Outcomes in Arthroplasty Procedures Performed for Femoral Neck Fractures Does Approach Affect Outcome?

BACKGROUND: The surgical approach used for arthroplasty in the setting of hip fracture has traditionally been decided based on surgeon preference. This study analyzed the ef-fect of the surgical approach on hospital quality measures, complications, and mortality in patients treated with hip arthroplasty for fracture fixation. METHODS: A cohort of consecutive acute hip fracture pa-tients who were 60 years of age or older and who underwent hemiarthroplasty (HA) or total hip arthroplasty (THA) at one academic medical center between January 2014 and January 2018 was included. Patient demographics, length of stay (LOS), surgery details, complications, ambulation at dis-charge, discharge location, readmission, and mortality were recorded. Two cohorts were included based on the surgical approach: the anterior-based cohort included the direct an-terior and anterolateral approaches and the posterior-based cohort included direct lateral and posterior approaches. RESULTS: Two hundred five patients were included: 146 underwent HA (81 anterior-based and 65 posterior-based) and 79 underwent THA (37 anterior-based and 42 posterior-based). The mean age of the HA and THA cohorts was 84.1 ± 7.5 and 73.7 ± 8.0 years, respectively. There was no dif-ference in LOS, time to surgery, or surgical time between the two cohorts for HA and THA. There were no differences in perioperative complications, including dislocation, ob-served based on surgical approach. No difference was found between readmission rates and mortality. CONCLUSION: In this cohort of hip fracture arthroplasty patients, there was no difference observed in hospital quality measures, readmission, or mortality in patients based on sur-gical approach. These results are in contrast with literature in elective arthroplasty patients supporting the use of an anterior approach for potential improved short-term outcomes.

Relative contribution of the nail and plate to a nail-plate construct for comminuted distal femoral fractures.

The purpose of this study was to assess the biomechanical contributions of the nail and the plate individually to a complete nail-plate construct in the setting of comminuted distal femur fractures. For this biomechanical study, comminuted extra-articular distal femur fractures were created in 24 synthetic osteoporotic femur models. These were then split into three groups: the nail-only group, the plate-only group, and the nail-plate group. After fixation, each specimen underwent sequential axial and torsional loading, and axial and torsional stiffness were calculated and compared. The addition of a nail to a plate-only construct increased axial stiffness by 19.7% and torsional stiffness by 59.4%. The plate-only group and nail-plate group both demonstrated significantly greater axial and torsional stiffness than the nail-only group at all levels of axial and torsional load. (p < 0.001) At 1000 and 2000 N of cyclic loading, the nail-plate group demonstrated significantly greater axial stiffness than the plate-only group (p ≤ 0.018). The nail-plate group demonstrated greater torsional stiffness than the plate-only groups at all levels of torsional loading (p < 0.001). In osteoporotic comminuted distal femur fracture models, most of the axial stiffness in a nail-plate construct comes from the plate. While the combination of the two constructs is not fully additive, the plate contributes the majority of the axial and torsional stiffness in a nail-plate construct. The supplementation of the plate with a nail primarily helps to increase resistance to rotational forces. Level of Evidence: III.

"Off-Hour" Surgical Start Times Do Not Influence Surgical Precision and Outcomes in Middle-aged Patients and Patients 65 Years and Older With Hip Fractures.

BACKGROUND: Previous studies show the "off-hour" effect impacts outcomes after surgery in non-orthopedic settings. This study assessed if the off-hour effect impacts surgical precision and outcomes in middle-aged patients and patients 65 years and older with hip fractures. MATERIALS AND METHODS: All operative patients in an academic medical center's institutional review board-approved hip fracture registry were reviewed for demographics, hospital quality measures, operative details, radiographic parameters, and outcomes. Patients were grouped into standard (7 am to 4:59 pm) and off-hour (5 pm to 6:59 am) cohorts depending on surgical start time and comparative analyses were conducted. Two subanalyses were conducted: one comparing the quality of reduction for patients with intertrochanteric hip fractures and another comparing the rates of inpatient transfusion and postoperative dislocation for patients treated with arthroplasty. RESULTS: A total of 2334 patients underwent operative treatment. The off-hour cohort had hospital quality measures and outcomes similar to the standard cohort, including length of stay, rates of inpatient complication, mortality, and readmission. Sub-analysis of 814 intertrochanteric hip fractures demonstrated similar tip-apex distance, residual calcar step-off, and post-fixation neck-shaft angle, while subanalysis of 713 patients undergoing arthroplasty showed similar rates of transfusion and dislocation between cohorts. CONCLUSION: The time of day patients undergo hip fracture repair does not affect surgical outcomes or hospital quality measures. These results highlight the need for standardized hip protocols and treatment pathways to provide equitable care at all hours of the day. [Orthopedics. 2024;47(3):185-191.].

Psychiatric Diagnosis Does Not Influence Management or Resolution of Confirmed Fracture-Related Infection.

BACKGROUND: The purpose of this study was to determine if the presence of a standing Diagnostic and Statistical Manual of Mental Disorders, Fifth Edition, psychiatric diagnosis is associated with worse outcomes for patients who develop a confirmed fracture-related infection (FRI). MATERIALS AND METHODS: Included patients had open or closed fractures managed with internal fixation and had confirmed FRIs. Baseline demographics, injury information, and outcomes were collected via chart review. All patients who had a diagnosis of psychiatric illness, which included depression, bipolar disorder, anxiety disorder, and schizophrenia, were identified. Patients with and without a psychiatric diagnosis were statistically compared. RESULTS: Two hundred eleven patients were diagnosed with a confirmed FRI. Fifty-seven (27.0%) patients had a diagnosis of a psychiatric illness at the time of FRI diagnosis. Patients with a psychiatric diagnosis had a higher rate of smoking (56% vs 40%, P=.039) and drug use (39% vs 19%, P=.004) and a higher American Society of Anesthesiologists (ASA) classification (2.35±1.33 vs 1.96±1.22, P=.038); however, there were no other demographic differences. Clinical outcomes also did not differ between the groups, as patients with an FRI and a psychiatric diagnosis had a similar time to FRI diagnosis, similar confirmatory FRI characteristics, and a similar rate of reoperation. Furthermore, there was no difference between patients with FRI with and without a psychiatric diagnosis regarding rate of infection resolution (89% vs 88%, P=.718) or time to final follow-up (20.13±24.93 vs 18.11±21.81 months, P=.270). CONCLUSION: The presence of a psychiatric diagnosis does not affect clinical outcomes in the patient population with FRI. This is the first study exploring the impact of psychiatric illness on patient outcomes after a confirmed FRI diagnosis. [Orthopedics. 202x;4x(x):xx-xx.].

Orthopedic Training in the United States A Continuously Evolving Process.

Orthopedic surgery in the United States has gone through many changes over the past few centuries. Starting with a small sect of subspecialized surgeons, advances in technology and surgical skills have paralleled the growth of the specialty. To keep up with demand, the training of orthopedic surgeons has undergone many iterations. From apprenticeships to the current residency model, the field has always adapted to ensure the constant production of well-trained surgeons to take care of the growing orthopedic needs in the population. In order to guarantee this, many regulatory committees have been formed over the years to help guide the regulation and certification of orthopedic training programs. With current day residents facing new challenges, the specialty continues to adapt the way it trains its future.

No difference in clinical and hospital quality outcomes in treatment of reverse obliquity intertrochanteric Hip fractures (AO/OTA 31.A3) based on Cephalomedullary nail length.

INTRODUCTION: The purpose of this study was to evaluate outcomes following reverse obliquity (RO) intertrochanteric hip fractures based on the use of short cephalomedullary nails (CMNs) compared to long CMNs for fixation. METHODS: An IRB-approved prospectively collected hip fracture registry at an urban academic medical center was queried for all AO/OTA 31A3.1-3 reverse obliquity intertrochanteric (RO) fractures. One hundred and seventy patients with age > 55 years old and minimum 6-month follow-up were identified for analysis. Data was collected for patient demographics, injury details, intraoperative radiographic parameters, perioperative physiologic parameters, hospital quality measures, and outcomes including radiographic time to healing, need for reoperation, nonunion, and mortality. Comparative analyses were conducted between cohorts. Additional multivariable binary logistic and linear regression analyses were performed to evaluate for factors independently associated with short and long nail usage. RESULTS: The mean age of the entire cohort was 80.91±10.09 years: 103 patients had a long CMN implanted, and 67 patients had a short CMN implanted. There were no demographic differences or differences in radiographic time to healing, rates of mortality, readmission, nonunion, and need for reoperation. Univariable analysis revealed that short CMN had lower intraoperative blood loss (111.19±83.97 mL vs 176.72±161.45 mL, p = 0.002), decreased need for transfusion (37% vs. 55 %, p = 0.022), and shorter procedures (118.67±57.87 min vs. 148.95±77.83 min, p = 0.002. Multivariable analysis revealed that short nail usage was associated with decreased intraoperative blood loss, decreased need for transfusion, and shorter operative times. CONCLUSION: Nail length does not affect healing or hospital quality outcomes in the treatment of RO hip fractures. The use of short CMNs for these fractures did correlate with lower intraoperative blood loss, operative time, and need for blood transfusion, with non-inferior outcomes and similar hospital quality measures when compared to long CMNs.

The Evolution of the Treatment of Distal Radius Fractures How We Got to Now.

Distal radius fractures are one of the most common fractures in adults and historically have frequently led to significant disability. Originally described over 5,000 years ago, until recently these fractures were almost exclusively treated by closed methods. Since the introduction of osteosynthesis in 1907, followed by the founding of the AO in 1958, and more recently the development of the volar locked plate in the early 2000s, over the past century the surgical treatment of these fractures has evolved greatly. While technological advancements have changed management for specific fracture patterns, closed treatment still has an important role and is definitive for many patients. The following review provides a historical perspective for current treatment strategies as well as an overview of the important factors that must be considered when treating patients with these injuries.

Periprosthetic fracture following arthroplasty for femoral neck fracture: is a cemented stem protective?

BACKGROUND: Periprosthetic femoral fractures (PFF) carry significant morbidity following arthroplasty for femoral neck fracture (FNF). This study assessed fracture complications following arthroplasty for FNF and the effect of cement fixation of the femoral component on intraoperative and post-operative PFF. METHODS: Between February 2014 and September 2021, 740 patients with a FNF who underwent arthroplasty were analyzed for demographics, surgical management, use of cement for fixation of the femoral component, and subsequent PFF. Variables were compared with Mann-Whitney or Chi-square as appropriate. Multivariate logistic regression was used to assess independent risk factors associated with intraoperative or post-operative PFF. RESULTS: There were 163 THAs (41% cemented) and 577 HAs (95% cemented). There were 28 PFFs (3.8%): 18 post-operative and 10 intraoperative. Fewer post-operative PFFs occurred with cemented stems (1.63% vs. 6.30%, p = 0.002). Mean time from surgery to presentation with post-operative PFF was 14 months (0-45 months). Mean follow-up time was 10.3 months (range: 0-75.7 months). In multivariate regression, use of cement and THA was independently associated with decreased post-operative PFF (cement: OR 0.112, 95% CI 0.036-0.352, p < 0.001 and THA: OR 0.249, 95% CI 0.064-0.961, p = 0.044). More intraoperative fractures occurred during THA (3.68% vs. 0.69%, p = 0.004) and non-cemented procedures (5.51% vs. 0.49%, p < 0.001). In multivariate regression, use of cement was protective against intraoperative fracture (OR 0.100, CI 0.017-0.571, p = 0.010). CONCLUSIONS: In patients with a FNF treated with arthroplasty, cementing the femoral component is associated with a lower risk of intraoperative and post-operative PFF. Choice of procedure may be based on patient factors and surgeon preference.

Clinical and Radiographic Healing of Nonoperative and Operative Treatment of Jones Fractures.

BACKGROUND: Significant heterogeneity in the classification and treatment of zone 3 proximal fifth metatarsal base fractures ("true Jones fractures") exists. This study compared time to clinical and radiographic healing between patients treated operatively and nonoperatively. We hypothesized that patients treated nonoperatively may demonstrate a greater time to clinical healing. METHODS: This was a retrospective cohort study of patients presenting to a large, urban, academic medical center with "Jones" fractures between December 2012 and April 2022. Jones fractures were defined as fifth metatarsal base fractures occurring in the proximal metadiaphyseal region, distal to the articulation of the fourth and fifth metatarsals on the oblique radiographic view. Clinical healing was the time point at which the patient had returned to their baseline ambulatory status with no tenderness to palpation. Radiographic healing was the presence of bridging callus across at least 3 cortices. RESULTS: A total of 2450 patients presented with fifth metatarsal fractures, and 166 fractures (6.8%) were true Jones fractures. Among patients with Jones fractures, 120 patients with 121 Jones fractures followed up at our institution and were included in the analysis (mean age 46.5 ± 18.5 years). Ninety-nine fractures (81.8%) were treated nonoperatively and 22 fractures (18.2%) operatively. There were no differences between nonoperative and operative groups in time to clinical healing (12.7 ± 7.1 vs 12.8 ± 4.8 weeks, P = .931) or radiographic healing (13.2 ± 8.1 vs 11.7 ± 5.9 weeks, P = .331). Overall healing rate was 96% for the nonoperative group compared with 96.2% for the operative group. CONCLUSION: In this study, nonoperative and operative treatment of true Jones fractures were associated with equivalent clinical and radiographic healing. The rate of delayed union in true Jones fractures was lower than previously described, and there was no difference in delayed union rate between nonoperative and operative management. LEVEL OF EVIDENCE: Level III, retrospective cohort study.

Bone Health Evaluations and Secondary Fragility Fractures in Hip Fracture Patients.

Purpose: This study sought to examine the utilization of bone health evaluations in geriatric hip fracture patients and identify risk factors for the development of future fragility fractures. Materials and Methods: A consecutive series of patients ≥55 years who underwent surgical management of a hip fracture between September 2015 and July 2019 were identified. Chart review was performed to evaluate post-injury follow-up, performance of a bone health evaluation, and use of osteoporosis-related diagnostic and pharmacologic treatment. Results: A total of 832 patients were included. The mean age of the patients was 81.2±9.9 years. Approximately 21% of patients underwent a comprehensive bone health evaluation. Of this cohort, 64.7% were started on pharmacologic therapy, and 73 patients underwent bone mineral density testing. Following discharge from the hospital, 70.3% of the patients followed-up on an outpatient basis with 95.7% seeing orthopedic surgery for post-fracture care. Overall, 102 patients (12.3%) sustained additional fragility fractures within two years, and 31 of these patients (3.7%) sustained a second hip fracture. There was no difference in the rate of second hip fractures or other additional fragility fractures based on the use of osteoporosis medications. Conclusion: Management of osteoporosis in geriatric hip fracture patients could be improved. Outpatient follow-up post-hip fracture is almost 70%, yet a minority of patients were started on osteoporosis medications and many sustained additional fragility fractures. The findings of this study indicate that orthopedic surgeons have an opportunity to lead the charge in treatment of osteoporosis in the post-fracture setting.

Zone 2 Fifth Metatarsal Fractures Treated Nonoperatively Have Similar Time to Healing to Those Treated Operatively.

OBJECTIVES: To quantify the rate of union and time to clinical and radiographic healing in Zone 2 proximal fifth metatarsal (MT) fractures and compare these outcomes between Zone 2 fractures treated operatively and nonoperatively. DESIGN: Retrospective cohort study. SETTING: Academic Level I Trauma Center. PATIENT SELECTION CRITERIA: Patients with fifth MT fractures who presented between December 2012 and April 2022 and confirmed to have Zone 2 fractures (defined as fractures entering the proximal 4-5 MT articulation on the oblique radiographic view) were included in the study analysis in either the operative or nonoperative cohort. OUTCOME MEASURES AND COMPARISONS: Nonunion, time to clinical healing by, and time to radiographic healing between operative and nonoperative treatment. RESULTS: Among the 499 included patients, 475 patients (95.2%) were initially treated nonoperatively and 24 patients (4.8%) were treated operatively. Both groups were similar in demographics. There was no difference in the proportion of patients with nonunions between groups (6.1% in the nonoperative group vs. 3.8% in the operative group, P = 1.000). In addition, there was no statistically significant difference between groups with respect to the time to clinical healing (9.9 ± 8.3 weeks for the nonoperative group vs. 15.4 ± 15.0 weeks for the operative group, P = 0.117) or the time to radiographic healing (18.7 ± 12 weeks for the nonoperative group vs. 18.5 ± 16.6 weeks for the operative group, P = 0.970). CONCLUSIONS: Zone 2 fifth MT base fractures were successfully treated with nonoperative management. There was no evidence in this study that operative treatment leads to significantly faster clinical or radiographic healing. LEVEL OF EVIDENCE: Therapeutic Level III. See Instructions for Authors for a complete description of levels of evidence.

Retention of Antibiotic Cement Delivery Implants in Orthopedic Infection Associated With United Fractures Does Not Increase Recurrence Risk.

OBJECTIVES: To evaluate whether retention of antibiotic cement delivery devices after resolution of orthopaedic infection is associated with recurrence. DESIGN: Retrospective cohort. SETTING: Academic medical center. PATIENT SELECTION CRITERIA: Patients with a fracture definitively treated with internal fixation that went on to unite and develop a confirmed fracture-related infection or osteomyelitis after a remote fracture surgery and had implantation of antibiotic-impregnated cement for infection management. OUTCOME MEASURES AND COMPARISONS: Patients were divided into whom the antibiotic implants were retained (Retained Cohort) and whom the antibiotic implants were removed (Removed Cohort). Outcome measures included clinical infection resolution, infection recurrence, time to resolution of infection signs, symptoms and laboratory values, reoperation and readmission rates, and need for soft tissue coverage (local flap vs. free tissue transfer) because of recurrence. RESULTS: Of 98 patients treated for fracture-related infection in united fractures or osteomyelitis after a remote fracture surgery, 39 (39.8%) underwent implantation of antibiotic-impregnated cement delivery devices: 21 (21.4%) beads, 7 (7.1%) rods, and 11 (11.2%) blocks. Twenty patients (51.3%) comprised the Retained Cohort and 19 patients (48.7%) comprised the Removed Cohort. There were few differences in demographics ([American Society of Anesthesiology Score, P = 0.026] and [diabetes, P = 0.047]), infection location, and pathogenic profiles. The cohorts demonstrated no difference in eventual resolution of infection (100% in the Retained Cohort, 95% in the Removed Cohort, P = 0.487) and experienced similar time to clinical infection resolution, based on signs, symptoms, and laboratory values ( P = 0.360). There was no difference in incidence of subsequent infection recurrence after clinical infection resolution (1 recurrence Retained vs. 2 recurrences Removed, P = 0.605) for those considered "cured." Compared with the Retained Cohort, the Removed Cohort underwent more reoperations (0.40 vs. 1.84 reoperations, P < 0.001) and admissions after implantation ( P < 0.001). CONCLUSIONS: Retention of antibiotic-impregnated cement delivery devices in patients with orthopaedic infection after fractured bones that have healed was not associated with infection recurrence. Additional surgical intervention with the sole purpose of removing antibiotic delivery devices may not be warranted. LEVEL OF EVIDENCE: Prognostic Level III. See Instructions for Authors for a complete description of levels of evidence.

External fixation about the elbow: Indications and long-term outcomes.

Background: Operative management is often required for fractures of the elbow, with treatment goals aiming to restore stability, reduction, and early range of motion. The purpose of this study was to determine risk factors for necessitating the application of an external fixator, and to compare range of motion and functional outcomes between patients who required an elbow external fixator to those who did not. Hypothesis: We hypothesize that patients who require an external fixator will have worse elbow range of motion and functional outcomes when compared to those who did not. Patients and methods: This is a retrospective study of 391 patients who presented at a Level-I trauma center between March 2011 and January 2021 for operative management of a fracture/fracture-dislocation of the distal humerus (AO/OTA 13A-C) and/or proximal ulna and/or radius (AO/OTA 21A-C). A primary analysis was performed to determine risk factors for necessitating the application of an external fixator. A secondary analysis was performed comparing elbow range-of-motion and functional outcomes between cases and controls. Results: 391 patients were identified; 26 required external fixation (cases) and 365 did not (controls). Significant risk factors for necessitating placement of an external fixator included large BMI (OR = 1.087, 95 % CI = 1.007-1.173, p = 0.033), elbow dislocation (OR = 7.549, 95 % CI = 2.387-23.870, p = 0.001), open wound status (OR = 9.584, 95 % CI = 2.794-32.878, p < 0.001), and additional non-contiguous orthopaedic injury (OR = 9.225, 95 % CI = 2.219-38.360, p = 0.002). Elbow ROM was poorer in the external fixator group with regards to extension (-15°), flexion (+19.4°), and pronation (+14.3°) (p < 0.05). In addition, those who did not need external fixation had better functional scores (+20.4 points MEPI) (p < 0.05). Discussion: The use of external fixation about the elbow is associated with significantly worse initial injuries and results in poorer outcomes. These results can be used to inform the surgeon-patient discussion regarding treatment options and expected functional outcomes. Level of evidence: III.

The effect of traumatic head injuries on the outcome of middle-aged and geriatric orthopedic trauma patients.

BACKGROUND: The purpose of this study is to characterize the effects of head injuries amongst the middle-aged and geriatric populations on hospital quality measures, costs, and outcomes in an orthopedic trauma setting. METHODS: Patients with head and orthopedic injuries aged >55 treated at an academic medical center from October 2014-April 2021 were reviewed for their Abbreviated Injury Score for Head and Neck (AIS-H), baseline demographics, injury characteristics, hospital quality measures and outcomes. Univariate comparative analyses were conducted across AIS-H groups with additional regression analyses controlling for confounding variables. All statistical analyses were conducted with a Bonferroni adjusted alpha. RESULTS: A total of 1,051 patients were included. The mean age was 74 years, and median AIS-H score was 2 (range 1-6). While outcomes worsened and costs increased as AIS-H scores increased, the most drastic (and clinically relevant) rise occurs between scores 2-3. Patients who sustained a head injury warranting an AIS-H score of 3 experienced a significantly higher rate of major complications, need for ICU admission, inpatient and 1-year mortality with longer lengths of stay and higher total costs despite no differences in demographics or injury characteristics. Regression analysis found a higher AIS-H score was independently associated with greater mortality risk. CONCLUSION: AIS-H scores >2 correlate with significantly worse outcomes and higher hospital costs. Concomitant head injuries impact both outcomes and direct variable costs for middle-aged and geriatric orthopedic trauma patients. Clinicians, hospitals, and payers should consider the significant effect of head injuries on the hospitalization of these patients.

Thigh compartment syndrome: Outcomes in an urban level 1 trauma center.

INTRODUCTION: Thigh compartment syndrome (TCS) is a rare surgical emergency associated with a high risk of morbidity with mortality rates as high as 47 %. There is sparse literature discussing the management as well as outcomes of these injuries. The purpose of this study is to review a consecutive series of patients presenting to a single urban Level 1 trauma center with TCS to identify injury characteristics, clinical presentation, and outcomes associated with this injury. METHODS: A trauma database was queried for all patients with a diagnosis of TCS at a single level 1 urban trauma center between January 1, 2011 and December 31, 2021. Demographic and injury variables collected included age, sex, BMI, mechanism of injury, and creatine phosphokinase levels (CPK). Hospital quality measures including time from admission to surgery, length of both hospital and ICU stay, complications, and cost of care were collected. Descriptive statistics are reported as median [interquartile range] or N (percent). RESULTS: There were 14 patients identified with a diagnosis of TCS. All were men with an average age 33.5 [23.5 - 38] years and an average BMI of 26 [22.9-28.1]. The most common cause of injury was blunt trauma (71.4 %), and the remaining 28.6 % were gunshot wound injuries. Within the cohort, 6 (42.9 %) patients sustained a femoral shaft fracture, and 4 (28.6 %) patients sustained a vascular injury. The median initial CPK of patients within this cohort was 3405 [1232-5339] and reached a peak of 5271 [3013-13,266]. The median time from admission to diagnosis was 6.8 [0-236.9] hours. The median time from admission to the operating room was 8.2 [0.6-236.9] hours, and the median number of operating room visits was 3 [2 - 6]. Five patients (35.7 %) wounds were closed with split thickness skin grafting. There were 12 (85.7 %) patients who required ICU care. The median ICU length of stay was 7.5 days [4-15]. The median hospital length of stay was 16.5 days [13.25-38.0]. The median total charges for a patient with thigh compartment syndrome was $129,159.00 [$24,768.00 - $587,152.00]. The median direct variable cost for these patients was $86,106.00 For comparison, the median direct variable cost for patients with femur fractures without TCS at this institution was $8,497.28 [$1,903.52-$21,893.13]. No patients required readmission within 60 days. There were no mortalities. CONCLUSION: TCS is a rare and life-threatening injury associated with significant morbidity. Despite rapid diagnosis and fasciotomy, the majority of the patients have prolonged hospital courses, ICU lengths of stay, and significant costs of treatment. Providers can reference the outcomes reported in this study when caring for TCS patients.

A Good Tip-Apex Distance Does Not Make Up For a Poor Reduction in Intertrochanteric Hip Fractures Treated with an Cephalomedullary Nail: The Utility of the Neck-Shaft Angle in Preventing Fixation Failure.

PURPOSE: Determine if any fracture characteristics or radiographic parameters were predictive of fixation failure [FF] within 1 year following cephalomedullary nailing for intertrochanteric fractures. METHODS: A consecutive series of intertrochanteric hip fracture patients (AO/OTA 31A) treated with a cephalomedullary nail were reviewed. Pre-fixation (neck-shaft angle [NSA], distance from ischial tuberosities to greater and lesser trochanters, integrity of lesser trochanter, and fracture angulation) and post-fixation (post-fixation NSA, posteromedial cortex continuity, lag screw position, tip to apex distance [TAD], and post-fixation angulation and translation) radiographic parameters were measured by blinded independent reviewers. The FF and non-FF groups were statistically compared. Logistic regression was performed to determine radiographic parameter correlates of FF. RESULTS: Of 1249 patients, 23 (1.8%) developed FF within 1 year. The FF patients were younger than their non-FF counterparts (77.2 years vs 81.0 years, p=0.048), however there were no other demographic differences. The FF cohort did not differ in frequency of TAD over 25 mm (4.3% vs 9.6%, p=0.624) and had decreased mean TAD (13.6mm vs 16.3mm, p=0.021) relative to the non-FF cohort. The FF cohort had a higher rate of a post-fixation coronal plane NSA more than 10° different from the contralateral side (delta NSA>10°, 34.8% vs 13.7%, p=0.011) with the majority fixed in relative varus. For every 1° increase in varus compared to the contralateral side the odds of FF increased 7% (OR=1.065, 95%CI[1.005-1.130], p=0.034) on univariate analysis. On univariate logistic regression, patients with an absolute post-fixation NSA of 10° or more of varus compared to contralateral were significantly more likely to have a FF (OR=3.139, 95%CI[1.067-8.332], p=0.026). CONCLUSION: Despite an acceptable TAD, post-fixation NSA in relative varus as compared to the contralateral side was significantly associated with failure in intertrochanteric hip fractures fixed with a cephalomedullary nail. LEVEL OF EVIDENCE: Prognostic Level III.

Surgical repair of large segmental bone loss with the induced membrane technique: patient reported outcomes are comparable to nonunions without bone loss.

OBJECTIVE: To compare the outcomes of patients with segmental bone loss who underwent repair with the induced membrane technique (IMT) with a matched cohort of nonunion fractures without bone loss. DESIGN: Retrospective analysis on prospectively collected data. SETTING: Academic medical center. PATIENTS: Two cohorts of patients, those with upper and lower extremity diaphyseal large segmental bone loss and those with ununited fractures, were enrolled prospectively between 2013 and 2020. Sixteen patients who underwent repair of 17 extremities with segmental diaphyseal or meta-diaphyseal bone defects treated with the induced membrane technique were identified, and matched with 17 patients who were treated for 17 fracture nonunions treated without an induced membrane. Sixteen of the bone defects treated with the induced membrane technique were due to acute bone loss, and the other was a chronic aseptic nonunion. MAIN OUTCOME MEASUREMENTS: Healing rate, time to union, functional outcome scores using the Short Musculoskeletal Functional Assessment (SMFA) and pain assessed by the Visual Analog Scale (VAS). RESULTS: The initial average defect size for patients treated with the induced membrane technique was 8.85 cm. Mean follow-up times were similar with 17.06 ± 10.13 months for patients treated with the IMT, and 20.35 ± 16.68. months for patients treated without the technique. Complete union was achieved in 15/17 (88.2%) of segmental bone loss cases treated with the IMT and 17/17 (100%) of cases repaired without the technique at the latest follow up visit. The average time to union for patients treated with the induced membrane technique was 13.0 ± 8.4 months and 9.64 ± 4.7 months for the matched cohort. There were no significant differences in reported outcomes measured by the SMFA or VAS. Patients treated with the induced membrane technique required more revision surgeries than those not treated with an induced membrane. CONCLUSION: Outcomes following treatment of acute bone loss from the diaphysis of long bones with the induced membrane technique produces clinical and radiographic outcomes similar to those of long bone fracture nonunions without bone loss that go on to heal. LEVEL OF EVIDENCE: III.

Fracture related infection (FRI) of the upper extremity correlates with poor bone and soft tissue healing.

PURPOSE: The purpose of this study was to evaluate the specific course and complication profile following the development of FRI in the upper extremity. METHODS: An IRB-approved retrospective review was conducted on a consecutive series of operatively managed patients within an academic medical center between 1/2010 and 6/2022. Included patients met the following criteria: (1) upper extremity fracture definitively treated with internal fixation (2) development of criteria for suggestive or confirmatory FRI (as per the FRI Consensus Group) and (3) age ≥ 18 years. Baseline demographics, medical history, injury information, infection characteristics, hospital quality measures, and outcomes were recorded. A 3:1 propensity-matched control cohort of patients without FRI was obtained using the same dataset. Univariable analysis was performed to compare the outcomes (rate of nonunion, time to bone healing, need for soft tissue coverage, patient reported joint stiffness at final follow-up) of the FRI vs Non-FRI cohorts. RESULTS: Of 2827 patients treated operatively for an upper extremity fracture, 43 (1.53%) met criteria for suggestive of confirmatory FRI. The successful propensity match (43 FRI, 129 Non-FRI) revealed no differences in demographics, baseline health status, or fracture location. FRI patients underwent more reoperations (p < 0.001), experienced an increased rate of removal of hardware (p < 0.001), and were admitted more frequently following index operation (p < 0.001). The FRI cohort had higher rates of fracture nonunion (p = 0.003), and a prolonged mean time to bone healing in months (8.37 ± 7.29 FRI vs. 4.14 ± 5.75 Non-FRI, p < 0.001). Additionally, the FRI cohort had a greater need for soft tissue coverage throughout their post-operative fracture treatment (p = 0.014). While there was no difference in eventual bone healing (p = 0.250), FRI patients experienced a higher incidence of affected joint stiffness at final follow-up (p < 0.001). CONCLUSION: Patients who develop an FRI of the upper extremity undergo more procedures and experience increased complications throughout their treatment, specifically increased joint stiffness. Despite this, ultimate outcome profiles are similar between patients who experience FRI and those who do not following operative repair of an upper extremity fracture. LEVEL OF EVIDENCE: III.

Atypical Versus Typical Subtrochanteric Femoral Fractures: Disparate Patient Profiles, Similar Outcomes.

BACKGROUND: The purpose of the present study was to evaluate differences in demographic features and clinical outcomes between patients who sustained a typical versus atypical subtrochanteric femoral fracture. METHODS: We reviewed the records for a cohort of consecutive patients who had undergone operative treatment of a subtrochanteric femoral fracture. Fractures were classified as either "typical" or "atypical" on the basis of the criteria of the American Society for Bone and Mineral Research (ASBMR). All patients were treated with a similar surgical algorithm and postoperative protocol. Groups were compared on the basis of demographic features, injury characteristics, operative quality measures, postoperative complications and outcomes, and radiographic time to healing. Comparative analyses were performed to compare the typical and atypical cohorts. RESULTS: Of 220 subtrochanteric fractures, 165 (75.0%) were classified as typical and 55 (25.0%) were classified as atypical. The atypical cohort was predominately female and more likely to have bisphosphonate usage (odds ratio [OR], 7.975; [95% confidence interval (CI), 3.994-15.922]; p < 0.001) and fractures with lower-energy mechanisms (p < 0.001). Patients in the atypical cohort were more likely to be treated with a 10-mm cephalomedullary nail (CMN) (OR, 2.100 [95% CI, 1.119-3.939]; p = 0.020), whereas patients in the typical cohort were treated more frequently with an 11-mm CMN (OR, 0.337 [95% CI, 0.168-0.674]; p = 0.002). There were no differences between the groups in terms of other operative parameters; however, anatomic fracture reduction in neutral lateral alignment was achieved more frequently in the typical cohort (OR, 0.438 [95% CI, 0.220-0.875]; p = 0.018). There were no differences between the groups in terms of hospital quality measures, mortality rates, readmission rates, or complication rates (including implant failure [broken screw or nail] and fracture nonunion) (p = 1.00). Interestingly, there was no significant difference between the groups in terms of time to radiographic healing (260.30 ± 187.97 days in the typical group, compared with 246.40 ± 116.33 days in the atypical group) (OR, 0.999 [95% CI, 0.997-1.002]; p = 0.606). CONCLUSIONS: Despite differences in terms of demographic and injury characteristics, patients who sustain a subtrochanteric femur fracture can expect similar outcome profiles regardless of fracture type. LEVEL OF EVIDENCE: Prognostic Level III . See Instructions for Authors for a complete description of levels of evidence.