Faculty Bibliography

INTRODUCTION/BACKGROUND:The purpose of this study was to combine a validated middle-age and geriatric trauma risk assessment tool (STTGMA) with a novel cost-prediction tool to create an objective triage tool for elderly hip fractures that would guide value-based care initiatives. METHODS:From October 2014 to January 2018, all patients aged ≥55 years who were admitted with a primary diagnosis of hip fracture to a single level 1 trauma center were enrolled. Upon evaluation in the emergency department, demographics, injury severity, and functional status were recorded to calculate the trauma triage score (STTGMARisk). A model to predict high-cost hip fracture patients was created using similar variables (STTGMACost). RESULTS:Three hundred sixty-one consecutive operative hip fracture patients were enrolled. Inpatient mortalities were skewed toward STTGMARisk3 with 21.4% of patients in this high-risk group ultimately expiring during their hospitalization. High-cost patients were correctly skewed to the STTGMACost2 and STTGMACost3 groups with 88.9% of all high-cost operatively treated hip fracture correctly triaged to these cohorts. Statistically significant variations were found in cost within each STTGMARisk group. CONCLUSIONS:A simple risk score calculated upon admission (STTGMARisk and STTGMACost) was able to be used as a triage tool not only to differentiate increased mortality risk but also to predict high-cost patients based on resource utilization in hip fracture patients. LEVEL OF EVIDENCE/METHODS:Prognostic, level II.

The purpose of this study is to determine when functional outcome no longer improves following tibial plateau fracture. A patient series of operatively treated tibial plateau fractures was reviewed. Patients were evaluated using the short musculoskeletal function assessment (SMFA), range of motion (ROM) assessment, and pain levels at visual analog scale (VAS) at 3, 6, and 12 months postoperatively. Fractures were classified by the Schatzker's classification using preoperative imaging. The case series was divided into two groups based on fracture patterns. Friedman's tests were conducted to determine if there were differences in SMFA, ROM, or VAS throughout the postoperative course. A total of 117 patients with tibial plateau fractures treated operatively, with complete follow-up and without complication, were identified. Seventy-seven patients (65.8%) sustained lateral tibial plateau fractures (Schatzker's I-III). Friedman's test demonstrated significant differences in SMFA (p < 0.0005) and ROM (p < 0.0005) at the three time points. Post hoc analysis demonstrated a significant difference in SMFA (p < 0.0005) and ROM (p = 0.003) between 3 and 6 months postoperatively but no significant difference in either metric between 6 and 12 months postoperatively. Friedman's test demonstrated no significant difference in VAS postoperatively (p = 0.210). Forty patients (34.2%) sustained medial or bicondylar tibial plateau fractures (Schatzker's IV-VI). Friedman's test demonstrated significant differences in SMFA (p < 0.0005) and ROM (p < 0.0005) at the three time points. Post hoc analysis demonstrated a strong trend toward significance in SMFA between 3 and 6 months postoperatively (p = 0.088), and demonstrated a significant difference between 6 and 12 months postoperatively (p = 0.013). ROM was found to be significantly different between 3 and 6 months postoperatively (p = 0.010), but no difference was found between 6 and 12 months postoperatively (p = 0.929). Friedman's test demonstrated no significant difference in VAS postoperatively (p = 0.941). In this cohort, no significant difference in function, ROM, or pain level exists between 6 and 12 months after treatment of lateral tibial plateau fractures. However, there are significant improvements in function for at least 1 year following medial or bicondylar tibial plateau fractures.

Introduction/UNASSIGNED:Lateral compression type 1 (LC1) pelvic ring fractures make up 63% of all pelvic ring injuries. This fracture pattern is typically seen in older patients. The purpose of this study is to assess the ambulatory status of individuals sustaining LC1 fractures at long-term follow-up and what specific characteristics, if any, effect this status or functional outcomes. Methods/UNASSIGNED:Over a 2-year period, all pelvic ring injury at 2 hospitals within one academic institution was queried. One hundred sixty-one low-energy LC1 pelvic fractures were identified. Results/UNASSIGNED:= .010). Forty-three (86%) patients didn't use an assistive ambulatory device prior to sustaining the LC1 fracture. Seven (14%) patients utilized assistive devices both before and after the LC1 injury. Thirteen (26%) patients, who did not utilize assistive ambulatory devices prior to their injury, necessitated them at long-term follow-up. Discussion/UNASSIGNED:Surgeons should be aware of these associations, as they can implement early interventions aimed at patients at risk, for assistive device use, following LC1 pelvic fractures. Conclusion/UNASSIGNED:More than a quarter of the patients sustaining an LC1 pelvic fracture continue to use an aid for ambulation at long-term follow-up. Older age, complications, and falls within 30 days of this injury are associated with the utilization of an assistive ambulatory device.

OBJECTIVES/OBJECTIVE:To propose a previous implant fractures (PIFs) classification system with good interobserver reliability. DESIGN/METHODS:Retrospective classification. SETTING/METHODS:Four academic medical centers. PATIENTS/PARTICIPANTS/METHODS:A retrospective review of PIFs treated at 4 academic medical centers over 10 years was performed. Data collected included initial implant and PIF radiographs. There were 103 PIFs in 96 patients during the study period. Seventy-three (70.9%) were about plate/screw (PS) constructs and 30 (29.1%) were about intramedullary (IM) devices. INTERVENTION/METHODS:Assignment of PIF classification. MAIN OUTCOME MEASUREMENTS/METHODS:PIFs were classified based on initial implant (PS or IM) and fracture location with respect to the initial implant (proximal or distal to the implant, at the tip of the construct, or within the construct). Reliability of this scheme was assessed among 5 observers using Fleiss' kappa tests. RESULTS:Of PIFs about plate/screw constructs, 26.0% were proximal/distal to the implant (classification: PS1), 57.5% involved bone between the most proximal/distal screw and the same end of the plate (classification: PS2), and 16.4% involved only bone between the most proximal and distal screws (classification: PS3). Of PIFs about IM, 43.3% were distal to the device (classification: IM1), 46.7% involved bone between the most proximal/distal locking bolt and the same end of the device (classification: IM2), and 10.0% involved only bone between locking bolts (classification: IM3). Interobserver reliability for the classification system was excellent between observers, κ = 0.839, P < 0.0005. CONCLUSIONS:The proposed system offers a simple method to classify and describe fractures that occur about a previously implanted fracture device. Development of a classification system will allow for comparison of treatment modalities between injury types.

OBJECTIVES/OBJECTIVE:(1) To assess the correlation of psychosocial factors and long-term outcomes of proximal humerus fractures all in surgical repair; (2) to identify specific psychosocial factors with favorable and unfavorable outcomes; and (3) to assess the correlation between DSM-V mental health diagnoses and long-term Disabilities of Arm, Shoulder, and Hand (DASH) scores. DESIGN/METHODS:Prospective cohort study. SETTING/METHODS:Academic medical center. PATIENTS/METHODS:Patients were screened and identified on presentation to the emergency department or in the clinical office for inclusion in an institutional review board-approved registry. One hundred eighty-five proximal humerus fractures of 247 met inclusion criteria. INTERVENTION/METHODS:Surgical repair of proximal humerus fractures. MAIN OUTCOME MEASURE/METHODS:All patients were prospectively followed up and assessed for clinical and functional outcomes at latest follow-up visit (mean = 24.8 months) using the DASH questionnaires along with ranges of motion and pain level. Psychosocial factors at 3 months were obtained from the DASH survey. RESULTS:Concomitant diagnosis of depressed mood (P = 0.001), anxiety (P < 0.0005), low energy level (P = 0.003), and fatigue (P = 0.001) correlated significantly with poorer outcome. All 6 psychosocial factors correlated directly and significantly with pain at latest follow-up (P < 0.0005). Multiple regression analysis revealed that the strongest predictor of the overall DASH score was the extent of interference with social life (P = 0.001). CONCLUSION/CONCLUSIONS:Analysis demonstrated that psychological and social factors at 3 months postoperatively have a strong correlation with negative long-term (>1 year) outcomes after proximal humerus fixation. Clinicians may offer psychological support and encourage social support to these patients postoperatively to improve pain and treatment outcomes. LEVEL OF EVIDENCE/METHODS:Prognostic Level III. See Instructions for Authors for a complete description of levels of evidence.

Background/UNASSIGNED:The purpose of this study is to evaluate the ability of preoperative and postoperative radiographic union scores for tibia fractures (RUST) to predict treatment success of tibia fracture nonunion. Materials and methods/UNASSIGNED:Patients presenting for operative treatment of tibia fracture nonunion were enrolled in a prospective data registry. Enrolled patients were followed at regular intervals for 12 months. Preoperative and 12 week postoperative radiographs were reviewed and scored using the RUST criteria. Postoperative time to union was determined by clinical and radiographic measures. Multivariate regressions were conducted to predict time to union using preoperative and postoperative RUST while controlling for treatment method. Receiver operating characteristic (ROC) curve was conducted to determine the accuracy of preoperative RUST in predicting failure of treatment. Results/UNASSIGNED:Sixty-eight patients with aseptic tibia fracture nonunion treated operatively were identified. Sixty-one patients achieved union. Mean preoperative RUST was 7.5 (SD 1.4). Mean postoperative RUST was 9.2 (SD 1.4). Multivariate linear regressions demonstrated that preoperative (p = 0.043) and postoperative (p = 0.007) RUST are significant predictors of time to union after tibia fracture nonunion surgery. ROC curve demonstrated preoperative RUST below 7 was a good predictor of developing persistent tibia fracture nonunion (AUC = 0.83, Sensitivity = 1.000, Specificity = 0.745). Conclusions/UNASSIGNED:RUST preoperatively and postoperatively predicts outcome after nonunion surgery. RUST can be used as part of the complete clinical picture to shape patient expectations and guide treatment.

CASE/METHODS:An 65-year-old immunocompetent female developed a Leclercia adecarboxylata infection following the repair of closed olecranon fracture. L. adecarboxylata is associated with polymicrobial infections, infections in immunocompromised patients and penetrating or open wounds. Following speciation, intravenous ceftriaxone was started. Two weeks later, the patient presented with leukopenia and neutropenia. Per infectious disease recommendations, the patient was switched to intravenous ertapenem with resolution of both infection and neutropenia. The olecranon fracture went on to heal fully. CONCLUSIONS:This case describes a rare postoperative monomicrobial infection with L. adecarboxylata in an immunocompetent host following musculoskeletal trauma and identifies L. adecarboxylata as a potential emerging hospital-acquired pathogen following orthopedic surgery.

OBJECTIVES/OBJECTIVE:To evaluate the clinical and functional outcomes after operative repair of nonunited lower extremity fractures initially repaired outside the developed Western world. DESIGN/METHODS:Retrospective analysis of prospectively collected data. SETTING/METHODS:Academic medical center. PATIENTS/PARTICIPANTS/METHODS:From September 2004 through February 2017, 227 patients who underwent operative repair of a lower extremity fracture nonunion were prospectively enrolled in a research registry. All patients underwent previous fracture surgery and had at least 12 months of postoperative follow-up. INTERVENTION/METHODS:Repair of lower extremity fracture nonunion. MAIN OUTCOME MEASUREMENTS/METHODS:Postoperative complications, reoperation rate, time to union, and functional outcomes were assessed using the Short Musculoskeletal Function Assessment and Visual Analog Scale pain scores. Univariate and multivariate analyses were performed to evaluate the differences in patients who underwent initial fracture repair outside the developed Western world as opposed to within the United States. RESULTS:Twenty-one patients (9.3%) underwent initial fracture repair outside the developed Western world. These patients had a greater incidence of infected nonunions (47.6% vs. 23.3%; P = 0.015) and failure of a previous implant at the time of presentation (52.4% vs. 22.8%; P = 0.003) than those initially managed within the United States. This cohort also experienced a greater rate of postoperative complications after nonunion repair (23.8% vs. 6.3%; P = 0.016). The geographic location of initial fracture repair was not associated with postoperative Short Musculoskeletal Function Assessment scores or Visual Analog Scale pain scores after controlling for possible confounding variables. CONCLUSIONS:Patients who present with a nonunited lower extremity fracture initially repaired outside the developed Western world experience a high rate of postoperative complications after fracture nonunion repair but can expect good short- and long-term functional outcomes. LEVEL OF EVIDENCE/METHODS:Prognostic Level III. See Instructions for Authors for a complete description of levels of evidence.

INTRODUCTION/BACKGROUND:Periprosthetic fracture nonunions represent a rare problem in orthopaedic practice, although their incidence has increased with the increased frequency of joint replacement surgery. This video demonstrates the use of a linked nail-plate construct to repair a distal femoral periprosthetic fracture nonunion. METHODS:The patient is a 93-year-old woman who is 1-year status-post a left distal femoral periprosthetic fracture with known delayed healing. She presents with a low energy trauma and hardware failure. The patient was indicated for operative fixation using a linked nail-plate construct given the patient's previous hardware failure, advanced age, and poor bone quality. RESULTS:This video demonstrates the linked nail-plate technique for the repair of a distal femoral periprosthetic fracture nonunion. Anatomical reduction and stable fixation with bone graft was performed with excellent results. There were no intraoperative or postoperative complications and no issues related to metallurgy. CONCLUSIONS:In this video, we present the case of an atrophic distal femoral periprosthetic nonunion treated with a linked nail-plate construct with autologous bone graft. Although femoral periprosthetic fracture nonunions are a rare occurrence, they can be successfully treated with operative intervention aimed at compression plating with supplemental bone grafting.