of Medicine, University of Southern California, 1450 San Pablo St, HC4 - #5400A, Los Angeles, CA, 90033, USA.
| | | | - Aidin Abedi
- Department of Orthopaedic Surgery, University of Southern California, Los Angeles, CA, USA
| | - Jeffrey C Wang
- Department of Orthopaedic Surgery, University of Southern California, Los Angeles, CA, USA
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Zhu M, Liu F, Zhou C, Lin L, Zhang Y, Chai G, Xie L, Qi F, Li Q. Does intraoperative navigation improve the accuracy of mandibular angle osteotomy: Comparison between augmented reality navigation, individualised templates and free-hand techniques. J Plast Reconstr Aesthet Surg 2018; 71:1188-1195. [DOI: 10.1016/j.bjps.2018.03.018] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2017] [Revised: 03/06/2018] [Accepted: 03/30/2018] [Indexed: 01/14/2023]
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Paredes I, Panero I, Cepeda S, CastaÑo-Leon AM, Jimenez-Roldan L, Perez-NuÑez Á, AlÉn JA, Lagares A. Accuracy of percutaneous pedicle screws for thoracic and lumbar spine fractures compared with open technique. J Neurosurg Sci 2018; 65:38-46. [PMID: 29905430 DOI: 10.23736/s0390-5616.18.04439-9] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
BACKGROUND This study aimed to compare the accuracy of screw placement between open pedicle screw fixation and percutaneous pedicle screw fixation (MIS) for the treatment of thoracolumbar spine fractures (TSF). METHODS forty-nine patients with acute TSF who were treated with transpedicular screw fixation from January 2013 to December 2016 were retrospectively reviewed. The patients were divided into Open and MIS groups. Laminectomy was performed in either group if needed. The accuracy of the screw placement, the evolution of the Cobb sagittal angle postoperatively and at 12-month follow-up and the neurological status were recorded. AO type of fracture and TLICS score were also recorded. RESULTS Mean age was 42 years old. Mean TLICS score was 6.29 and 5.96 for open and MIS groups respectively. Twenty-five MIS and 24 open surgeries were performed, and 350 (175 in each group) screws were inserted (7.14 per patient). Twenty-four and 13 screws were considered "out" in the open and MIS groups respectively (Odds ratio 1.98. 0.97-4,03 P=0.056). The Cobb sagittal angle went from 13.3º to 4.5º and from 14.9º to 8.2º in the Open and MIS groups respectively (both P<0.0001). Loss of correction at 12-month follow-up was 3.2º and 4.2º for the open and MIS groups, respectively. No neurological worsening was observed. CONCLUSIONS For the treatment of acute thoracolumbar fractures, the MIS technique seems to achieve similar results to the open technique in relation to neurological improvement and deformity correction, while placing the screws more accurately.
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Affiliation(s)
- Igor Paredes
- Department of Neurosurgery, University Hospital 12 de Octubre, Madrid, Spain -
| | - Irene Panero
- Department of Neurosurgery, University Hospital 12 de Octubre, Madrid, Spain
| | - Santiago Cepeda
- Department of Neurosurgery, Rio Hortega University Hospital, Valladolid, Spain
| | - Ana M CastaÑo-Leon
- Department of Neurosurgery, University Hospital 12 de Octubre, Madrid, Spain
| | - Luis Jimenez-Roldan
- Department of Neurosurgery, University Hospital 12 de Octubre, Madrid, Spain
| | - Ángel Perez-NuÑez
- Department of Neurosurgery, University Hospital 12 de Octubre, Madrid, Spain
| | - Jose A AlÉn
- Department of Neurosurgery, University Hospital 12 de Octubre, Madrid, Spain
| | - Alfonso Lagares
- Department of Neurosurgery, University Hospital 12 de Octubre, Madrid, Spain
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Guha D, Yang VXD. Perspective review on applications of optics in spinal surgery. JOURNAL OF BIOMEDICAL OPTICS 2018; 23:1-8. [PMID: 29893070 DOI: 10.1117/1.jbo.23.6.060601] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/04/2018] [Accepted: 05/23/2018] [Indexed: 06/08/2023]
Abstract
Optical technologies may be applied to multiple facets of spinal surgery from diagnostics to intraoperative image guidance to therapeutics. In diagnostics, the current standard remains cross-sectional static imaging. Optical surface scanning tools may have an important role; however, significant work is required to clearly correlate surface metrics to radiographic and clinically relevant spinal anatomy and alignment. In the realm of intraoperative image guidance, optical tracking is widely developed as the current standard of instrument tracking, however remains compromised by line-of-sight issues and more globally cumbersome registration workflows. Surface scanning registration tools are being refined to address concerns over workflow and learning curves, and allow real-time update of tissue deformation; however, the line-of-sight issues plaguing instrument tracking remain to be addressed. In therapeutics, optical applications exist in both visualization, in the form of endoscopes, and ablation, in the form of lasers. Further work is required to extend the feasibility of laser ablation to multiple tissues, including disc, bone, and tumor, in a safe and time-efficient manner. Finally, we postulate some of the short- and long-term opportunities for future growth of optical techniques in the context of spinal surgery. Particular emphasis is placed on intraoperative image guidance, the area of the authors' primary expertise.
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Affiliation(s)
- Daipayan Guha
- University of Toronto, Division of Neurosurgery, Toronto, Ontario, Canada
| | - Victor X D Yang
- University of Toronto, Division of Neurosurgery, Toronto, Ontario, Canada
- Sunnybrook Health Sciences Centre, Toronto, Ontario, Canada
- Ryerson University, Bioengineering and Biophotonics Laboratory, Toronto, Ontario, Canada
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Shi S, Ying X, Zheng Q, Zhu B, Jin Y, Shen J, Zheng M, Hu S. Application of Cortical Bone Trajectory Screws in Elderly Patients with Lumbar Spinal Tuberculosis. World Neurosurg 2018; 117:e82-e89. [PMID: 29864561 DOI: 10.1016/j.wneu.2018.05.168] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2018] [Revised: 05/21/2018] [Accepted: 05/23/2018] [Indexed: 12/15/2022]
Abstract
OBJECTIVE To investigate the clinical efficacy of cortical bone trajectory (CBT) screws in the treatment of elderly patients with lumbar spinal tuberculosis. METHODS A total of 45 elderly patients with lumbar spinal tuberculosis were allocated to 1 groups based on different surgical methods: 22 patients in group A received posterior CBT screw fixation combined with anterior debridement with a small incision and bone grafting, and 23 patients in group B underwent posterior pedicle screw fixation combined with anterior debridement with a small incision and bone grafting. The intraoperative blood loss, postoperative drainage volumes, Cobb angles, visual analogue scale scores, erythrocyte sedimentation rates (ESRs), and Frankel grades before and after surgery were analyzed. The surgical complications and spinal fusion were also assessed. RESULTS After a 3-month follow-up, 2 patients in group A and 3 patients in group B experienced anterior psoas muscle abscesses, which were cured by a second surgery. The remaining patients were healed by the first surgery. Spinal fusion after bone graft required 3 to 8 months (average, 4.9 months). There were no significant differences in surgery time, blood loss, drainage volume, and hospital stay between the 2 groups. The visual analogue scale scores, Cobb angles, ESRs, and Frankel grades were significantly improved after surgery in both groups. CONCLUSION The CBT screws were not inferior to traditional pedicle screws. The application of CBT- screws fixation combined with anterior debridement with a small incision and bone grafting was an effective and safe method to treat elderly patients with lumbar spinal tuberculosis.
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Affiliation(s)
- Shiyuan Shi
- Department of Orthopedics, Hangzhou Red Cross Hospital, Hangzhou, Zhejiang, China
| | - Xiaozhang Ying
- Department of Orthopedics, Hangzhou Red Cross Hospital, Hangzhou, Zhejiang, China.
| | - Qi Zheng
- Department of Orthopedics, Hangzhou Red Cross Hospital, Hangzhou, Zhejiang, China
| | - Bo Zhu
- Department of Orthopedics, Hangzhou Red Cross Hospital, Hangzhou, Zhejiang, China
| | - Yanghui Jin
- Department of Orthopedics, Hangzhou Red Cross Hospital, Hangzhou, Zhejiang, China
| | - Jian Shen
- Department of Orthopedics, Hangzhou Red Cross Hospital, Hangzhou, Zhejiang, China
| | - Mingfeng Zheng
- Department of Orthopedics, Hangzhou Red Cross Hospital, Hangzhou, Zhejiang, China
| | - Shunping Hu
- Department of Orthopedics, Hangzhou Red Cross Hospital, Hangzhou, Zhejiang, China
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