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Zhao WQ, Yu KQ, Xie RZ, Liang YF, Huang JF. Risk factors for periprosthetic femoral fractures following hip arthroplasty: a systematic review and meta-analysis. Ann Med 2025; 57:2494679. [PMID: 40265296 DOI: 10.1080/07853890.2025.2494679] [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: 11/02/2024] [Revised: 02/25/2025] [Accepted: 04/04/2025] [Indexed: 04/23/2025] Open
Abstract
INTRODUCTION Periprosthetic femoral fracture (PPFF) is a serious complication following hip arthroplasty. The objective of this study was to determine the risk factors for PPFF following hip arthroplasty from existing studies. METHODS A comprehensive systematic search was performed in 4 databases: Pubmed, Embase, Web of Science, and Cochrane Library. The last search was carried out on 26th July 2024. We focused on identifying risk factors for PPFF following hip arthroplasty. Study eligibility required PPFF as an outcome and reporting of associated risk factors. Quality assessment was performed using the Newcastle-Ottawa Scale (NOS), with evidence certainty evaluated via Grading of Recommendations, Assessment, Development, and Evaluations (GRADE). Meta-analyses employed both fixed-effect and random-effects models to pool odds ratios for identified risk factors. RESULTS Out of 1553 articles, 36 studies published between 2006 and 2024 were included. Risk factors associated with increased incidence of PPFF ranges from very Low to High. High-quality evidence supported the use of uncemented stems (Odds Ratio [OR]: 3.36, 95% Confidence Interval [95% CI]: 3.02-3.74), major teaching hospital (OR: 2.04, 95% CI: 1.37-3.05). Moderate-quality evidence: female gender (OR: 1.60, 95% CI: 1.43-1.78), morbid obesity (OR: 1.44, 95% CI: 1.01-2.16), higher Deyo-Charlson index (OR: 1.44, 95% CI: 1.18-1.77), rheumatoid arthritis (OR: 1.89, 95% CI: 1.16-3.06), femoral Dorr type C (OR: 4.23, 95% CI: 2.82-6.33). Low evidence: age > 70 years (OR: 1.67, 95% CI: 1.19-2.34), revision hip arthroplasty (OR: 2.60, 95% CI: 1.59-4.27). BMI > 30 and history of hip surgery are not the risk (very low). Diagonized as osteoarthritis before surgery is a protective factor (OR:0.51, 95%CI: 0.40-0.65, quality = High). CONCLUSION This meta-analysis provided some low-to-high evidence about the risk of PPFF following hip arthroplasty. It's recommended that clinicians consider these risk factors when evaluating patients for hip arthroplasty and take steps to mitigate their impact, like optimizing patients health preoperatively, using cemented stems, and monitoring high-risk patients closely.
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Affiliation(s)
- Wei-Qiang Zhao
- Department of Orthopaedics & Traumatology, The First Affiliated Hospital of Zhejiang Chinese Medical University, Hangzhou, China
- The First Clinical Medical College, Zhejiang Chinese Medical University, Hangzhou, China
| | - Ke-Qin Yu
- The First Clinical Medical College, Zhejiang Chinese Medical University, Hangzhou, China
| | - Rong-Zhen Xie
- Department of Orthopaedics & Traumatology, The First Affiliated Hospital of Zhejiang Chinese Medical University, Hangzhou, China
- The First Clinical Medical College, Zhejiang Chinese Medical University, Hangzhou, China
| | - Yu-Feng Liang
- Department of Orthopaedics & Traumatology, The First Affiliated Hospital of Zhejiang Chinese Medical University, Hangzhou, China
- The First Clinical Medical College, Zhejiang Chinese Medical University, Hangzhou, China
| | - Jie-Feng Huang
- Department of Orthopaedics & Traumatology, The First Affiliated Hospital of Zhejiang Chinese Medical University, Hangzhou, China
- The First Clinical Medical College, Zhejiang Chinese Medical University, Hangzhou, China
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Higgins JDD, Dandamudi S, Forlenza E, Bradley A, Tseng J, Gerlinger T. Isolated Femoral Component Revision Outcomes in the Setting of Acute Periprosthetic Femoral Fractures. J Arthroplasty 2025:S0883-5403(25)00680-1. [PMID: 40513909 DOI: 10.1016/j.arth.2025.06.020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/03/2025] [Revised: 06/04/2025] [Accepted: 06/04/2025] [Indexed: 06/16/2025] Open
Abstract
INTRODUCTION While periprosthetic fracture is not the most common reason for revision of a primary total hip arthroplasty (THA), it represents a common problem in the acute postoperative period. During this time, undergoing revision surgery has been found to have increased risks of complications. The goal of this study was to evaluate the outcome of patients who experience an isolated femoral revision for a periprosthetic fracture acutely after primary THA. METHODS We performed a retrospective chart review of patients from 2004 to 2022 using an institutional database. We included patients who underwent revision THA for a periprosthetic femoral fracture within eight weeks of their primary THA and had at least one year of follow-up. There were 49 patients who met inclusion criteria and had an average follow-up of 5.5 years (range, 1.1 to 19.3). The mean age of the cohort was 67 years (range, 44 to 85), the mean BMI was 31.9 (range, 19.7 to 57.4), 69.4% were women, and the mean American Society of Anesthesiologists (ASA) score was 2.7 ± 0.5. Primary outcome measures were the incidence of postoperative complications and revision surgery. Medical complications, hospital readmissions, and mortality were also evaluated. RESULTS There were 10 patients in the cohort who suffered postoperative complications (20.4%), and nine of those patients (18.4%) underwent additional revision THA surgery. Of those additional revision cases, five patients (10.2%) developed acute periprosthetic joint infections (PJI), and four patients (8.2%) developed signs of additional periprosthetic fracture or evidence of femoral stem subsidence and loosening. There were five mortalities (10.2%) unrelated to surgery in the subsequent years after acute periprosthetic fracture. CONCLUSION Patients undergoing isolated femoral component revision surgery in the setting of acute periprosthetic femoral fractures after primary THA are at high risk of complications and reoperation.
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Affiliation(s)
- John D D Higgins
- Department of Orthopaedic Surgery, Rush University Medical Center, Chicago, IL.
| | | | - Enrico Forlenza
- Department of Orthopaedic Surgery, Rush University Medical Center, Chicago, IL
| | - Alexander Bradley
- Department of Orthopaedic Surgery, Rush University Medical Center, Chicago, IL
| | - Joyee Tseng
- Department of Orthopaedic Surgery, Rush University Medical Center, Chicago, IL
| | - Tad Gerlinger
- Department of Orthopaedic Surgery, Rush University Medical Center, Chicago, IL
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Trentini CA, Balsano MDA, Deeke M, Zaniolo FJ. Periprosthetic Fractures of the Femur during the Operation of Primary Total Hip Arthroplasties. Rev Bras Ortop 2024; 59:e745-e751. [PMID: 39649054 PMCID: PMC11624928 DOI: 10.1055/s-0044-1779320] [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] [Received: 10/24/2022] [Accepted: 08/10/2023] [Indexed: 12/10/2024] Open
Abstract
Objective To determine the incidence of periprosthetic femoral fractures during the operation in primary hip arthroplasties and correlate them with the inherent risk factors associated with patients, implants, and the diagnosis of coxarthrosis and/or femoral neck fractures. Methods Cross-sectional study, with retrospective analysis of medical records and image exams of patients operated between 2014 and 2019. The variables analyzed followed those proposed by the world literature, namely: age, sex, Dorr index, surgical indication, Vancouver classification, location, type of fixation (cemented or non-cemented), implant model used, intraoperative diagnosis, and corresponding treatment approach. All surgeries used the same posterolateral access route and were performed by the same group of surgeons. Results Within the sample of 2,217 arthroplasties (2,154 patients), 12 fractures (0.56%) were identified in 12 patients. The sample consisted of 8 females and 4 males, with an average age of 62.53 years. In all diagnosed cases, protective cerclages were added at the level of the lesser trochanter and/or the greater trochanter, and, in 3 cases, there was a change from uncemented to cemented femoral stems and only 1 required revision. Conclusion Data Analysis Allows Us To State That The Risk Of Intraoperative Periprosthetic Fracture Is Greater In Women And With The Use Of Cementless Stems. The Occurrence Of These In This Study Had A Rate Of Less Than 1%.
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Affiliation(s)
- Conrado Auer Trentini
- Serviço de Ortopedia e Traumatologia, Hospital Universitário Regional dos Campos Gerais, Ponta Grossa, PR, Brasil
- Serviço de Ortopedia e Traumatologia, Hospital Universitário Cajuru, Curitiba, PR, Brasil
| | - Marcela de Andrade Balsano
- Serviço de Ortopedia e Traumatologia, Hospital Universitário Regional dos Campos Gerais, Ponta Grossa, PR, Brasil
| | - Mark Deeke
- Serviço de Ortopedia e Traumatologia, Hospital Universitário Cajuru, Curitiba, PR, Brasil
| | - Francisco José Zaniolo
- Serviço de Ortopedia e Traumatologia, Hospital Universitário Cajuru, Curitiba, PR, Brasil
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Forlenza EM, Higgins JDD, Keating TC, Berger RA, Della Valle CJ, Sporer SM. Three Differing Methods of Treating Intraoperative Nondisplaced Calcar Fractures Demonstrate Similar Radiographic Stem Subsidence. J Arthroplasty 2024; 39:S254-S258. [PMID: 38537839 DOI: 10.1016/j.arth.2024.03.049] [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: 12/15/2023] [Revised: 03/14/2024] [Accepted: 03/16/2024] [Indexed: 04/15/2024] Open
Abstract
BACKGROUND Several management strategies have been described to treat intraoperative calcar fractures during total hip arthroplasty (THA), including retaining the primary implant and utilizing cerclage cables (CCs) or switching the implant to one that bypasses the fracture and achieves diaphyseal fixation. However, the radiographic and clinical outcomes of these differing strategies have never been described and compared. METHODS We retrospectively identified 50 patients who sustained an intraoperative calcar fracture out of 9,129 primary total hip arthroplasties (0.55%) performed by one of three surgeons between 2008 and 2022. Each of the three surgeons consistently employed a distinct strategy for the management of these fractures: retention of the primary metaphyseal-engaging implant and placement of CCs; exchange to a modular, tapered-fluted stem (MTF); or exchange to a fully-coated, diaphyseal-engaging stem (FC). Stem subsidence was then evaluated on standing anteroposterior pelvis radiographs at three months and one year postoperatively. Postoperative medical and surgical complication rates were evaluated. RESULTS A total of fifteen patients were treated with CC, 15 with MTF, and 20 with FC. At three-month follow-up, mean stem subsidence was 0.43 ± 0.08 mm, 1.47 ± 0.36 mm, and 0.68 ± 0.39 mm for CC, MTF, and FC cohorts, respectively (P = .323). At one-year, mean stem subsidence was 0.70 ± 0.08 mm, 1.74 ± 0.69 mm, and 1.88 ± 0.90 mm for the CC, MTF, and FC cohorts, respectively (P = .485). Medical complications included 2 venous thromboembolic events (4%) within 90 days of surgery. There were 6 reoperations (12%); 3 (6%) for acute periprosthetic joint infection (all within the FC cohort); 2 (4%) for postoperative periprosthetic fractures (one fracture distal to the stem in the FC cohort and one fracture at the level of the stem in the MTF cohort), and 1 (2%) closed reduction for instability (within the CC cohort). CONCLUSIONS The three described methods of managing intraoperative nondisplaced calcar fractures demonstrated little radiographic stem subsidence; however, the risk of reoperation was much higher than expected.
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Affiliation(s)
- Enrico M Forlenza
- Department of Orthopedic Surgery, Rush University Medical Center, Chicago, Illinois
| | - John D D Higgins
- Department of Orthopedic Surgery, Rush University Medical Center, Chicago, Illinois
| | - Timothy C Keating
- Department of Orthopedic Surgery, Rush University Medical Center, Chicago, Illinois
| | - Richard A Berger
- Department of Orthopedic Surgery, Rush University Medical Center, Chicago, Illinois
| | - Craig J Della Valle
- Department of Orthopedic Surgery, Rush University Medical Center, Chicago, Illinois
| | - Scott M Sporer
- Department of Orthopedic Surgery, Rush University Medical Center, Chicago, Illinois
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Kelly M, Chen AF, Ryan SP, Working ZM, De A, Mullen K, Porter KR, Kagan R. Femoral Component Design Is Associated With the Risk of Periprosthetic Femur Fracture After Cementless THA in Patients 65 Years or Older. Clin Orthop Relat Res 2024; 482:1485-1493. [PMID: 38323976 PMCID: PMC11272275 DOI: 10.1097/corr.0000000000002985] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/17/2023] [Accepted: 01/03/2024] [Indexed: 02/08/2024]
Abstract
BACKGROUND Periprosthetic femur fracture is a known complication after THA. The associated risk of cementless femoral component design for periprosthetic femur fracture in a registry population of patients older than 65 years has yet to be clearly identified. QUESTIONS/PURPOSES (1) Is femoral stem geometry associated with the risk of periprosthetic femur fracture after cementless THA? (2) Is the presence or absence of a collar on cementless femoral implant designs associated with the risk of periprosthetic femur fracture after THA? METHODS We analyzed American Joint Replacement Registry data from 2012 to March 2020. Unique to this registry is the high use of cementless femoral stems in patients 65 years and older. We identified 266,040 primary cementless THAs during the study period in patients with a diagnosis of osteoarthritis and surgeries linked to supplemental Centers for Medicare and Medicaid data where available. Patient demographics, procedure dates, and reoperation for periprosthetic femur fracture with revision or open reduction and internal fixation were recorded. The main analysis was performed comparing the Kheir and Chen classification: 42% (112,231 of 266,040) were single-wedge, 22% (57,758 of 266,040) were double-wedge, and 24% (62,983 of 266,040) were gradual taper/metadiaphyseal-filling cementless femoral components, which yielded a total of 232,972 primary cementless THAs. An additional analysis compared cementless stems with collars (20% [47,376 of 232,972]) with those with collarless designs (80% [185,596 of 232,972]). A Cox proportional hazard regression analysis with the competing risk of death was used to evaluate the association of design and fracture risk while adjusting for potential confounders. RESULTS After controlling for the potentially confounding variables of age, sex, geographic region, osteoporosis or osteopenia diagnosis, hospital volume, and the competing risk of death, we found that compared with gradual taper/metadiaphyseal-filling stems, single-wedge designs were associated with a greater risk of periprosthetic femur fracture (HR 2.9 [95% confidence interval (CI) 2.2 to 3.9]; p < 0. 001). Compared with gradual taper/metadiaphyseal-filling stems, double-wedge designs showed an increased risk of periprosthetic femur fracture (HR 3.0 [95% CI 2.2 to 4.0]; p < 0. 001). Collarless stems showed an increased risk of periprosthetic fracture compared with collared stems (HR 7.8 [95% CI 4.1 to 15]; p < 0. 001). CONCLUSION If cementless femoral fixation is used for THA in patients 65 years or older, surgeons should consider using gradual taper/metadiaphyseal-filling and collared stem designs because they are associated with a lower risk of periprosthetic femur fracture. Future investigations should compare gradual taper/metadiaphyseal-filling and collared cementless designs with cemented fixation in this population. LEVEL OF EVIDENCE Level III, therapeutic study.
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Affiliation(s)
- Mackenzie Kelly
- Department of Orthopaedics and Rehabilitation, Oregon Health and Science University, Portland, OR, USA
| | - Antonia F. Chen
- Department of Orthopaedics, Brigham and Women’s Hospital, Boston, MA, USA
| | - Sean P. Ryan
- Department of Orthopaedics, Duke University Hospital, Raleigh, NC, USA
| | - Zachary M. Working
- Department of Orthopaedics and Rehabilitation, Oregon Health and Science University, Portland, OR, USA
| | - Ayushmita De
- American Academy of Orthopaedic Surgeons, Combined Analytics Team, Registries and Quality, Rosemont, IL, USA
| | - Kyle Mullen
- American Academy of Orthopaedic Surgeons, Combined Analytics Team, Registries and Quality, Rosemont, IL, USA
| | - Kimberly R. Porter
- American Academy of Orthopaedic Surgeons, Combined Analytics Team, Registries and Quality, Rosemont, IL, USA
| | - Ryland Kagan
- Department of Orthopaedics and Rehabilitation, Oregon Health and Science University, Portland, OR, USA
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Lee KH, Hung YT, Chang CY, Wang JC, Tsai SW, Chen CF, Wu PK, Chen WM. The cementless taper wedge vs. fit-and-fill stem in primary total hip arthroplasty: risk of stem-related complication differs across Dorr types. Arch Orthop Trauma Surg 2024; 144:2839-2847. [PMID: 38739153 DOI: 10.1007/s00402-024-05361-y] [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: 03/02/2024] [Accepted: 05/02/2024] [Indexed: 05/14/2024]
Abstract
INTRODUCTION The choice between a cementless taper wedge stem and a fit-and-fill stem in total Hip arthroplasty (THA) for various proximal femoral morphological types has not been thoroughly evaluated. This study aimed to compare the risk of stem-related complications between these two stem types in Dorr type A, B, and C femurs. MATERIALS AND METHODS From January 2015 through April 2021, we retrospectively reviewed 1995 cementless THA procedures. We stratified all procedures into three groups: Dorr type A (N = 360, 18.0%), B (N = 1489, 74.7%) and C (N = 146, 7.3%). The primary outcome domain was stem-related complications, including stem subsidence ≥ 3 mm, intraoperative fracture, periprosthetic fracture and aseptic stem loosening. We performed multivariate regression analysis to compare the risk of stem-related complication between the two stem types. Other factors included age, sex, body mass index, diagnosis, age-adjusted Charlson comorbidity index, stem alignment and canal fill ratio. RESULTS The incidence of stem-related complications in the taper wedge and fit-and-fill stem groups was 4.4% (N = 15) and 6.5% (N = 107), respectively. Fit-and-fill stems showed an increased risk of stem-related complications (aOR: 9.903, 95% CI: 1.567-62.597) only in Dorr type C femurs. No significant difference in risk was observed in Dorr type A and B femurs. Furthermore, the canal fill ratio at the lesser trochanter, 2 cm and 7 cm below the lesser trochanter, did not exhibit an association with stem-related complications in any Dorr type. CONCLUSIONS Concerning the risk of stem-related complications, the taper wedge stem was a better choice in Dorr type C femurs. However, there was no difference in risk between the taper wedge stem and fit-and-fill stem in Dorr type A and B femurs.
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Affiliation(s)
- Kun-Han Lee
- Department of Orthopaedics and Traumatology, Taipei Veterans General Hospital, No. 201, Sec 2, Shi-Pai Road, Taipei, 11217, Taiwan
- Department of Orthopaedics, School of Medicine, National Yang Ming Chiao Tung University, Taipei, Taiwan
| | - Yueh-Ting Hung
- Department of Orthopaedics and Traumatology, Taipei Veterans General Hospital, No. 201, Sec 2, Shi-Pai Road, Taipei, 11217, Taiwan
- Department of Orthopaedics, School of Medicine, National Yang Ming Chiao Tung University, Taipei, Taiwan
| | - Cheng-Yang Chang
- Department of Orthopaedics and Traumatology, Taipei Veterans General Hospital, No. 201, Sec 2, Shi-Pai Road, Taipei, 11217, Taiwan
- Department of Orthopaedics, School of Medicine, National Yang Ming Chiao Tung University, Taipei, Taiwan
| | - Jui-Chien Wang
- Department of Orthopaedics and Traumatology, Taipei Veterans General Hospital, No. 201, Sec 2, Shi-Pai Road, Taipei, 11217, Taiwan
- Department of Orthopaedics, School of Medicine, National Yang Ming Chiao Tung University, Taipei, Taiwan
| | - Shang-Wen Tsai
- Department of Orthopaedics and Traumatology, Taipei Veterans General Hospital, No. 201, Sec 2, Shi-Pai Road, Taipei, 11217, Taiwan.
- Department of Orthopaedics, School of Medicine, National Yang Ming Chiao Tung University, Taipei, Taiwan.
| | - Cheng-Fong Chen
- Department of Orthopaedics and Traumatology, Taipei Veterans General Hospital, No. 201, Sec 2, Shi-Pai Road, Taipei, 11217, Taiwan
- Department of Orthopaedics, School of Medicine, National Yang Ming Chiao Tung University, Taipei, Taiwan
| | - Po-Kuei Wu
- Department of Orthopaedics and Traumatology, Taipei Veterans General Hospital, No. 201, Sec 2, Shi-Pai Road, Taipei, 11217, Taiwan
- Department of Orthopaedics, School of Medicine, National Yang Ming Chiao Tung University, Taipei, Taiwan
| | - Wei-Ming Chen
- Department of Orthopaedics and Traumatology, Taipei Veterans General Hospital, No. 201, Sec 2, Shi-Pai Road, Taipei, 11217, Taiwan
- Department of Orthopaedics, School of Medicine, National Yang Ming Chiao Tung University, Taipei, Taiwan
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Leiss F, Goetz JS, Schindler M, Reinhard J, Müller K, Grifka J, Greimel F, Meyer M. Influence of bone mineral density on femoral stem subsidence after cementless THA. Arch Orthop Trauma Surg 2024; 144:451-458. [PMID: 37578658 DOI: 10.1007/s00402-023-05006-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/09/2023] [Accepted: 07/22/2023] [Indexed: 08/15/2023]
Abstract
INTRODUCTION Femoral stem subsidence can lead to aseptic loosening after total hip arthroplasty (THA). Low bone mineral density (BMD) is a risk factor for stem subsidence as it can affect the initial stability and osteointegration. We evaluated whether reduced bone mineral density is related to higher subsidence of the femoral stem after primary cementless THA with enhanced recovery rehabilitation. METHODS 79 patients who had undergone primary cementless THA with enhanced recovery rehabilitation were analyzed retrospectively. Subsidence of the femoral stem was measured on standing pelvic anterior-posterior radiographs after 4-6 weeks and one year. Patient individual risk factors for stem subsidence (stem size, canal flare index, canal fill ratio, body mass index (BMI), demographic data) were correlated. Dual X-ray absorptiometry (DXA) scans were performed of the formal neck and the lumbar spine including the calculation of T-score and Z-score. Patient-reported outcome measures were evaluated 12 months postoperatively. RESULTS Stem subsidence appeared regardless of BMD (overall collective 2.3 ± 1.64 mm). Measure of subsidence was even higher in patients with normal BMD (2.8 ± 1.7 mm vs. 2.0 ± 1.5 mm, p = 0.05). High BMI was correlated with increased stem subsidence (p = 0.015). Subsidence had no impact on improvement of patient-related outcome measures (WOMAC, EQ-5D-5L and EQ-VAS) after THA. Patients with low BMD reported lower quality of life 12 month postoperatively compared to patients with normal BMD (EQ-5D-5L 0.82 vs. 0.91, p = 0.03). CONCLUSION Stable fixation of a cementless stem succeeds also in patients with reduced BMD. Regarding stem subsidence, enhanced recovery rehabilitation can be safely applied in patients with low BMD.
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Affiliation(s)
- Franziska Leiss
- Department of Orthopedic Surgery, Asklepios Klinikum Bad Abbach, Regensburg University Medical Center, Kaiser-Karl V.-Allee 3, 93077, Bad Abbach, Germany.
| | - Julia Sabrina Goetz
- Department of Orthopedic Surgery, Asklepios Klinikum Bad Abbach, Regensburg University Medical Center, Kaiser-Karl V.-Allee 3, 93077, Bad Abbach, Germany
| | - Melanie Schindler
- Department of Orthopedic Surgery, Asklepios Klinikum Bad Abbach, Regensburg University Medical Center, Kaiser-Karl V.-Allee 3, 93077, Bad Abbach, Germany
| | - Jan Reinhard
- Department of Orthopedic Surgery, Asklepios Klinikum Bad Abbach, Regensburg University Medical Center, Kaiser-Karl V.-Allee 3, 93077, Bad Abbach, Germany
| | - Karolina Müller
- Center for Clinical Studies, University Medical Center Regensburg, Franz-Josef-Strauss-Allee 11, 93053, Regensburg, Germany
| | - Joachim Grifka
- Department of Orthopedic Surgery, Asklepios Klinikum Bad Abbach, Regensburg University Medical Center, Kaiser-Karl V.-Allee 3, 93077, Bad Abbach, Germany
| | - Felix Greimel
- Department of Orthopedic Surgery, Asklepios Klinikum Bad Abbach, Regensburg University Medical Center, Kaiser-Karl V.-Allee 3, 93077, Bad Abbach, Germany
| | - Matthias Meyer
- Department of Orthopedic Surgery, Asklepios Klinikum Bad Abbach, Regensburg University Medical Center, Kaiser-Karl V.-Allee 3, 93077, Bad Abbach, Germany
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Park JW, Kim JK, Kim HS, Lee YK, Ha YC, Koo KH. Resection of the femoral neck: a new technique for the treatment of mallory type I intraoperative femoral fracture during total hip arthroplasty. Acta Orthop Belg 2023; 89:619-623. [PMID: 38205751 DOI: 10.52628/89.4.10516] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2024]
Abstract
Intraoperative femoral fracture is a common complication during cementless total hip arthroplasty (THA). Cerclage wiring has been used for this type of fractures to attain intraoperative stability of the femoral stem. We designed a new technique to treat Mallory type 1 intraoperative femoral fractures. We excised fractured femoral neck fragment and without additional fixation and lightly tapped down the femoral stem to obtain a tight contact to the femoral cortex at the subtrochanteric level. In this case series, we described this technique and reported its outcomes. From January 2015 to December 2017, 600 cementless THAs (557 patients) were done with use of a proximally coated tapered stem design at our department. Among the 600 THAs, Mallory type 1 intraoperative femoral fracture occurred in 8 hips (8 patients), and all of them were treated with the excision of the fractured femoral neck. Mean age of the 8 patients was 58.1 years (range, 30.4 to 81.3 years) at the time of surgery. We report the results of this new technique at postoperative 2 to 5 years (mean, 3.4 years). All stems were placed in the neutral position. There was no revision and no stem showed any evidence of subsidence or loosening during the follow-up. The mean Harris hip score was 85.9 points at the latest follow-up. We recommend to use the femoral neck excision technique for the treatment of Mallory type 1 intraoperative femoral fractures.
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Liu Y, Li C, Cao Z, Wang X, Wen J, Ping H, Kong X, Chai W. Undetected Intraoperative Periprosthetic Femoral Fractures in Patients Undergoing Primary Total Hip Arthroplasty: A Retrospective Case Series and Literature Review. Orthop Surg 2023; 15:758-765. [PMID: 36647808 PMCID: PMC9977600 DOI: 10.1111/os.13646] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/24/2022] [Revised: 11/30/2022] [Accepted: 12/08/2022] [Indexed: 01/18/2023] Open
Abstract
OBJECTIVE Periprosthetic fracture in total hip arthroplasty (THA) can be catastrophic, and early detection and appropriate management are vital to the overall prognosis. This study aimed to describe and summarize the features of undetected intraoperative periprosthetic femoral fractures (IPFFs) in primary THA patients and treatment measures and to review the relevant literature. METHODS We reviewed a total of 6350 primary THAs performed at our institution between January 2013 and December 2020 and screened all IPFFs. Of 138 IPFFs, 24 were undetected and met the inclusion criteria. We recorded and compared basic patient and operative information and measured some parameters to evaluate canal morphologies based on preoperative radiographs. We also compared fracture line characteristics using postoperative radiographs to summarize the features of intraoperative fractures and propose treatment strategies. The Kolmogorov-Smirnov test was used to test the normality of the variable distributions. Measured parameters in all groups were analyzed using one-way analysis of variance and compared using Dunnett's test. The χ2 and Fisher exact tests were used to compare reoperation rates across the groups. Interrater and intrarater reliability were evaluated by intraclass correlation coefficients. RESULTS Among the 24 hips, there was no significant difference in patient demographics, basic operative information or morphology. The incidence of IPFFs in primary THA patients was 2.17%, and up to 17.4% of IPFFs were undetected until postoperative fluoroscopy. The incidence of undetected IPFFs among all primary THA patients was 0.38% and varied by stem type, with the highest incidence in femurs with either anatomical (1.04%, 4/385) or modular stems (0.90%, 9/1003). Femurs with anatomical stems had a higher reoperation rate. The distal periprosthetic (Gruen zone 4) fracture line of femurs with tapered stems was more prone to involve the medial or lateral bone cortex, which could cause instability. CONCLUSION An undetected IPFF is most likely in femurs fitted with a prosthesis of an inappropriate size or type. Anatomical stems will most likely cause unstable fractures; thus, it is recommended to use them with caution and note the possibility of medial distal femoral fracture. Improper modular stem type or size selection results in longitudinal fractures of the distal femur, and prophylactic cerclage wire binding is recommended in dysplastic hips. Incorrect use of tapered stems in well-ossified femurs may cause distal femoral fractures involving the medial or lateral bone cortex. Intraoperative fluoroscopy after implantation may help detect hidden fractures.
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Affiliation(s)
- Yubo Liu
- School of MedicineNankai UniversityTianjinChina,Senior Department of OrthopaedicsThe Fourth Medical Center of PLA General HospitalBeijingChina
| | - Chao Li
- Senior Department of OrthopaedicsThe Fourth Medical Center of PLA General HospitalBeijingChina,National Clinical Research Center for OrthopaedicsSports Medicine & RehabilitationBeijingChina
| | - Zheng Cao
- School of MedicineNankai UniversityTianjinChina,Senior Department of OrthopaedicsThe Fourth Medical Center of PLA General HospitalBeijingChina
| | - Xin Wang
- School of MedicineNankai UniversityTianjinChina,Senior Department of OrthopaedicsThe Fourth Medical Center of PLA General HospitalBeijingChina
| | - Jiaxin Wen
- School of MedicineNankai UniversityTianjinChina,Senior Department of OrthopaedicsThe Fourth Medical Center of PLA General HospitalBeijingChina
| | - Hangyu Ping
- School of MedicineNankai UniversityTianjinChina,Senior Department of OrthopaedicsThe Fourth Medical Center of PLA General HospitalBeijingChina
| | - Xiangpeng Kong
- Senior Department of OrthopaedicsThe Fourth Medical Center of PLA General HospitalBeijingChina,National Clinical Research Center for OrthopaedicsSports Medicine & RehabilitationBeijingChina
| | - Wei Chai
- Senior Department of OrthopaedicsThe Fourth Medical Center of PLA General HospitalBeijingChina,National Clinical Research Center for OrthopaedicsSports Medicine & RehabilitationBeijingChina
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10
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Wendler T, Fischer B, Brand A, Weidling M, Fakler J, Zajonz D, Osterhoff G. Biomechanical testing of different fixation techniques for intraoperative proximal femur fractures: a technical note. Int Biomech 2022; 9:27-32. [DOI: 10.1080/23335432.2022.2142159] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Affiliation(s)
- Toni Wendler
- ZESBO Centre for Research on Musculoskeletal Systems, Leipzig University, Leipzig, Germany
- Institute of Anatomy, Leipzig University, Leipzig, Germany
| | - Benjamin Fischer
- ZESBO Centre for Research on Musculoskeletal Systems, Leipzig University, Leipzig, Germany
- Department of Orthopaedics Trauma and Plastic Surgery, Leipzig University, Leipzig, Germany
| | - Alexander Brand
- Department of Orthopaedics Trauma and Plastic Surgery, Leipzig University, Leipzig, Germany
| | - Martin Weidling
- ZESBO Centre for Research on Musculoskeletal Systems, Leipzig University, Leipzig, Germany
- Department of Neurosurgery, Leipzig University, Leipzig, Germany
| | - Johannes Fakler
- Department of Orthopaedics Trauma and Plastic Surgery, Leipzig University, Leipzig, Germany
| | - Dirk Zajonz
- ZESBO Centre for Research on Musculoskeletal Systems, Leipzig University, Leipzig, Germany
- Department of Orthopaedics Trauma and Plastic Surgery, Leipzig University, Leipzig, Germany
- Department of Orthopaedic, Trauma and Reconstructive Surgery, Zeisigwaldkliniken Bethanien, Chemnitz, Germany
| | - Georg Osterhoff
- Department of Orthopaedics Trauma and Plastic Surgery, Leipzig University, Leipzig, Germany
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11
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Ji Q, Wang F, He Q, Li Y, Ma Y. Effect of Low-Dose Dexmedetomidine Combined with Lumbosacral Plexus Block Guided by Ultrasound Imaging Based on Image Segmentation Algorithm in Fracture Surgery. COMPUTATIONAL INTELLIGENCE AND NEUROSCIENCE 2022; 2022:8063874. [PMID: 35676952 PMCID: PMC9170447 DOI: 10.1155/2022/8063874] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/21/2022] [Revised: 04/25/2022] [Accepted: 05/06/2022] [Indexed: 11/18/2022]
Abstract
The aim of this study was to analyze the application of ultrasound-guided low-dose dexmedetomidine combined with lumbosacral plexus block based on artificial intelligence algorithm in the surgical treatment of proximal femoral fractures. 104 patients with proximal femoral fractures were divided into 52 cases in the experimental group (ultrasound-guided lumbosacral plexus block combined with dexmedetomidine based on local fitting image segmentation algorithm) and 52 cases in the routine group (endotracheal intubation and inhalation combined with general anesthesia). An image segmentation algorithm based on local fitting was constructed to enhance the ultrasound image. It was found that in the routine group, the heart rate (HR), systolic blood pressure (SBP), and diastolic blood pressure (DBP) at the beginning of intravenous injection of dexmedetomidine, during skin incision, and half an hour after skin incision were significantly lower than those at admission (P < 0.05). The pressing times of patient-controlled intravenous analgesia (PCIA) in the conventional group (17.05 ± 6.85 times) were significantly higher than that in the experimental group (8.55 ± 4.12 times), and the difference was statistically significant (P < 0.05). The visual analogue scale (VAS) scores at 1, 5, 10, and 15 after operation in the routine group were significantly higher than those in the experimental group (P < 0.05). The number of dizziness, nausea, and vomiting, venous thrombosis of lower limbs, cardiovascular events, and pulmonary infection in the routine group on the 1st, 2nd, and 3rd days after operation were significantly higher than those in the experimental group (P < 0.05). In summary, the ultrasound-guided lumbar plexus-sacral plexus block combined with dexmedetomidine anesthesia based on image segmentation algorithm can effectively maintain the hemodynamic stability of patients, with remarkable analgesic effect and high safety.
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Affiliation(s)
- Qiang Ji
- Department of Anesthesiology, Hebei Gucheng Hospital, Hengshui 253800, Hebei, China
| | - Feng Wang
- Department of Anesthesiology, Hebei Gucheng Hospital, Hengshui 253800, Hebei, China
| | - Qiang He
- Operation Room, Hebei Gucheng Hospital, Hengshui 253800, Hebei, China
| | - Yanhui Li
- Department of Pain, Hebei Gucheng Hospital, Hengshui 253800, Hebei, China
| | - Yan Ma
- Department of Anesthesiology, Hebei Gucheng Hospital, Hengshui 253800, Hebei, China
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12
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Fixation of intraoperative proximal femoral fractures during THA using two versus three cerclage wires - a biomechanical study. BMC Musculoskelet Disord 2022; 23:40. [PMID: 34996409 PMCID: PMC8742345 DOI: 10.1186/s12891-021-04956-5] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/03/2021] [Accepted: 12/12/2021] [Indexed: 11/10/2022] Open
Abstract
Background Intraoperative proximal femoral fractures (IPFF) are relevant complications during total hip arthroplasty. Fixation using cerclage wires (CW) represents a minimally-invasive technique to address these fractures through the same surgical approach. The goal of treatment is to mobilise the patient as early as possible, which requires high primary stability. This study aimed to compare different cerclage wire configurations fixing IPFF with regard to biomechanical primary stability. Methods Standardised IPFF (type II, Modified Mallory Classification) were created in human fresh frozen femora and were fixed either by two or three CW (1.6 mm, stainless steel). All cadaveric specimens (n = 42) were randomised to different groups (quasi-static, dynamic) or subgroups (2 CW, 3 CW) stratified by bone mineral density determined by Dual Energy X-ray Absorptiometry. Using a biomechanical testing setup, quasi-static and dynamic cyclic failure tests were carried out. Cyclic loading started from 200 N to 500 N at 1 Hz with increasing peak load by 250 N every 100 cycles until failure occurred or maximum load (5250 N) reached. The change of fracture gap size was optically captured. Results No significant differences in failure load after quasi-static (p = 0.701) or dynamic cyclic loading (p = 0.132) were found between the experimental groups. In the quasi-static load testing, all constructs resisted 250% of the body weight (BW) of their corresponding body donor. In the dynamic cyclic load testing, all but one construct (treated by 3 CW) resisted 250% BW. Conclusions Based on this in vitro data, both two and three CW provided sufficient primary stability according to the predefined minimum failure load (250% BW) to resist. The authors recommend the treatment using two CW because it reduces the risk of vascular injury and shortens procedure time. Supplementary Information The online version contains supplementary material available at 10.1186/s12891-021-04956-5.
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13
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Leiss F, Götz JS, Meyer M, Maderbacher G, Reinhard J, Parik L, Grifka J, Greimel F. Differences in femoral component subsidence rate after THA using an uncemented collarless femoral stem: full weight-bearing with an enhanced recovery rehabilitation versus partial weight-bearing. Arch Orthop Trauma Surg 2022; 142:673-680. [PMID: 34019145 PMCID: PMC8924083 DOI: 10.1007/s00402-021-03913-0] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/17/2021] [Accepted: 04/12/2021] [Indexed: 11/23/2022]
Abstract
BACKGROUND Femoral component subsidence is a known risk factor for early failure of total hip arthroplasty (THA) using cementless stems. The aim of the study was to compare an enhanced recovery concept with early full weight-bearing rehabilitation and partial weight-bearing on stem subsidence. In addition, the influence of patient-related and anatomical risk factors on subsidence shall be assessed. METHODS One hundred and fourteen patients underwent primary cementless THA and were retrospectively analyzed. Sixty-three patients had an enhanced recovery rehabilitation with early full weight-bearing and 51 patients had rehabilitation with partial weight-bearing (20 kg) for 6 weeks. Postoperative subsidence was analyzed on standing pelvic anterior-posterior radiographs after 4 weeks and 1 year. Subsidence was measured in mm. Anatomical and prosthetic risk factors (stem size, canal flare index, canal fill ratio as well as BMI and demographic data) were correlated. RESULTS Femoral stem subsidence rate was significantly higher for the group with an enhanced recovery concept compared to the group with partial weight-bearing at the first radiological follow up after 4 weeks [2.54 mm (SD ± 1.86) vs. 1.55 mm (SD ± 1.80)] and the second radiological follow up after 1 year [3.43 mm (SD ± 2.24) vs. 1.94 (SD ± 2.16)] (p < 0.001, respectively). Stem angulation > 3° had a significant influence on subsidence. Canal flare index and canal fill ratio showed no significant correlation with subsidence as well as BMI and age. CONCLUSION In the present study, cementless stem subsidence was significantly higher in the group with enhanced recovery rehabilitation compared to partial weight-bearing. Small absolute values and differences were demonstrated and therefore possibly below clinical relevance. Anatomical radiological parameters and anthropometric data did not appear to be risk factors for stem subsidence.
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Affiliation(s)
- Franziska Leiss
- grid.7727.50000 0001 2190 5763Department of Orthopedic Surgery, Medical Center, Asklepios Klinikum Bad Abbach, Regensburg University, Kaiser-Karl V.-Allee 3, 93077 Bad Abbach, Germany
| | - Julia Sabrina Götz
- grid.7727.50000 0001 2190 5763Department of Orthopedic Surgery, Medical Center, Asklepios Klinikum Bad Abbach, Regensburg University, Kaiser-Karl V.-Allee 3, 93077 Bad Abbach, Germany
| | - Matthias Meyer
- grid.7727.50000 0001 2190 5763Department of Orthopedic Surgery, Medical Center, Asklepios Klinikum Bad Abbach, Regensburg University, Kaiser-Karl V.-Allee 3, 93077 Bad Abbach, Germany
| | - Günther Maderbacher
- grid.7727.50000 0001 2190 5763Department of Orthopedic Surgery, Medical Center, Asklepios Klinikum Bad Abbach, Regensburg University, Kaiser-Karl V.-Allee 3, 93077 Bad Abbach, Germany
| | - Jan Reinhard
- grid.7727.50000 0001 2190 5763Department of Orthopedic Surgery, Medical Center, Asklepios Klinikum Bad Abbach, Regensburg University, Kaiser-Karl V.-Allee 3, 93077 Bad Abbach, Germany
| | - Lukas Parik
- grid.7727.50000 0001 2190 5763Department of Orthopedic Surgery, Medical Center, Asklepios Klinikum Bad Abbach, Regensburg University, Kaiser-Karl V.-Allee 3, 93077 Bad Abbach, Germany
| | - Joachim Grifka
- grid.7727.50000 0001 2190 5763Department of Orthopedic Surgery, Medical Center, Asklepios Klinikum Bad Abbach, Regensburg University, Kaiser-Karl V.-Allee 3, 93077 Bad Abbach, Germany
| | - Felix Greimel
- grid.7727.50000 0001 2190 5763Department of Orthopedic Surgery, Medical Center, Asklepios Klinikum Bad Abbach, Regensburg University, Kaiser-Karl V.-Allee 3, 93077 Bad Abbach, Germany
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14
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Saglam N, Gulabi D, Agar A, Erdem AC, Bayam L, Erdem M. Is Obesity Associated with Higher Complication Rates in Total Hip Arthroplasty for High-Riding Dysplastic Hips? Indian J Orthop 2021; 55:987-992. [PMID: 34194656 PMCID: PMC8192644 DOI: 10.1007/s43465-020-00335-9] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/10/2020] [Accepted: 12/21/2020] [Indexed: 02/04/2023]
Abstract
OBJECTIVE Developmental dysplasia of the hip (DDH) is a disabling pathology leading to hip problems, such as painful arthritic hip, unstable hip, etc. Total hip arthroplasty (THA) is an effective treatment modality for this condition. Obesity has been shown to be associated with increased rates of complications following orthopaedic surgeries (Journal of Arthroplasty 20:46-50). The hypothesis of this study was that patients with a body mass index (BMI) greater than 30 (obese), who undergo total hip arthroplasty for dysplastic hip, are associated with longer operative and anaesthetic times, longer hospital stays and higher re-admission rates within 30 days. METHODS All the cases of total hip arthroplasty in patients with high-riding dysplastic hips were reviewed. Evaluation was made of a total of 68 patients comprising 64 females and 4 males, classified into two groups. Patients with BMI < 30 kg/m2 formed the non-obese group and patients with BMI ≥ 30 kg/m2 the obese group. RESULTS The mean age was 44.67 ± 6.49 years. BMI was < 30 in 44 (64.7%) patients and > 30 in 24 (35.3%) patients. The data analysis showed that mean surgical time, anaesthesia duration and re-admission rate were significantly higher in the group with BMI ≥ 30(obese) as compared to the group with BMI < 30 (non-obese) (p < 0.01). The complication rate was determined to be higher in the obese group (p < 0.05). CONCLUSION Obese patients performed with total hip arthroplasty for high-riding dysplastic hips had more complications and higher rates of re-admission to hospital compared with the non-obese patients.
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Affiliation(s)
- Necdet Saglam
- Umraniye Training and Research Hospital, Saglik Bilimleri University, Elmalikent mah., Adem yavuz cad., Umraniye, 34764 İstanbul, Turkey
| | - Deniz Gulabi
- Orthopaedic and Traumatology Department, Kanuni Sultan Suleyman Training and Research Hospital, Saglik Bilimleri University, Atakent mah, Istanbul cad. No:1, Kucukcekmece, 34303 İstanbul, Turkey
| | - Anil Agar
- Orthopaedic and Traumatology Department, Kanuni Sultan Suleyman Training and Research Hospital, Saglik Bilimleri University, Atakent mah, Istanbul cad. No:1, Kucukcekmece, 34303 İstanbul, Turkey
| | - Ahmet Can Erdem
- Orthopaedic and Traumatology Department, Faculty of Medicine, Bezmialem University, Yali Mah. Sahil yolu sok. No:16, Maltepe, 34844 İstanbul, Turkey
| | - Levent Bayam
- Orthopaedic and Traumatology Department, Faculty of Medicine, Sakarya University, Korucuk Mah. Konuralp Bulvari no: 81, 54290 Adapazarı, Sakarya Turkey
| | - Mehmet Erdem
- Orthopaedic and Traumatology Department, Faculty of Medicine, Sakarya University, Korucuk Mah. Konuralp Bulvari no: 81, 54290 Adapazarı, Sakarya Turkey
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15
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Shen J, Zhang Y, Yu G, Ji W. Multiple failures of internal fixation for treatment of periprosthetic femoral refracture: a case report and literature review. J Int Med Res 2021; 48:300060520958972. [PMID: 33292047 PMCID: PMC7727066 DOI: 10.1177/0300060520958972] [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] [Indexed: 11/18/2022] Open
Abstract
We herein report a case involving three failures of internal fixation after periprosthetic femoral fracture (Vancouver type B1). The patient had low bone mass (T-score of −1.7) and was overweight (body mass index of 28.7 kg/m2) but had no sign of femoral stem loosening. The first open reduction with internal fixation was performed according to the recommended treatment. Unexpectedly, three treatment failures subsequently occurred, after which the patient finally attained endurable walking activity. A literature review indicated that the intrinsic biomechanical problems of Vancouver B1 fractures have not been thoroughly addressed. Choosing the correct surgical strategy for Vancouver B1 fractures is essential to avoid complications and ensure healing. A sufficient locking plate and cable system should be used after the first failure if revision was not performed the first time.
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Affiliation(s)
- Jing Shen
- Orthopedics Department, The First Affiliated Hospital of Zhejiang Chinese Medical University, HangZhou, ZheJiang, P.R. China
| | - Yang Zhang
- Traditional Chinese Medical hospital of Zhuji, Zhejiang province, China
| | | | - Weifeng Ji
- Orthopedics Department, The First Affiliated Hospital of Zhejiang Chinese Medical University, HangZhou, ZheJiang, P.R. China
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16
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Ferbert T, Jaber A, Gress N, Schmidmaier G, Gotterbarm T, Merle C. Impact of intraoperative femoral fractures in primary hip arthroplasty: a comparative study with a mid-term follow-up. Hip Int 2020; 30:544-551. [PMID: 31096789 DOI: 10.1177/1120700019849911] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
BACKGROUND Intraoperative femoral fractures (IFF) during primary total hip arthroplasty (THA) pose a major clinical challenge, and data on mid-term implant performance, functional outcome and patient satisfaction is limited. METHODS 50 patients who sustained IFFs during primary THA were retrospectively reviewed. A control group of patients who received a primary THA without complications was matched according to gender, age, body mass index and indication for THA. Both groups were followed-up for a minimum duration of 2 years. Average follow-up duration was 5.6 years (range 2-11.8 years) for the fracture group and 6 years (range 4.1-8.3 years) for the control group respectively. The following parameters were assessed and compared: stem revision, Harris Hip Score improvement, pain scale improvement, WOMAC, Tegner Score, UCLA, SF-36, forgotten joint score and patient satisfaction. RESULTS There were no stem revisions in the fracture group and 1 stem revision in the control group. Stem survival was 100% and 98.1% respectively (p = 0.447). The mean improvement in Harris hip score was 35.3 and 44.8 respectively. Significantly lower Harris Hip score improvement (p = 0.021) and patient satisfaction (p = 0.01) were observed in the fracture group. All other acquired parameters did not show significant differences. CONCLUSION Intraoperative fractures of the proximal femur are a relevant complication that does not lead to higher revision rates but might worsen the functional outcome and negatively impact patient satisfaction in mid-term follow-up even if treated appropriately.
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Affiliation(s)
- Thomas Ferbert
- Department of Orthopaedics, Trauma Surgery and Spinal Cord Injury, Heidelberg University Hospital, Heidelberg, Germany
| | - Ayham Jaber
- Department of Orthopaedics, Trauma Surgery and Spinal Cord Injury, Heidelberg University Hospital, Heidelberg, Germany
| | - Nathan Gress
- Department of Orthopaedics, Trauma Surgery and Spinal Cord Injury, Heidelberg University Hospital, Heidelberg, Germany
| | - Gerhard Schmidmaier
- Department of Orthopaedics, Trauma Surgery and Spinal Cord Injury, Heidelberg University Hospital, Heidelberg, Germany
| | - Tobias Gotterbarm
- Department of Orthopaedics, Trauma Surgery and Spinal Cord Injury, Heidelberg University Hospital, Heidelberg, Germany
| | - Christian Merle
- Department of Orthopaedics, Trauma Surgery and Spinal Cord Injury, Heidelberg University Hospital, Heidelberg, Germany
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17
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Liu T, Yang Y, Shen X, Xiao J, Zuo J, Gao Z. Comparison of two different on-shelf femoral stems for Crowe type IV developmental dysplasia of the hip. J Int Med Res 2020; 48:300060520947888. [PMID: 32808568 PMCID: PMC7436795 DOI: 10.1177/0300060520947888] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Objective This study was performed to evaluate the proximal anatomical compatibility of stems for treatment of Crowe IV developmental dysplasia of the hip (DDH) using a previously developed three-dimensional comparison technique. Methods Patients with Crowe IV DDH who underwent computed tomography were retrospectively analyzed. The femoral medullary canals were three-dimensionally reconstructed, and models of cementless modular (S-ROM; DePuy Synthes) and conical (Wagner Cone; Zimmer Biomet) implants were used for virtual implantation. The negative point percentages (NPPs) were applied to verify fitting. The average distance (deviation) and the root mean square of the distance (RMSd) were used to quantify geometric compatibilities. Results Four (16.7%) and 12 (50.0%) femoral medullary canals could not be fitted properly with either the modular or conical implant. The NPPs in the distal comparison region were significantly greater in the conical than modular group. The deviation was significantly smaller in the modular than conical group. The RMSd was also significantly smaller in the modular than conical group. Conclusions Compared with conical implants, modular implants might be more effectively used in patients with Crowe type IV DDH. However, some Crowe IV DDH femurs with severe deformity cannot be fitted with either of these two on-shelf implants.
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Affiliation(s)
- Tong Liu
- Department of Orthopaedics, China-Japan Union Hospital of Jilin University, Changchun, Jilin, China
| | - Yuhui Yang
- Department of Orthopaedics, Guangdong General Hospital (Guangdong Academy of Medical Sciences), Guangzhou, Guangdong, China
| | - Xianyue Shen
- Department of Orthopaedics, China-Japan Union Hospital of Jilin University, Changchun, Jilin, China
| | - Jianlin Xiao
- Department of Orthopaedics, China-Japan Union Hospital of Jilin University, Changchun, Jilin, China
| | - Jianlin Zuo
- Department of Orthopaedics, China-Japan Union Hospital of Jilin University, Changchun, Jilin, China
| | - Zhongli Gao
- Department of Orthopaedics, China-Japan Union Hospital of Jilin University, Changchun, Jilin, China
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18
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Tootsi K, Lees L, Geiko B, Märtson A. Intraoperative complications in total hip arthroplasty using a new cementless femoral implant (SP-CL ®). J Orthop Traumatol 2020; 21:8. [PMID: 32451636 PMCID: PMC7248161 DOI: 10.1186/s10195-020-00548-6] [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: 02/22/2020] [Accepted: 04/24/2020] [Indexed: 12/15/2022] Open
Abstract
BACKGROUND Considering the excellent results already achieved in total hip arthroplasty (THA), new implants must be at least as safe as currently used implants and lead to longer survival. A new cementless femoral stem, SP-CL®, has been introduced. The aim of this study is to evaluate intraoperative complications and assess the risk factors of THA with the SP-CL® implant. MATERIALS AND METHODS All THA patients who were operated on using the SP-CL® (LINK, Hamburg, Germany) implant between 2015 and 2018 were included in the analysis. Data were collected from medical records from national and hospital electronic databases. Radiological measurements were made from standard pre- and postoperative radiographs. RESULTS A total of 222 THA were performed using the SP-CL® implant. The average age of the patients was 56 years (14-77 years). There were 1 transient sciatic nerve injury, 1 acetabular fracture, and 11 (5.0%) intraoperative femoral fractures (IFF), of which 7 were treated with cerclage wire or titanium band during the operation while the other fractures were treated conservatively. None of the IFF patients were revised due to fracture during the follow-up period (one revision due to infection). The radiographic morphology of proximal femur was associated with increased risk of IFF (p = 0.02). CONCLUSIONS The results of the current study demonstrate a 5% incidence of IFF when using the LINK SP-CL® femoral stem in THA. The radiographic morphology of the proximal femur was an important predictor of IFF and should be assessed when using SP-CL®. LEVEL OF EVIDENCE Level 4.
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Affiliation(s)
- Kaspar Tootsi
- Department of Traumatology and Orthopaedics, University of Tartu, Puusepa 8, Tartu, 51014, Estonia. .,Traumatology and Orthopaedics Clinic, Tartu University Hospital, Puusepa 8, Tartu, 51014, Estonia.
| | - Loviisa Lees
- Department of Traumatology and Orthopaedics, University of Tartu, Puusepa 8, Tartu, 51014, Estonia
| | - Boris Geiko
- Department of Traumatology and Orthopaedics, University of Tartu, Puusepa 8, Tartu, 51014, Estonia
| | - Aare Märtson
- Department of Traumatology and Orthopaedics, University of Tartu, Puusepa 8, Tartu, 51014, Estonia.,Traumatology and Orthopaedics Clinic, Tartu University Hospital, Puusepa 8, Tartu, 51014, Estonia
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19
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Hijazi A, Padela MT, Sayeed Z, Hammad A, Devole K, Frush T, Mostafa G, Yassir WK, Saleh KJ. Review article: Patient characteristics that act as risk factors for intraoperative complications in hip, knee, and shoulder arthroplasties. J Orthop 2019; 17:193-197. [PMID: 31879503 DOI: 10.1016/j.jor.2019.06.022] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/26/2019] [Accepted: 06/16/2019] [Indexed: 11/25/2022] Open
Abstract
The number of annual THA's, TKA's, and TSA's is set to increase significantly by the year 2030, making it imperative to understand the risks for negative outcomes in these procedures. While research has studied the patient risk factors for perioperative and postoperative complications, there has been relatively little research for intraoperative complications. After a thorough literature review, the most supported finding was that patients with a BMI >30 had significantly more intraoperative blood loss than those with a BMI <30. All other relationships between patient risk factors and intraoperative complications of interest were inadequately studied.
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Affiliation(s)
- Adel Hijazi
- John D. Dingell Veteran Affairs Medical Center, Detroit, MI, USA
| | - Muhammad Talha Padela
- John D. Dingell Veteran Affairs Medical Center, Detroit, MI, USA.,FAJR Scientific, Detroit, MI, USA.,Resident Research Partnership, Detroit, MI, USA.,Chicago Medical School, Department of Orthopaedic Surgery, Rosalind Franklin University, North Chicago, IL, USA.,Department of Orthopaedic Surgery, Detroit Medical Center, Detroit, MI, USA
| | - Zain Sayeed
- FAJR Scientific, Detroit, MI, USA.,Resident Research Partnership, Detroit, MI, USA.,Chicago Medical School, Department of Orthopaedic Surgery, Rosalind Franklin University, North Chicago, IL, USA.,Department of Orthopaedic Surgery, Detroit Medical Center, Detroit, MI, USA
| | - Aws Hammad
- Department of Orthopaedic Surgery, Detroit Medical Center, Detroit, MI, USA
| | - Kamela Devole
- John D. Dingell Veteran Affairs Medical Center, Detroit, MI, USA.,FAJR Scientific, Detroit, MI, USA
| | - Todd Frush
- Department of Orthopaedic Surgery, Detroit Medical Center, Detroit, MI, USA
| | - Gamal Mostafa
- John D. Dingell Veteran Affairs Medical Center, Detroit, MI, USA.,FAJR Scientific, Detroit, MI, USA
| | | | - Khaled J Saleh
- John D. Dingell Veteran Affairs Medical Center, Detroit, MI, USA.,FAJR Scientific, Detroit, MI, USA.,Michigan State University College of Medicine, Detroit, MI, USA.,Saleh Medical Innovations PLLC, Northville, MI, USA
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20
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Bellova P, Baecker H, Lotzien S, Brandt M, Schildhauer TA, Gessmann J. Risk analysis and clinical outcomes of intraoperative periprosthetic fractures: a retrospective study of 481 bipolar hemiarthroplasties. J Orthop Surg Res 2019; 14:432. [PMID: 31829214 PMCID: PMC6907126 DOI: 10.1186/s13018-019-1494-1] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/29/2019] [Accepted: 11/27/2019] [Indexed: 01/22/2023] Open
Abstract
BACKGROUND Intraoperative periprosthetic fractures (IPF) are a well-described complication following hip hemiarthroplasty. Our aims were to identify risk factors that characterize IPF and to investigate postoperative mobility. METHODS We retrospectively reviewed 481 bipolar hemiarthroplasties for displaced femoral neck fractures; of which, 421 (87.5%) were performed without cement, from January 2013 to March 2018. Data on the patients' demographics, comorbidities, femoral canal geometry (Dorr canal type, Canal Flare Index), surgeon's experience (junior vs. senior surgeon), and timing of surgery (daytime vs. on-call duty) were obtained. In patients with intraoperative fractures, further information was obtained. Patient mobility was assessed using matched-pair analysis. Mobility was classified according to the NHFD mobility score. The chi-square test, Fisher's exact test, and Fisher-Freeman-Halton exact test were used for comparison between categorical variables, while the Mann-Whitney U test was used for continuous variables. The data analysis was performed using SPSS. RESULTS Of 481 procedures, 34 (7.1%) IPFs were encountered. The Dorr canal type C was identified as a significant risk factor (p = .004). Other risk factors included female sex (OR 2.30, 95% CI .872-6.079), stovepipe femur (OR 1.749, 95% CI .823-3.713), junior surgeon (OR 1.204, 95% CI .596-2.432), and on-call-duty surgery (OR 1.471, 95% CI .711-3.046), although none showed a significant difference. Of 34 IPFs, 25 (73.5%) were classified as Vancouver type A. The treatment of choice was cerclage wiring. Within the 12 matched pairs identified, the postoperative mobility was slightly worse for the IPF group (delta = .41). CONCLUSIONS IPF is a serious complication with bipolar hemiarthroplasty. The identification of risk factors preoperatively, in particular femur shape, is crucial and should be incorporated into the decision-making process.
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Affiliation(s)
- Petri Bellova
- Department of Orthopedic and Trauma Surgery, BG University Clinic Bergmannsheil Bochum, Bürkle-de-la-Camp Platz 1, 44789, Bochum, Germany.
| | - Hinnerk Baecker
- Department of Orthopedic and Trauma Surgery, BG University Clinic Bergmannsheil Bochum, Bürkle-de-la-Camp Platz 1, 44789, Bochum, Germany
| | - Sebastian Lotzien
- Department of Orthopedic and Trauma Surgery, BG University Clinic Bergmannsheil Bochum, Bürkle-de-la-Camp Platz 1, 44789, Bochum, Germany
| | | | - Thomas A Schildhauer
- Department of Orthopedic and Trauma Surgery, BG University Clinic Bergmannsheil Bochum, Bürkle-de-la-Camp Platz 1, 44789, Bochum, Germany
| | - Jan Gessmann
- Department of Orthopedic and Trauma Surgery, BG University Clinic Bergmannsheil Bochum, Bürkle-de-la-Camp Platz 1, 44789, Bochum, Germany
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Lamb JN, Matharu GS, Redmond A, Judge A, West RM, Pandit HG. Risk Factors for Intraoperative Periprosthetic Femoral Fractures During Primary Total Hip Arthroplasty. An Analysis From the National Joint Registry for England and Wales and the Isle of Man. J Arthroplasty 2019; 34:3065-3073.e1. [PMID: 31353251 DOI: 10.1016/j.arth.2019.06.062] [Citation(s) in RCA: 54] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/21/2019] [Revised: 06/24/2019] [Accepted: 06/29/2019] [Indexed: 02/01/2023] Open
Abstract
BACKGROUND The aim of this study is to estimate risk factors for intraoperative periprosthetic femoral fractures (IOPFF) and each anatomic subtype (calcar crack, trochanteric fracture, femoral shaft fracture) during primary total hip arthroplasty. METHODS This retrospective cohort study included 793,823 primary total hip arthroplasties between 2004 and 2016. Multivariable regression modeling was used to estimate relative risk of patient, surgical, and implant factors for any IOPFF and for all anatomic subtypes of IOPFF. Clinically important interactions were assessed using multivariable regression. RESULTS Patient factors significantly increasing the risk of fracture were female gender, American Society of Anesthesiologists grade 3 to 5, and preoperative diagnosis including avascular necrosis of the hip, previous trauma, inflammatory disease, pediatric disease, and previous infection. Overall risk of IOPFF associated with age was greatest in patients below 50 years and above 80 years. Risk of any fracture reduced with computer-guided surgery and in non-National Health Service hospitals. Nonposterior approaches increased the risk of shaft and trochanteric fracture only. Cementless implants significantly increased the risk of only calcar cracks and shaft fractures and not trochanteric fractures. CONCLUSION Fracture risk increases in patients younger than 50 and older than 80 years, females, American Society of Anesthesiologists grade 3 to 5, and indications other than primary osteoarthritis. Large cumulative reduction in IOPFF risk may occur with use of cemented implants, posterior approach, and computer-guided surgery. LEVEL OF EVIDENCE Level 3b (cohort study).
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Affiliation(s)
- Jonathan N Lamb
- Leeds Institute of Rheumatic and Musculoskeletal Medicine (LIRMM), School of Medicine, University of Leeds, Chapel Allerton Hospital, Leeds, United Kingdom; Academic Department of Trauma & Orthopaedics, School of Medicine, University of Leeds, Leeds, United Kingdom
| | - Gulraj S Matharu
- Musculoskeletal Research Unit, Translational Health Sciences, Bristol Medical School, University of Bristol, Bristol, United Kingdom; Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, Nuffield Orthopaedic Centre, University of Oxford, Oxford, United Kingdom
| | - Anthony Redmond
- Leeds Institute of Rheumatic and Musculoskeletal Medicine (LIRMM), School of Medicine, University of Leeds, Chapel Allerton Hospital, Leeds, United Kingdom; Leeds Musculoskeletal Biomedical Research Centre, Chapel Allerton Hospital, Leeds, United Kingdom
| | - Andrew Judge
- Musculoskeletal Research Unit, Translational Health Sciences, Bristol Medical School, University of Bristol, Bristol, United Kingdom; Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, Nuffield Orthopaedic Centre, University of Oxford, Oxford, United Kingdom
| | - Robert M West
- Leeds Institute of Health Sciences, School of Medicine, University of Leeds, Leeds, United Kingdom
| | - Hemant G Pandit
- Leeds Institute of Rheumatic and Musculoskeletal Medicine (LIRMM), School of Medicine, University of Leeds, Chapel Allerton Hospital, Leeds, United Kingdom; Academic Department of Trauma & Orthopaedics, School of Medicine, University of Leeds, Leeds, United Kingdom; Nuffield Department of Orthopaedics, Rheumatology and Musculoskeletal Sciences, Nuffield Orthopaedic Centre, University of Oxford, Oxford, United Kingdom; Leeds Musculoskeletal Biomedical Research Centre, Chapel Allerton Hospital, Leeds, United Kingdom
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22
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von Engelhardt LV, Breil-Wirth A, Kothny C, Seeger JB, Grasselli C, Jerosch J. Long-term results of an anatomically implanted hip arthroplasty with a short stem prosthesis (MiniHip TM). World J Orthop 2018; 9:210-219. [PMID: 30364820 PMCID: PMC6198291 DOI: 10.5312/wjo.v9.i10.210] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/21/2018] [Revised: 06/17/2018] [Accepted: 06/28/2018] [Indexed: 02/06/2023] Open
Abstract
AIM To evaluate the clinical and radiological outcome nine and ten years after short-stemmed, bone preserving and anatomical hip arthroplasty with the MiniHipTM system.
METHODS In a prospective study, 186 patients underwent hip arthroplasty with a partial neck preserving short stem (MiniHipTM, Corin). Elderly patients were not excluded from this study, thus the mean age at the time of surgery was 59.3 years (range 32 to 82 years). Surgery and the follow-up assessments were performed at two Centers. Up until now, the mean follow-up was 112.5 ± 8.2 mo. The Oxford Hip Score (OHS) and the Hip Dysfunction Osteoarthritis and Outcome Score (HOOS) was assessed pre- and each year after surgery. The clinical follow-up was accompanied by standardized a.p. and axial radiological examinations. Periprosthetic lucencies, hypertrophies within the Gruen zones one to fourteen were assessed. A subsidence of the stem was investigated according to Morray and heterotopic ossifications were assessed according to Brooker.
RESULTS The OHS and HOOS improved from 18 ± 3.3 to 46 ± 2.0 and from 30 ± 8.3 to 95 ± 4.6 points, P < 0.001 respectively. There were no differences regarding age, etiology, friction pairings, etc., (P > 0.05). Two stems were revised due to a symptomatic subsidence four and twelve months postoperatively. Thus, the survivorship for aseptic loosening at nine to ten years was 98.66%. Including one stem revision due to a symptomatic exostosis, bursitis and thigh pain as well as one revision because of a septic stem loosening, the overall survival for the stem with revision for any reason was 97.32%. Besides one asymptomatic patient, radiological signs of a proximal stress-shielding, such as bone resorptions within the proximal Gruen zones, were not noticed. Findings suggesting a distal loading, e.g., bony hypertrophies or bone appositions of more than 2 mm, were also not detected.
CONCLUSION Regarding these first long-term results on the MiniHipTM, the implant performed exceedingly well with a high rate of survivorship for aseptic loosening. Our radiological results within the Gruen zones support the design rationale of the Minihip to provide a reliable metaphyseal anchoring with the expected proximal, more physiological load transfer. This might minimize or exclude a stress shielding which might be associated with thigh pain, proximal bone loss and an increased risk of aseptic loosening. The MiniHipTM is a reliable partial-neck retaining prosthesis with good a clinical long-term outcome in younger as well as elderly patients.
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Affiliation(s)
- Lars V von Engelhardt
- Faculty of Health, University of Witten/Herdecke, Witten 58448, Germany
- Department of Trauma Surgery Orthopedics and Sports Medicine, Katholisches Karl-Leisner Klinikum, Kleve 47533, Germany
| | - Andreas Breil-Wirth
- Department of Orthopedics, Trauma Surgery and Sports Medicine, Johanna Etienne Hospital, Neuss 41462, Germany
| | | | - Jörn Bengt Seeger
- Department of Orthopaedics and Orthopaedic Surgery, University Hospital Giessen and Marburg, Giessen 35392, Germany
| | - Christian Grasselli
- Department of Orthopedics, Trauma Surgery and Sports Medicine, Johanna Etienne Hospital, Neuss 41462, Germany
- Department of Orthopaedics and Traumatology, Waldburg-Zeil Clinic Tettnang, Tettnang 88069, Germany
| | - Joerg Jerosch
- Department of Orthopedics, Trauma Surgery and Sports Medicine, Johanna Etienne Hospital, Neuss 41462, Germany
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Affiliation(s)
- P S Young
- Department of Orthopaedics, Queen Elizabeth University Hospital, Glasgow, G51 4TF, UK
| | - S Patil
- Department of Orthopaedics, Queen Elizabeth University Hospital, Glasgow, G51 4TF, UK
| | - R M D Meek
- Department of Orthopaedics, Queen Elizabeth University Hospital, Glasgow, G51 4TF, UK
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24
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Fleischman AN, Schubert MM, Restrepo C, Chen AF, Rothman RH. Reduced Incidence of Intraoperative Femur Fracture With a Second-Generation Tapered Wedge Stem. J Arthroplasty 2017; 32:3457-3461. [PMID: 28676374 DOI: 10.1016/j.arth.2017.06.018] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/01/2017] [Revised: 04/26/2017] [Accepted: 06/08/2017] [Indexed: 02/01/2023] Open
Abstract
BACKGROUND Intraoperative fractures during total hip arthroplasty (THA) are more common when using cementless stems. The purpose of this study was to investigate the impact of a new shorter second-generation cementless, tapered wedge stem with improved proximal femoral fit in reducing the incidence of intraoperative fracture. METHODS A retrospective study was conducted on primary THA cases performed at a single institution using a first-generation or second-generation cementless stem from 2006-2016. All intraoperative femur fractures were identified, as well as early 30-day postoperative periprosthetic femur fractures, which could represent nondisplaced intraoperative fractures that were initially missed. Risk for intraoperative femur fracture was analyzed using logistic regression, accounting for demographic covariates and surgeon. RESULTS Of 6473 primary THA performed with a cementless, tapered wedge stem during the study period, 3126 used a first-generation stem and 3347 used a second-generation stem. The incidence of intraoperative fracture was 1.79% for first-generation stems and 0.24% for second-generation stems, representing a 7.5-fold reduction of risk for fracture. After accounting for covariates, the odds of intraoperative fracture were 0.33 using the second-generation stem relative to the first-generation stem (P = .01). However, there was no significant difference in the odds of early 30-day postoperative fractures using the second-generation stem (odds ratio 0.93, P = .56). CONCLUSION A new second-generation cementless stem resulted in a 7.5-fold decrease in the incidence of intraoperative femur fracture compared with the preceding stem.
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Affiliation(s)
- Andrew N Fleischman
- Department of Orthopaedic Surgery, The Rothman Institute at Thomas Jefferson University, Philadelphia, Pennsylvania
| | - Max M Schubert
- Department of Orthopaedic Surgery, The Rothman Institute at Thomas Jefferson University, Philadelphia, Pennsylvania
| | - Camilo Restrepo
- Department of Orthopaedic Surgery, The Rothman Institute at Thomas Jefferson University, Philadelphia, Pennsylvania
| | - Antonia F Chen
- Department of Orthopaedic Surgery, The Rothman Institute at Thomas Jefferson University, Philadelphia, Pennsylvania
| | - Richard H Rothman
- Department of Orthopaedic Surgery, The Rothman Institute at Thomas Jefferson University, Philadelphia, Pennsylvania
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