To radiographically evaluate the postoperative results of AO 2R3C3 type distal radius fractures treated using the spanning plate technique, associated or not with other fixation methods.

Retrospective observational study that evaluated 14 patients, aged 29 to 80 years, who underwent osteosynthesis, from November 2021 to June 2022. For radiographic measurement, the following parameters were defined: ulnar variance, volar inclination, radial inclination and step articulate.

The mean value of radial inclination was 13.70 degrees, volar inclination was 0.85 degrees, ulnar variance was 0.60mm and joint step was 0.78mm.

Fixation using spanning plate is an excellent alternative in the management of complex fractures of the distal radius. Level of Evidence IV, Case Series.

Dorsal bridge plating (DBP) can effectively treat complex distal radius fractures (DRFs); however, techniques for metacarpal fixation vary. The purpose of our study was to compare range of motion (ROM), grip strength, patient-reported outcomes, radiographic parameters, and complication rates between patients undergoing DBP with fixation to the second versus third metacarpal for DRFs.

We retrospectively analyzed 432 patients with DRFs. Wrist ROM and radiographic data were calculated at the 6-month follow-up. We calculated Patient-Reported Outcomes Measurement Information System (PROMIS) upper-extremity, physical function, and pain interference at each visit. Additional data collected included surgical complications and demographic data. Statistical analysis was conducted via multivariate analysis, t tests, and chi-square tests.

A total of 329 patients underwent DBP to the second metacarpal, whereas 103 patients underwent DBP to the third. Demographics and comorbidities were similar between the groups. Tendon rupture was more common in the third metacarpal group (3.9% vs 0.9%), with two extensor pollicis longus and one extensor indicis proprius ruptures in each group and an unspecified tendon in the third metacarpal cohort. All other complication rates were similar. The second metacarpal group demonstrated greater wrist flexion (57.8° vs 56.2°), ulnar deviation (23.9° vs 20.7°), and grip strength (62.3% vs 57.8%). All other ROM measurements were similar. There was no difference in PROMIS metrics at the 6-month follow-up. The second metacarpal group demonstrated greater radial inclination (21.3° vs 19.5°) and less volar tilt (6.8° vs 7.1°).

Dorsal bridge plating to the second metacarpal demonstrated greater ROM, grip strength, and radial inclination, similar PROMIS scores, and lower extensor tendon rupture rates than third metacarpal fixation. Although there were differences between techniques, their clinical relevance is unclear. Dorsal bridge plating to the second or third metacarpal both result in acceptable outcomes and can be considered based on the fracture pattern and surgeon preference.

Therapeutic IV.

Previous studies evaluating weight bearing of distal radius fractures treated through dorsal spanning bridge plates used extra-articular fracture models, and have not evaluated the role of supplementary fixation. We hypothesized that supplementary fixation with a spanning dorsal bridge plate for an intra-articular wrist fracture would decrease the displacement of individual articular pieces with cyclic axial loading and allow for walker or crutch weight bearing.

Thirty cadaveric forearms were matched into 3 cohorts, controlling for age, sex, and bone mineral density. An intra-articular fracture model was fixed with the following 3 techniques: (1) cohort A with a dorsal bridge plate, (2) cohort B with a dorsal bridge plate and two 1.6-mm k-wires, and (3) cohort C with a dorsal bridge plate and a radial pin plate. Specimens were axially loaded cyclically with escalating weights consistent with walker and crutch weight-bearing with failure defined as 2-mm displacement.

No specimens failed at 2- or 5-kg weights, but cohort A had significantly more displacement at these weights compared with cohort B. Cohort A had significantly more failure than cohort C. Both cohort A and cohort B had significantly more displacement at crutch weight bearing compared with cohort C. The supplementary fixation group had significantly lower displacement at crutch weight-bearing compared with cohort A in all gaps. Survival curves demonstrated the fixation cohort to survive higher loads than the nonfixation group.

There was significantly less displacement and less failure of intra-articular distal radius fractures treated with a spanning dorsal bridge plate and supplementary fixation. Our model showed that either type of fixation was superior to the nonfixation group.

When considering early weight-bearing for intra-articular distal radius fractures treated with a spanning dorsal bridge plate, supplementary fixation may be considered as an augmentation to prevent fracture displacement.

Total wrist arthroplasty (TWA) is indicated in select low demand patients with pan-carpal arthritis to decrease pain and preserve motion. Complications of TWA are well described including aseptic loosening, superficial and deep infection, wound issues, component dislocation, stiffness, and both intraoperative and post-operative fracture. With 4th generation implant designs, the incidence of many of these complications have decreased, but these complications remain challenging to address. In particular, sparse literature is available for the treatment of periprosthetic radius fractures after TWA. This report describes the management of an open, periprosthetic distal third radius fracture 18 months after index TWA in a medically complex 53-year-old female with lag screw fixation and a dorsal wrist spanning plate (DSP).

Our objective was to determine if patients with a distal radius fracture and concomitant lower-extremity fracture benefit from bridge plating when compared with volar plating.

We conducted a retrospective cohort study evaluating distal radius fractures fixated by bridge or volar plating in orthopedic trauma patients with a concomitant lower-extremity fracture. Patients were prescribed a platform walker and followed for gait aid use and both upper and lower-extremity fracture-related outcomes.

Differences in platform walker use, radiographic findings, and rates of complications for both distal radius and lower-extremity fractures were comparable between groups.

Although more studies are needed, it appears that this cohort of patient's ability to mobilize using a gait aid is similar, regardless of the distal radius fracture fixation method. A concomitant lower-extremity fracture should not necessarily indicate bridge plating over volar plate fixation.

Therapeutic Study IV.

Distal radius fractures are the most common upper limb fractures in adults (up to 18% of all fractures in the Emergency Department). Conservative management is possible for the majority, the preferred surgical technique being volar plate fixation. Dorsal bridge plating (DBP) is an alternative method of treatment for complex fractures. DBP acts as an internal fixator and can be used in patients needing early rehabilitation. This systematic review assesses the demographics, functional and radiological outcomes and complications of using DBP in patients with distal radius fractures compared to volar plate fixation.

A literature search of PubMed, Cochrane, EMBASE and Google Scholar was performed according to PRISMA guidelines. Seven hundred and sixty-one articles were found; 11 articles met the inclusion criteria. Cadaveric studies and case studies of less than five patients were excluded. Primary outcome measures were functional and radiological outcomes. Complications were recorded as secondary outcomes.

Three hundred and ninety-four patients were included in the study with an average age of 54.8 years (53.9% male and 46.1% female). Weighted mean follow-up was 55.2 weeks; the mean time to plate removal was 17.3 weeks with a mean DASH score of 25.7. The weighted range of movement was 46.9° flexion, 48.8° extension, 68.4° pronation and 67.5° supination. The radiological parameters show satisfactory outcomes with a mean radial height of 10mm, volar tilt of 3.1°, ulnar variance of 0.5mm and radial inclination of 18.8°. The complication rate was 11.4%. Digital stiffness was the most common complication but improved if tenolysis was performed at plate removal.

DBP is a good alternative to volar plating for complex distal radius fractures. The functional outcomes showed a slight loss of range of movement, whereas the radiological outcomes were within recommended limits. A significant disadvantage of the plate is the need for further surgical removal.

There are numerous internal fixation (IF) options available for distal radius fractures (DRFs). The choice of fixation method depends on factors such as fracture morphology, soft tissue integrity, the patient's clinical status, and the surgeon's training. While volar plate fixation has become the primary approach for addressing these fractures, alternative IF methods like K-wire fixation, fragment-specific fixation, and dorsal bridge plating continue to be effective. Despite the versatility of IF, there are certain clinical situations where prompt and conclusive management through open reduction and internal fixation (ORIF) is not suitable. These instances include the treatment of polytraumatized patients, individuals with compromised soft tissues, or those medically unstable to tolerate lengthy anesthesia. In such cases, proficiency in closed reduction and external fixation (EF) proves invaluable. Being able to identify these clinical scenarios and comprehend the efficacy and safety of EF in addressing DRFs is valuable for any surgeon handling such injuries.

To compare the biomechanical properties of adjunctive dorsal spanning plate (DSP) fixation with traditional K-wire fixation of perilunate dislocations in a cadaveric model.

Fourteen fresh-frozen cadaveric wrists underwent simulated perilunate injury. The specimens were randomly allocated to either K-wire fixation versus K-wire and DSP fixation. Scapholunate (SL) ligament repair was performed in all specimens. The constructs were tested using a robot cyclically and to failure. Fluoroscopic images were obtained of the specimens prior to simulated injury, after fixation, after 10 and 100 loading cycles, and at construct failure. Differences in carpal alignment parameters (SL interval, SL angle, lunotriquetral interval, and capitolunate angle) and load to failure were recorded.

There were no statistically significant differences between the two group's carpal alignment parameters after fixation. Specimens fixated with K-wires and DSP required significantly higher loads to achieve construct failure. The only significant difference between the two groups' carpal alignment parameters was SL interval change at failure.

Compared with K-wire fixation alone, adjunctive DSP fixation resulted in significantly increased loads to failure and decreased change in SL interval at the time of failure.

Adjunctive DSP may be a useful technique in the polytraumatized patient in whom providing back a weight-bearing extremity may be advantageous in the rehabilitation process.

Comminuted, markedly displaced distal radius fractures can cause instability requiring advanced stabilization with dorsal bridge plating. However, published complication rates of bridge plating widely vary. We hypothesize that complications of bridge plating of distal radius fractures are more prevalent than published rates.

A retrospective review was performed on all patients at an academic level I trauma center treated with a bridge plate for a distal radius fracture from 2014 to 2022.

Sixty-five wrists were included in the final analysis: average age 53 years, male 51%, average plate retention 4 months, and average follow-up 6 months. Carpal tunnel release (CTR) was performed at time of primary procedure in 7 (10%) cases. Radial height, radial inclination, dorsal tilt, and ulnar variance were all significantly improved (P < .001). Grip strength, flexion, extension, and supination were significantly limited (P < .03). Twenty-one patients (32%) developed 35 major complications requiring unplanned reoperation, including mechanical hardware-related complication (15%), deep infection (11%), nonunion/delayed union (9%), adhesions (6%), median neuropathy (6%), symptomatic arthritis (5%), and tendon rupture (2%). Plate breakage occurred in 3 patients (5%) and was always localized over the central drill holes of the bridge plate.

Major complications for bridge plating of distal radius fractures were higher at our institution than previously published. Plate breakage should prompt reconsideration of plate design to avoid drill holes over the wrist joint. Signs and symptoms of carpal tunnel syndrome should be carefully assessed at initial presentation, and consideration for concomitant CTR should be strongly considered.

Background  Dorsal bridge plating (DP) of the distal radius is used as a definitive method of stabilization in complex fracture configurations and polytrauma patients. Questions/Purposes  This review aims to summarize the current understanding of DP and evaluate surgical outcomes. Methods  Four databases were searched following the Preferred Reporting Items for Systematic Review and Meta-Analyses guidelines and registered with PROSPERO. Papers presenting outcome or complication data for DP were included. These were reviewed using the National Institutes of Health Quality Assessment and Methodological Index for Non-Randomised Studies tools. Results were collated and compared to a local cohort of DP patients. Results  Literature review identified 416 patients with a pooled complication rate of 17% requiring additional intervention. The most prevalent complications were infection/wound healing issues, arthrosis, and hardware failure. Average range of motion was flexion 46.5 degrees, extension 50.7 degrees, ulnar deviation 21.4 degrees, radial deviation 17.3 degrees, pronation 75.8 degrees, and supination 72.9 degrees. On average, DP removal occurred at 3.8 months. Quality assessment showed varied results. There were 19 cases in our local cohort. Ten displayed similar results to the systematic review in terms of range of motion and radiographic parameters. Higher QuickDASH scores and complication rates were noted. Local DP showed earlier plate removal at 2.9 months compared to previous studies. Conclusion  DP is a valid and useful technique for treating complex distal radius fractures. It displays a lower risk of infection and pain compared to external fixation which is commonly used to treat similar injuries. Patients can recover well following treatment both in function and range of motion. Further high-quality studies are required to fully evaluate the technique.

The dorsal spanning plate (DSP) is a versatile implant suitable for bridging severely comminuted intraarticular distal radius fractures [AO (Arbeitsgemeinschaft für Osteosynthesefragen) 23-C.1-C.3]. It may be used alone or with supplemental fixation such as a volar locking plate (VLP) or fragment-specific fixation (FSF). Outcomes following DSP fixation with additional implants have not been specifically evaluated.

We retrospectively reviewed consecutive patients who underwent internal fixation of a distal radius fracture by a single surgeon from 2017 to 2021. Patients were grouped according to implants used: DSP only, DSP + FSF, and DSP + VLP. Preoperative variables, treatment times, and wrist range of motion (ROM) were assessed. Functional wrist ROM was defined as minimum 80° combined flexion and extension.

One hundred fifty-two patients underwent surgery for wrist fracture, 33 of them were treated with a DSP: 8 DSP only, 6 DSP + VLP, and 19 DSP + FSF. Falls from height greater than 10 ft accounted for 52% of injuries, most of which were treated with a DSP + FSF. Treatment times and ROM were similar between subgroups. Wrist ROM did not improve significantly beyond 4 weeks following DSP removal. Overall, DSP patients recovered a mean wrist ROM of 85° (range 0°-130°) within a median 26 weeks total treatment period (range 12-68 weeks).

Regardless of the construct used, if the distal radius articular surface is well reduced and other principles of fracture fixation are applied, most patients treated with a DSP can expect to regain functional wrist ROM.

Level IV-Retrospective review of prospectively collected data.

In this report, we detail a 69-year-old female who sustained a comminuted intra-articular left distal radius fracture that failed to heal with bridge plate fixation. Given the patient's poor subchondral bone stock and refusal of bone autograft, we designed a construct using a dorsal spanning plate and an intramedullary fragment-specific plate as a volarly placed strut in combination with viable bone allograft and cancellous bone chips to treat this nonunion. This case demonstrates an option for distal radius non-union treatment and highlights the importance of ingenuity that orthopedic surgeons should demonstrate when trying to accommodate patients' wishes.

Distal radius fractures (DRFs) indicated for operative intervention are most commonly treated with volar-locked plating (VLP); however, dorsal bridge plating (DBP) has been used as an alternative fixation method. The purpose of this study was to use a propensity score to match and compare the radiographic and clinical outcomes of patients undergoing isolated VLP or DBP for DRFs.

We performed a retrospective, propensity score-matched analysis of patients undergoing isolated VLP or DBP treatment for isolated DRFs from 2015 to 2022 at a single level-1 trauma center. Patients were propensity score-matched by a total of eight demographic and comorbidity factors, AO Foundation/Orthopedic Trauma Association classification, and preoperative Patient-Reported Outcomes Measurement Information System (PROMIS) scores. Our primary outcomes included postoperative complications, wrist and forearm range of motion (ROM), grip strength, and radiographic measurements, including radial height, radial inclination, volar tilt, and articular step-off.

Overall, 415 DBP and 2075 VLP were successfully propensity score-matched and included in this study. Grip strength and ROM measurements at the 6-month follow-up, including wrist flexion, wrist extension, forearm pronation, forearm supination, radial deviation, and ulnar deviation, were increased in the VLP compared with DBP (P < .05). Complication rates among both the groups were relatively low; however, the rates of malunion and nonunion were significantly higher among the DBP group (P < .05). Radial height, radial inclination, and articular step-off were improved in the VLP group compared with the DBP group (P < .05); however, volar tilt was similar between groups. PROMIS upper extremity and physical function were significantly higher among the VLP group (P < .05). No significant difference was noted in PROMIS pain interference between the groups.

When compared with DBP, patients undergoing VLP are more likely to have improved clinical and radiographic outcomes. Although improvement in wrist and forearm ROM and radiographic parameters is statistically significant, it may not be clinically relevant.

Therapeutic III.

Background Many distal radius fractures are treated with a volar locking plate, but a minority undergo dorsal bridge plate fixation. This study's primary purpose was to compare therapy utilization following distal radius fractures treated with traditional open reduction and internal fixation (ORIF) versus dorsal bridge plate fixation. Secondary outcomes were time to first and last therapy visits and therapy costs. Methods Patients over 18 years old who underwent distal radius ORIF between January 2021 and August 2022 at a single regional orthopedic practice were identified. Patients who underwent post-operative hardware removal were retrospectively reviewed to identify dorsal bridge plate fixation patients. This resulted in "traditional ORIF" and "dorsal bridge plate" groups. Therapy visit number, cost, and payor (insurance type including Medicare, private insurance, worker's compensation, automobile policy, and private pay) were collected. Results In total, 1,376 patients met the inclusion criteria. Of these, 713 of the 1,283 (55.6%) patients in the traditional ORIF group and 25 of the 44 patients (56.8%) in the dorsal bridge plate group attended therapy at our institution. Traditional ORIF and dorsal bridge plate patients averaged 12.6(±10) and 24(±18.7) therapy visits in the one-year following ORIF, respectively. Time to last therapy visit was 90.9(±60) and 175.2(±72.1) days in the traditional ORIF and dorsal bridge plate groups, respectively. Total therapy cost was $1,219(±$1,314) and $2,015(±$1,828) in the traditional ORIF and dorsal bridge plate groups with similar out-of-pocket costs. Conclusions Dorsal bridge plate fixation patients attended a greater number of therapy sessions, had a longer time from surgery until therapy end, and had a higher therapy total cost relative to traditional ORIF, but both groups had similar patient out-of-pocket therapy costs.

Dorsal wrist-spanning plate fixation for comminuted, intra-articular distal radius fractures involves the indirect reduction of intra-articular fractures via ligamentotaxis. The reduction is maintained by application of a bridge plate from the radial diaphysis to either the second or third metacarpal. The objective of this study was to retrospectively compare radiographic outcomes between distal radius fractures managed with bridge plate fixation to the second versus third metacarpal.

A single-institution retrospective review identified 50 cases of distal radius fractures that underwent dorsal wrist-spanning plate fixation, with 9 and 41 fractures undergoing fixation to the second and third metacarpals, respectively. Radiographic parameters, such as radial height, radial inclination, volar tilt, and ulnar variance, were measured at 3 time points: immediately after surgery, immediately prior to elective plate removal, and at the final follow-up. Radiographic measurements of the 2 cohorts were compared at the 3 time points.

Final radiographs showed an average radial height of 8.9 mm versus 9.4 mm for the second versus third metacarpal cohorts, respectively; average radial inclination of 17.4° for both the second and third metacarpal cohorts; average volar tilt of 1.9° versus 1.7° for the second versus third metacarpal cohorts, respectively; and an average ulnar variance of +0.6 mm versus +0.1 mm for the second versus third metacarpal cohorts, respectively. Radiographic parameters of the second and third metacarpal cohorts were similar across all the time points. Additionally, evaluation of the radiographic parameters across the 3 time points (immediately after surgery, immediately prior to elective plate removal, and at the final follow-up) demonstrated little to no loss of radiographic alignment.

Radiographic outcomes for distal radius fractures managed with bridge plate fixation to the second versus third metacarpal appear similar. The distal plate fixation site can likely be determined on the basis of fracture anatomy and patient-specific features.

Therapeutic IV.

Background External fixators that span the wrist have been the historical norm in treating distal radius fractures. We have modified a dorsal distraction approach by using a subcutaneously applied locked bridge plate through two small incisions superficial to the extensor tendons and outside the extensor compartment. The purpose of this study was to biomechanically evaluate this modified method of fixation for comminuted distal radius fractures in comparison with two established constructs. Methods Matched cadaver specimens were used to model an AO Type 23-C3 distal radius fracture. Biochemical testing for stiffness during axial compressive loading was done on three constructs: a conventional Burke distraction plate, the subcutaneous internal fixation plating technique, and an external fixator. All specimens were cyclically loaded for 3000 cycles and then retested. Results The modified construct was found to be stiffer than the external fixator (p=0.013). When compared to the Burke plate, the modified construct was significantly less stiff before axial cycling (p=0.025). However, the difference was not maintained after cycling, and the post-axial loading stiffness difference was non-significant (p=0.456). Conclusion Our data demonstrate the biomechanical integrity of the subcutaneous plating technique for the fixation of comminuted distal radius fractures. It is stiffer than an external fixator and has the theoretical advantage of avoiding pin-tract infections. In addition, it is subcutaneous and not a cumbersome external construct. Our construct is minimally invasive, and it does not violate the dorsal extensor compartments. This allows for finger movement even while the construct is in place.

Radiocarpal dislocations are rare but potentially devastating injuries. Poorer outcomes are associated with inadequate or lost reduction, such as ulnar translocation, but no consensus exists on the ideal fixation technique. Dorsal bridge plate fixation has been described for various settings in the treatment of complex distal radius fractures and can be fixed distally to the second or third metacarpal, but its application for radiocarpal dislocations has not been established.

To determine whether distal fixation to the second or third metacarpal matters.

Using a cadaveric radiocarpal dislocation model, the effect of distal fixation was studied in two stages: (1) A pilot study that investigated the effect of distal fixation alone; and (2) a more refined study that investigated the effect of described techniques for distal and proximal fixation. Radiographs were measured in various parameters to determine the quality of the reduction achieved.

The pilot study found that focusing on distal fixation alone without changing proximal fixation results in ulnar translocation and volar subluxation when fixing distally to the second metacarpal compared with the third. The second iteration demonstrated that anatomic alignment in coronal and sagittal planes could be achieved with each technique.

In a cadaveric radiocarpal dislocation model, anatomic alignment can be maintained with bridge plate fixation to the second metacarpal or the third metacarpal if the described technique is followed. When considering dorsal bridge plate fixation for radiocarpal dislocations, the surgeon is encouraged to understand the nuances of different fixation techniques and how implant design features may influence proximal placement.

We report a case in which distraction plating was performed for bilateral highly comminuted distal radius fractures. The upper extremities' range of motion and function was acceptable. Thus, distraction plating can be a good option for relatively young patients with severe comminution of the radius and soft tissue damage.

Distal radius fractures are common and treatment of complex fracture pattens can be challenging. We assessed functional outcomes, radiographic analysis, and complications of 26 distal radius fractures treated with dorsal bridging plate (DBP) at a mean of 14 months post plate removal (6-34 months). Radiographic parameters were measured pre- and post-operatively and patient reported wrist evaluation scores, patient reported wrist range of movement and satisfaction scores. Mean post-operative total PRWE was 26 (range 0-76) and mean wrist mobility 52° flexion (range 10°-85°) and 50° extension (range 10°-85°). Mean post-operative patient satisfaction score was 89% (range 50-100%). Four patients developed complications (one EPL rupture and three developed CRPS). DBP can reliably restore distal radius anatomy and is associated with good functional outcome scores, return of functional range of wrist movement and high levels of patient satisfaction.

III.

The aim of this retrospective study was to evaluate the medium-term clinical and functional outcomes of patients with closed, displaced, and unstable, simple or complex, intra- and extra-articular distal radius fractures (DRFs) treated with a bridging external fixator (BEF) and optional K-wires (KWs). AO classification was used to differentiate the injuries radiographically. Clinical-functional outcomes were evaluated using the Patient-Rated Wrist and Hand Evaluation Score (PRWHE Score) and the Quick Disabilities of the Arm Shoulder and Hand Score (QuickDASH). A total of 269 dorsally displaced fractures of 202 female (75%) and 67 male subjects (25%) were included, with a mean follow-up of 58.0 months. Seventy-five patients (28%) were treated by additional KWs. No differences were found comparing the two groups of patients (BEF vs. BEF + KWs) regarding age, sex, and fracture side (dominant vs. non-dominant). PRWHE and QuickDASH scores were lower in the BEF + KWs group compared to the BEF group (p < 0.0001 and p = 0.0007, respectively). Thus, patients treated with KWs had a better clinical outcome. Beta multivariate regression analysis confirmed that patients of the BEF + KWs group exhibited a better PRWHE score but not a better QuickDASH score. Patients treated by the BEF + KWs with the fracture on the dominant site were characterised by better clinical outcomes. Older patients had a better PRWHE score independently from the treatment. Our findings suggest that the use of BEF for DRFs with optional KWs can be indicated in both young and elderly patients of any gender, independent of limb side and fracture pattern. As the best functional results were achieved in the elderly when KWs were added, the combination of BEF and KWs seems to be mainly indicated for the treatment of DRF, also complex, in the elderly population.

The fixation of comminuted distal radius fractures using wrist-spanning dorsal bridge plates has been shown to have good postoperative results. We hypothesized that using a stiffer bridge plate construct results in less fracture deformation with loads required for immediate crutch weight bearing.

We created a comminuted, extra-articular fracture in 7 cadaveric radii, which were fixed using dorsal bridge plates. The specimens were positioned to simulate crutch/walker weight bearing and axially loaded to failure. The axial load and mode of failure were measured using 2- and 5-mm osteotomy deformations as cutoffs. Bearing 50% and 22% of the body weight was representative of the force transmitted through crutch and walker weight bearing, respectively.

The load to failure at 2-mm deformation was greater than 22% body weight for 2 of 7 specimens and greater than 50% for 1 of 7 specimens. The load to failure at 5-mm deformation was greater than 22% body weight for 6 of 7 specimens and greater than 50% for 4 of 7 specimens. The mean load to failure at 2-mm gap deformation was significantly lower than 50% body weight (110.4 N vs 339.2 N). The mean load to failure at 5-mm deformation was significantly greater than 22% body weight (351.8 N vs 149.2 N). All constructs ultimately failed through plate bending.

All constructs failed by plate bending at forces not significantly greater than the 50% body weight force required for full crutch weight bearing. The bridge plates supported forces significantly greater than the 22% body weight required for walker weight bearing 6 of 7 times when 5 mm of deformation was used as the failure cutoff.

Elderly, walker-dependent patients may be able to use their walker as tolerated immediately after dorsal bridge plate fixation for extra-articular fractures. However, patients should not be allowed to bear full weight using crutches immediately after bridge plating.

Distal radius fractures are among the most commonly encountered injuries treated by orthopedic surgeons. The incidence of distal radius fractures appears to be on the rise. Although this injury is usually treated nonoperatively, surgical management is often indicated and involves several options, including percutaneous pinning, fragment-specific fixation, volar/dorsal/radial locked plating, intramedullary fixation, and external fixation. More recently, dorsal spanning bridge plating has been introduced for certain fracture patterns and patient circumstances. This article reviews the indications, surgical techniques, outcomes, and potential complications associated with bridge plating of distal radius fractures. The authors believe that this article will familiarize surgeons with an additional surgical technique that can be used to treat complex presentations of a common orthopedic injury. [Orthopedics. 2021;44(4):e620-e625.].

Distal radius fractures are some of the most common fractures treated by the orthopaedic surgeon. There are a variety of methods of fixation to treat these fractures; however, in patients with polytrauma and in high-energy fracture patterns, fixation options can be limited. In the past, these fractures were treated with plaster, Kirschner wires, or external fixators that were fraught with complications. The dorsal spanning plate is an excellent option in the treatment of high-energy fractures and patients with polytrauma, fractures with dorsal or volar comminution, fracture dislocations, and shear injuries, and in geriatric patients with poor bone quality. The dorsal spanning plate not only allows for fixation of these complex fractures but also allows for weight-bearing through the wrist, an advantage for patients with concomitant lower extremity fractures and geriatric patients who need mobility aides. Understanding the risks and benefits of dorsal spanning plates and their use for the treatment of polytraumatized patient is a vital base of knowledge for the orthopaedic traumatologist.

This study presents patient demographics, injury characteristics, outcomes, and complications associated with dorsal bridge plating (DBP) in the treatment of distal radius fractures.

A literature search performed according to Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA) guidelines identified 206 articles, 12 of which met inclusion criteria, accounting for 310 patients. Included articles contained the results of DBP for treatment of distal radius fractures with reported outcomes between 1988 and 2018. Data were pooled and analyzed focusing on patient demographics, as well as 3 primary outcomes of complications, range of motion (ROM), and Disabilities of the Arm, Shoulder, and Hand (DASH) and QuickDASH scores.

Average age was 55 years, median follow-up was 24 months, and the most common use was in comminuted (92%) intra-articular (92%) distal radius fracture caused by fall (58%), or motor vehicle collision or motorcycle collision (27%). A minority of patients had open fractures (16%) and most were cases of polytrauma (65%). Median time from placement to DBP removal was 17 weeks (mean, 119 days). At final follow-up, mean wrist ROM was 45° flexion, 50° extension, 75° pronation, and 73° supination. Mean DASH score was 26.1, and mean QuickDASH score was 19.8. The overall rate for any complication was 13%; the most common was hardware failure (3%) followed by symptomatic malunion or nonunion (3%), and persistent pain after hardware removal (2%).

Dorsal bridge plating was found to be used most commonly in intra-articular, comminuted distal radius fractures with overall functional wrist ROM, moderate patient-reported disability, and a 13% complication rate at follow-up.

Therapeutic IV.

Minimal invasive temporary spanning plate (SP) fixation of the wrist has been described as an alternative treatment method in complex distal radius fractures (DRFs). The purpose of this study is to conduct an outcome analysis of all consecutive DRFs treated by SP fixation representing the so far largest published patient cohort outside the United States.

Indication for SP fixation include DRFs with severe metaphyseal comminution, radiocarpal fracture dislocations with concomitant ligamentous injuries and very distal intra-articular fractures lacking the possibility of adequate plate anchoring. All consecutive patients undergoing SP fixation of DRFs were prospectively included in a single level I trauma centre between 01/01/2018 and 31/12/2020. For functional and patient-rated outcome analysis only patients who completed the 12 month follow-up were included.

In the mentioned timeframe, a total of 562 DRFs were treated operatively of which 28 underwent SP fixation. Average age was 58.1 years (range 22-95 years). The fracture type ranged from AO/OTA type B1.1 to C3.3 and included 8 fracture dislocations. SP removal was performed on average 3.7 months after the initial operation (range 1.4-6.5 months). Twenty-five patients completed the 12 month follow-up (mean 14.5 months, range 12-24). Radiological evidence of fracture healing appeared on average 9.9 weeks (range 5-28 weeks) after the initial operation. One patient experienced asymptomatic non-union. Mean radial inclination, volar tilt and ulnar variance at 1 year were all within the acceptable limit predictive of symptomatic malunion. Complications included two patients with tendon rupture and one patient with extensor tendon adhesions needing tenolysis at the time of plate removal leaving an overall complication rate of 12%. There was no implant failure and no infection. Mean satisfaction score was 8.3 (range 4-10) and mean visual analogue scale for resting pain was 0.8 (range 0-5). The mean PRWE score was 17.9 (range 0-59.5) and the mean DASH score was 16.6 (range 0-60.8). Grip strength averaged 23 kg (range 4-74 kg) amounting to 68% of the opposite side. Range of motion regarding the extension/flexion, radial/ulnar abduction and pronation/supination arc reached 72%, 77% and 95% compared to the unaffected side, respectively.

The radiological, functional and patient-rated outcomes in this study are remarkably good considering the complexity of the included fractures. Therefore, this method represents a valuable alternative for the treatment of complex DRFs in selected patients.

Background  Spanning plates are being increasingly used for the treatment of complex fractures of the distal radius. The traditional recommendation is to leave the hardware in place for at least 12 weeks. Questions/Purpose  This study assesses the comparative outcomes of spanning plates removed at or before 10 weeks. We hypothesized that acceptable healing and functional outcomes can be achieved with earlier hardware removal to allow for earlier range of motion, rehabilitation, and return to function. Patients and Methods  All patients treated for a comminuted, intra-articular distal radius fracture with a temporary spanning plate were identified. Outcomes of bridge plates removed before 10 weeks were compared with plates removed after 12 weeks. Twenty patients in the short duration cohort were compared with 40 patients in the long duration cohort. Results  All fractures healed and there were 10 complications (4 short duration, 6 long duration) and 2 reoperations (1 short duration, 1 long duration) in the study population. There were no significant differences in final Quick-DASH scores (27.4 short duration, 20.9 long duration) or radiographic alignment. Mean values for wrist extension and ulnar deviation were significantly worse in the long duration cohort, although these differences are of unclear clinical significance. Conclusion  It may be safe to remove spanning bridge plates earlier than what is traditionally recommended. Plate removal at or before 10 weeks did not detract from healing or radiographic alignment. Prospective investigations assessing the optimal duration of fixation for this technique are needed. Level of Evidence  This is a Level IV study.

There are several options for plate fixation of distal radius fractures. Volar plating has broad applicability and consistent outcomes, and thus is the most commonly used plate type. Dorsal plates are advantageous for specific fracture patterns, and can provide direct fracture reduction and buttressing, but may be prominent and can cause tendon irritation. Bridge plates offer an alternative to external fixation while avoiding the complications with prominent hardware, because they span highly comminuted fractures and can be used for immediate weight bearing; however, they require plate removal. Choice of plate fixation should depend on fracture type, patient factors, and surgeon experience.

Temporary spanning plate fixation of the wrist has been described as an alternative treatment method for complex distal radius fractures (DRfs). This systematic review aims to gain insight on clinical and radiological outcomes of this technique currently published in literature.

A comprehensive literature search of Pubmed, Embase, CENTRAL and CINAHL databases was conducted on November 5th 2020. All studies reporting on complications, functional, patient-rated and radiological outcomes of temporary spanning plate wrist fixation of DRFs in adult patients were included.

Two prospective and eight retrospective cohort studies were included encompassing 353 patients with of 357 DRFs. The overall mean age was 53 years (range 19-95 years). Overall mean follow-up ranged from 6 months to 8.8 years. The union rate was 99.4%. Plate removal was performed on average 4.5 months after initial operation (range 1.1-28.9 months). The most frequently reported complication was implant failure with an incidence of 3.1%. Mean flexion/extension, pronation/supination and radial/ulnar inclination arc averaged 96.6°, 151.5° and 36.5°, respectively. Grip strength averaged 79.7% of the contralateral side. Mean DASH and PRWE scores were 22.9 and 16 points, respectively. Radiological indices were all within the acceptable limits.

Temporary spanning plate wrist fixation is a safe method for the treatment of complex DRFs. This technique can exploit the advantages of temporary wrist immobilization without the disadvantages of external fixation. With these aspects in mind, the spanning plate can serve as a valuable tool in the treatment of complex intra-articular DRFs.

In complex distal radius fractures (DRF), both direct osteosynthesis (one-stage approach) and temporary external fixation as a bridge to definitive osteosynthesis (two-stage approach) are used. Studies directly comparing these two management options are lacking. This study aims to compare the two procedures with regard to complications, and radiological and functional outcomes.

This prospective observational study included all patients presenting with AO OTA C2 or C3 DRF (1) between January 2011 and January 2018. All patients were categorised into two groups according to received treatment: patients who underwent direct definitive osteosynthesis (Group One Stage) and patients who received an external fixator followed by definitive fixation (Group Two Stage). Primary outcome was the Patient-Rated Wrist Evaluation score (PRWE) measured at 1 year follow-up. Secondary outcomes included complications, range of motion (ROM), and radiologic parameters (ulnar variance, radial inclination and volar tilt).

A total of 187 patients were included in Group One Stage with a mean age of 55.6 years (SD 17.2), of which 67 had a C2 and 120 a C3 fracture. Group Two Stage consisted of 66 patients with a mean age of 53.7 years (SD 20.4 years), of which 6 patients having a C2 and 60 a C3 fracture. There was no significant difference in complications and median PRWE between Group One Stage (12.0, IQR 2.0-20.0) and Group Two Stage (12.2, IQR 5.5-23.4) (p = 0.189), even after correction for differences in baseline characteristics. The ROM and radiologic parameters did not show any significant differences as well.

No differences were found in clinical, functional, and radiological outcome between one- and two-staged surgical techniques. It may be concluded that a two-stage approach is a viable and safe alternative.

This review explores minimally invasive surgical techniques for distal radius fractures and guides their use in conjunction with, or as an alternative to, volar locked plating.

Fractures of the lunate facet, die-punch fractures, and marginal articular shear injuries present challenges that cannot be easily addressed with volar plating. The use of external fixation, Kirschner wires, and dorsal bridge plating should all be considered. These techniques, in combination and in addition to volar locked plating, continue to play an important role in fracture management. Arthroscopically assisted surgery with minimally invasive fixation allows for detailed inspection of the radiocarpal joint. Closed treatment and casting continue to play an important role in distal radius fracture care. The role of minimally invasive surgery for distal radius fractures is still being defined. While fixation using a volar locking plate is by far the most common treatment method, other techniques should be considered to improve outcomes and decrease complications.

Background  Bridge plating for distal radius fractures is indicated for complex fractures with comminution, extensive articular involvement, and/or cases requiring immediate weight bearing. Bridge plate fixation of distal radius fractures is a well-documented treatment method; however, failures have been reported with repetitive loading through the bridged distal radius fracture. Plate design is implicated as a cause of plate fracture in select clinical studies but few mechanical tests comparing bridge plate designs have been reported. This study sought to determine the impact of plate design on bridge plates intended to allow for immediate weight-bearing. Methods  Axial static ( n  = 3) and dynamic testing ( n  = 3) was performed on three distraction plates designs: bridge plate 1 (BP1) with central holes, bridge plate 2 (BP2) without central holes, and locking compression plate (BP3). Plates were loaded in axial compression with a simulated 10-mm fracture gap. Results  Significant static load differences were noted between all groups. Static load to failure for BP1, BP3, and BP2 were 240 ± 5 N, 398 ± 9 N, and 420 ± 3 N, respectively ( p  < 0.05). BP1 was the only plate series that failed during dynamic testing; all other plates achieved 100,000 cycles. Failure mode was a fracture occurring through the central screw hole of BP1. Finite element analysis demonstrated the effects of central screw holes on stress, strain, and plastic deformation under loading. Conclusion  Unused screw holes are the mechanical weak points; plates designed without these central screw holes are expected to survive greater load values. The threshold for clinical importance will need to be determined by future studies.

Minimally invasive temporary internal wrist arthrodesis as an alternative treatment method in complex distal radius fractures.

Complex distal radius fractures with dorsal and/or palmar comminution and little to no reconstruction possibilities, radiocarpal ligamentous injury, need for early weight bearing through the affected wrist (walking aids).

Complex hand injuries limiting the possibility to safely secure the plate at either the metacarpal or the radial shaft.

Percutaneous or open reduction and fixation of the distal radius fracture. Determine the location for the two stab incisions under fluoroscopy; one over the distal radial diaphysis and one over the second or third metacarpal. A third incision over Lister's tubercle allows transposition of the extensor pollicis longus (EPL) tendon, excision of the posterior interosseous nerve and dorsal arthrotomy. Retrograde insertion of the spanning plate. Placement of a first nonlocking screw through the glide hole into the metacarpal shaft. Under traction, a proximal screw hole is filled with a nonlocking screw into the radial diaphysis. Tightening of the cortical screws under lateral fluoroscopic view. The remaining screw holes at both the distal and proximal ends of the plate are filled with locking screws. Layered wound closure.

A removable wrist splint is worn during 2 weeks. Weight bearing through the injured wrist is immediately allowed. Removal of the spanning plate is scheduled at 3 months after radiographic evidence of fracture consolidation.

In total, twelve distal radius fractures were treated by dorsal spanning plate fixation between January 2018 and January 2019. Average age was 53.3 ± 24.5 years (range 22-95 years). Both 3.5 mm and 2.4/2.7 mm plates were used. All twelve fractures were healed after 3 months. The mean Disabilities of Arm, Shoulder and Hand (DASH) score was 36.4 (range 8.3-70.0). There was one EPL tendon rupture, one case with extensor tendon adhesions, one periosteosynthetic fracture of the radial shaft and one complex regional pain syndrome. There was no implant failure and no infection.

Background  External fixation and dorsal bridge plating are wrist spanning fixation options for distal radius fractures; however, their comparative effectiveness is not well understood. A meta-analysis was conducted to compare the clinical outcomes between these two techniques. Materials and Methods  A PubMed database query of all distal radius fracture cases managed with spanning external fixation or dorsal bridge plating was performed. A total of 28 articles met inclusion criteria, yielding 895 patients for data extraction and comparative analysis. Results  Dorsal bridge plating demonstrated lower rates of infection (2 vs. 10%, p  = 0.05) and complex regional pain syndrome (1 vs. 4%, p  = 0.04) but higher rates of hardware failure (4 vs. 1%, p  = 0.026). Bridge plating also demonstrated higher rates of excellent/good ratings under the Gartland and Werley outcome score (91 vs. 83%, p  = 0.016). There was no significant difference in DASH (Disability of the Arm, Shoulder, and Wrist) scores, radiographic parameters, or unplanned reoperations between the two spanning fixation options. Conclusion  Bridge plating and external fixation both appear to be comparable for spanning fixation constructs for distal radius fractures, but with bridge plating having a potentially lower complication profile.

Background: External fixation has been traditionally used to treat comminuted or open distal radius fractures that are not amenable to open reduction internal fixation. This procedure is associated with a relatively high complication rate and has been used with decreasing frequency in recent years. However, trends in external fixation utilization for the treatment of distal radius fractures have not been described. Methods: Using the Nationwide Inpatient Sample, patients with a distal radius fracture treated with external fixation from 2003 to 2014 were identified. The annual incidence was reported, and hospital and demographic variables associated with external fixation use were determined. Results: During the study period, 593 929 patients with a distal radius fracture were identified, of which 51 766 (8.7%) were treated with a wrist-spanning external fixator. Wrist external fixation for the treatment of distal radius fractures declined steadily from 2003 to 2014. In 2003, external fixation use was highest, accounting for 17.4% of distal radius fractures. By 2014, only 4.9% of distal radius fracture were treated with external fixation. During this period, the incidence of distal radius fractures declined by 6.9% while external fixator utilization decreased by 73.7%. Patients receiving an external fixator were more likely to be male, low-income, and treated in a rural, nonteaching, privately owned hospital. Conclusions: External fixator use for the treatment of distal radius fractures steadily declined during the study period. Males and those with lower incomes treated in rural, nonteaching, and privately owned hospitals are more likely to receive external fixation.

Internal radiocarpal distraction plating is a versatile tool in the treatment of distal radius fractures that are not amenable to nonoperative treatment or operative fixation with standard volar or dorsal implants. Internal distraction plates may also be indicated in the setting of polytrauma or osteopenic bone. The plate functions as an internal fixator, using ligamentotaxis to restore length and alignment while providing relative stability for bony healing. The plate can be fixed to either the second or the third metacarpal, and anatomic and biomechanical studies have assessed the strengths and weaknesses of each strategy. This operative fixation technique leads to acceptable radiographic results and functional outcomes. Following fracture union, the plate is removed, and wrist range of motion is resumed.

Multifragmentary fractures of the distal radius with articular and metaphyseal comminution (AO 23-C3) represent challenging injuries to manage. Distal fracture lines, articular comminution, and limited distal bone stock may preclude stable fixation with a volar locking plate. The use of a dorsal spanning plate (DSP) offers an alternative treatment option in this setting. We examined the radiographic outcomes of a consecutive series of patients with comminuted intra-articular distal radius fractures not amenable to volar locked plating, who were treated with a DSP.

We reviewed all distal radius fractures treated with a dorsal spanning plate at our institution between October, 2014 and March, 2018. Patients with AO 23-C3 fractures treated with dorsal spanning plate fixation were included in this study. Demographic data, time from plate placement to removal, and postoperative radiographic outcomes were examined.

We identified 24 patients, mean age 41 years (range, 19-62 years). Mean follow-up was 19.5 weeks (range, 12-35 weeks) from the time of plate placement. Plates were removed at a mean of 87 days (range, 40-215 days) after surgery. All patients achieved radiographic union. Mean radial height at the time of union was 11.1 mm (SD, ±3.7 mm; range, 6-18 mm), radial inclination was 19.7° (SD, ±5.4°; range, 9° to 30°), ulnar variance was 1.0 mm (SD, ±2.4 mm; range, -3 to 6 mm), and volar tilt was 1.4° (SD, ±5.2°; range, -10° to 14°). Mean articular displacement was 1.7 mm (SD, ±1.7 mm; range, 0-6 mm). Malalignment of at least one of these radiographic parameters was identified in 16 of 24 patients at the time of union.

Dorsal spanning plate fixation offers an alternative treatment option for comminuted intra-articular distal radius fractures (AO 23-C3). Although this technique presents a straightforward means for fixation of complex distal radius fractures, radiographic outcomes may be inferior relative to less complex fractures treated with standard volar plating techniques.

Therapeutic IV.

Bridge plate fixation has traditionally been described for the treatment of high-energy distal radius fractures with extensive comminution, associated instability, and polytrauma with the need for immediate upper extremity assisted weight bearing. Certain patient populations who may similarly benefit from such effective and expedient stabilization include patients with multiple comorbidities who may have lower-energy fractures, poor bone quality, and a baseline reliance on ambulatory assist devices. This article reviews treatment considerations for distal radius fractures in low-demand patients and explores the rationale and technique of bridge plate fixation in this population.

Optimal fixation for highly comminuted distal radius fractures remains a major treatment challenge for orthopaedic surgeons. Dorsal distraction plating can serve as an improved fixation technique by allowing reduction under ligamentotaxis, providing a dorsal buttress, addressing proximal comminution, and allowing for early weightbearing in polytrauma patients. The aim of this study was to review current literature regarding treatment of distal radius fractures treated with dorsal distraction plating.

We performed a literature search in Pubmed and EMBASE databases to identify all studies analyzing use of dorsal distraction plating. Case reports, biomechanical and anatomic cadaver studies were excluded from analysis. Primary outcome measures were range of motion (ROM) at final follow up, grip strength, and radiographic parameters.

Eight studies were included in the final analysis. Pooled mean ROM after dorsal distraction plating was found to be 47.6° of flexion, 50.5° of extension, 76.0° of pronation, and 74.2° of supination. Pooled mean grip strength was 79.1% compared to the uninjured contralateral limb. Pooled mean volar tilt was 3.6°. Overall radial height was maintained at an average of 10.5 mm with a pooled mean loss of only 3.8 mm in length. Mean radial inclination was found to be 19.4 mm with patients having a mean ulnar variance of 0.5 mm.

Treatment of comminuted intra-articular distal radius fractures with dorsal distraction plating yielded excellent outcomes with very low complication rates, and has several advantages over volar plating and/or external fixation for these fractures. Necessity of plate removal remains a negative feature of this technique.

Background  Dorsal bridge plate fixation is an effective technique for stabilization of highly comminuted, complex distal radius fractures. However, it is unknown whether fixation to the second or third metacarpal is optimal. Given dorsal bridge plating spans the radiocarpal joint, it is unclear if the dorsal spanning plate affects carpal position. This study investigates differences in carpal translocation resulting from bridge plate distal fixation to either the second or third metacarpal. Methods  Ten paired cadaveric upper extremities without evidence of gross deformity or prior surgery distal to the elbow were evaluated with three-view wrist fluoroscopic images for baseline radiographic measurements. An unstable distal radius fracture model was created via a volar approach using a 1-cm osteotomy. Following fracture creation, a dorsal bridge plate was applied with random to the second metacarpal on one limb, and the third metacarpal on the contralateral limb. Laterality for distal fixation was chosen randomly. Fluoroscopic images were repeated and radial inclination, radial height, radiocarpal angle, volar tilt, ulnar variance, radiolunate angle, radioscaphoid angle, radial rotation index, and carpal translocation were measured. Results  Radial inclination, radial height, radiocarpal angle, volar tilt, ulnar variance, radiolunate angle, and radioscaphoid angle were not statistically different before and after fixation, or when comparing the second or third metacarpal fixation. Additionally, there was no difference in Taleisnik's ulnar translocation index, Chamay's ulnar translation index, or McMurtry's carpal translation index based on which metacarpal was used for distal fixation. Conclusions  Dorsal bridge plate fixation of distal radius fractures restores preoperative physiologic measures of the radius, ulna, and carpus. Carpal translocation was similar when comparing distal fixation to the second or third metacarpal in distal radius fractures stabilized with a bridge plate. Level of Evidence  This is a Level V, therapeutic study.

We performed open reduction and internal fixation using a distraction plate in two cases of elderly patients with highly communited intraarticular open distal radius fractures. There was no corrective loss of intraarticular fracture fragment in either case. The implant was removed in one case because bone union was achieved. The plate was retained in the other case, without the hope of implant removal. Neither case complained of any marked disturbance of activities of daily living (ADL), and there was no pain at the time of the final follow up period. However, there is a high possibility of limitation of the range of motion (ROM) of the wrist after implant removal, therefore we need to judge the indications carefully.

Background: The purpose of this study is to compare radiographic outcomes of patients treated with dorsal spanning plates with previously reported normal values of radiographic distal radius anatomy and compare the results with prior publications for both external fixation and internal fixation with volar locked plates. Methods: Patients with complex distal radius fractures including dorsal marginal impaction pattern necessitating dorsal distraction plating at the discretion of the senior authors (M.A.T. and M.A.I.) from May 30, 2013, to December 29, 2015, were identified and included in the study. Retrospective chart and radiograph review was performed on 19 patients, 11 male and 8 female, with mean age of 47.83 years (22-82). No patients were excluded from the study. Results: All fractures united prior to plate removal. The average time the plate was in place was 80.5 days (49-129). Follow-up radiographs showed average radial inclination of 20.5° (13.2°-25.5°), radial height of 10.7 mm (7.5-14 mm), ulnar variance of -0.3 mm (-2.1 to 3.1 mm), and volar tilt of 7.9° (-3° to 15°). One patient had intra-articular step-off greater than 2 mm. Conclusions: Dorsal distraction plating of complex distal radius fractures yields good radiographic results with minimal complications. In cases of complex distal radius fractures including dorsal marginal impaction where volar plating is not considered adequate, a dorsal distraction plate should be considered as an alternative to external fixation due to reduced risk for infection and better control of volar tilt.

The goal of this study was to compare the biomechanical stability of a 2.4-mm dorsal spanning bridge plate with a volar locking plate (VLP) in a distal radius fracture model, during simulated crutch weight-bearing.

Five paired cadaveric forearms were tested. A 1-cm dorsal wedge osteotomy was created to simulate an unstable distal radius fracture with dorsal comminution. Fractures were fixed with a VLP or a dorsal bridge plate (DBP). Specimens were mounted to a crutch handle, and optical motion-tracking sensors were attached to the proximal and distal segments. Specimens were loaded in compression at 1 mm/s on a servohydraulic test frame until failure, defined as 2 mm of gap site displacement.

The VLP construct was significantly more stable to axial load in a crutch weight-bearing model compared with the DBP plate (VLP: 493 N vs DBP: 332 N). Stiffness was higher in the VLP constructs, but this was not statistically significant (VLP: 51.4 N/mm vs DBP: 32.4 N/mm). With the crutch weight-bearing model, DBP failed consistently with wrist flexion and plate bending, whereas VLP failed with axial compression at the fracture site and dorsal collapse.

Dorsal spanning bridge plating is effective as an internal spanning fixator in treating highly comminuted intra-articular distal radius fracture and prevents axial collapse at the radiocarpal joint. However, bridge plating may not offer advantages in early weight-bearing or transfer in polytrauma patients, with less axial stability in our crutch weight-bearing model compared with volar plating. A stiffer 3.5-mm DBP or use of a DBP construct without the central holes may be considered for distal radius fractures if the goal is early crutch weight-bearing through the injured extremity.

Patients who require assistive devices with their hands for mobilization are called functional quadrupeds. These patients pose a unique challenge after they have a distal radius fracture, as their injury not only limits the wrist but also compromises ambulation. The authors propose a different treatment strategy for functional quadrupeds to improve mobilization and weight-bearing with the injured limb after a distal radius fracture. In this article, the authors define the functional quadruped and describe their technique of spanning bridge plate fixation with a retrospective review of patient outcomes.

To compare the biomechanical properties of second versus third metacarpal distal fixation when using a radiocarpal spanning distraction plate in an unstable distal radius fracture model.

Biomechanical evaluation of the radiocarpal spanning distraction plate comparing second versus third metacarpal distal fixation was performed using a standardized model of an unstable wrist fracture in 10 matched-pair cadaveric specimens. Each fixation construct underwent a controlled cyclic loading protocol in flexion and extension. The resultant displacement and stiffness were calculated at the fracture site. After cyclic loading, each specimen was loaded to failure. The stiffness, maximum displacement, and load to failure were compared between the 2 groups.

Cyclic loading in flexion demonstrated that distal fixation to the third metacarpal resulted in greater stiffness compared with the second metacarpal. There was no significant difference between the 2 groups with regards to maximum displacement at the fracture site in flexion. Cyclic loading in extension demonstrated no significant difference in stiffness or maximum displacement between the 2 groups. The average load to failure was similar for both groups.

Fixation to the third metacarpal resulted in greater stiffness in flexion. All other biomechanical parameters were similar when comparing distal fixation to the second or third metacarpal in distal radius fractures stabilized with a spanning internal distraction plate.

The treating surgeon should choose distal metacarpal fixation primarily based on fracture pattern, alignment, and soft tissue integrity. If a stiffer construct is desired, placement of the radiocarpal spanning plate at the third metacarpal is preferred.

Kienböck disease (KD) is a progressive condition and difficult to manage. A number of treatment algorithms exist but there is no clear consensus as to which method produces the best outcome, particularly for Lichtman stage III disease. The majority of the current treatment options for KD emphasize lunate unloading and restoration of biology with bone graft. However, less attention has been given to the protection of the lunate during revascularization process. We report a novel technique of lunate decompression and bone grafting, combined with wrist distraction with or without radial shortening osteotomy via dorsal wrist bridge plating for the treatment of stage II-IIIa/b KD. This technique provides the advantages of distraction of the carpus unloading the lunate after bone grafting and during revascularization without the issues inherent to external fixation. In addition, this technique allows compression through a radial osteotomy site when performed. Our approach to the treatment of KD has incorporated this technique for patients with stage II or IIIa/b disease.

The management of distal radius fractures differs based on the nature of the fracture and the experience of the surgeon. We hypothesized that patients requiring surgical intervention would undergo different procedures when in the care of a surgeon with subspecialty training in hand surgery as compared with surgeons with no subspecialty training in hand surgery.

We queried the ABOS database for case log information submitted for part II of the ABOS examination. Queries for all codes involved with distal radius fracture management were combined with associated codes for the management of median nerve neuropathy, triangular fibrocartilage complex tears, ulnar shaft, and styloid fractures. Hand fellowship trained orthopedic surgeons were compared with those completing other fellowships and non-fellowship trained orthopedic surgeons during their board collection period.

During the study period, 2,317 orthopedic surgeons reported treatment of 15,433 distal radius fractures. Of these surgeons, 411 had hand fellowship training. On a per surgeon basis, fellowship trained hand surgeons operatively treated more multifragment intra-articular distal radius fractures than their non-hand fellowship trained counterparts (5.3 vs 1.2). Additional procedures associated with the management of distal radius fractures were also associated with the fellowship training of the treating surgeon.

Among orthopedic surgeons taking part II of the ABOS certifying examination, differences exist in the type, management, and reporting of distal radius fractures among surgeons with different areas of fellowship training.

This study describes the association of hand surgery fellowship training on the choice of intervention for distal radius fractures and associated conditions.

Two separate approaches have been described for radiocarpal spanning internal fixation for high-energy distal radius fractures with metaphyseal extension. To our knowledge, relevant anatomic relationships and structures at risk for iatrogenic injury have not been identified in the literature.

Twelve fresh frozen cadaver arms were randomized to fixation with a dorsal radiocarpal spanning plate using one of two techniques: (1) index finger metacarpal fixation (index group) or (2) middle finger metacarpal fixation (middle group). Cadaveric dissection and relevant anatomic relationships were assessed in relation to the plate.

Superficial branches of the radial sensory nerve were in contact with the index group plate in all specimens, while no contact occurred in the middle group specimens. No extensor digitorum comminus (EDC) middle extensor tendons contacted the plate in the index group; an average of 10 cm of plate contact was seen in the middle group. The extensor pollicis longus (EPL) tendon contacted the plate in both the index and middle groups for an average distance of 12.4 and 25.5 mm, respectively. One complication [EPL and extensor indicis proprius (EIP) entrapment] was observed in the middle finger metacarpal group.

Mounting the dorsal bridge plate to the index finger metacarpal places the superficial branches of the radial sensory nerve at risk during dissection, while mounting the plate to the middle finger metacarpal leads to a greater degree of tendon-plate contact.