Socioeconomic status is associated with greater hazard of post-discharge mortality than race, gender, and ballistic injury mechanism in a young, healthy, orthopedic trauma population.

OBJECTIVES: To explore the utility of legacy demographic factors and ballistic injury mechanism relative to popular markers of socioeconomic status as prognostic indicators of 10-year mortality following hospital discharge in a young, healthy patient population with isolated orthopedic trauma injuries. METHODS: A retrospective cohort study was performed to evaluate patients treated at an urban Level I trauma center from January 1, 2003, through December 31, 2016. Current Procedure Terminology (CPT) codes were used to identify upper and lower extremity fracture patients undergoing operative fixation. Exclusion criteria were selected to yield a patient population of isolated extremity trauma in young, otherwise healthy individuals between the ages of 18 and 65 years. Variables collected included injury mechanism, age, race, gender, behavior risk factors, Area Deprivation Index (ADI), and insurance status. The primary outcome was post-discharge mortality, occurring at any point during the study period. RESULTS: We identified 2539 patients with operatively treated isolated extremity fractures. The lowest two quartiles of socioeconomic status (SES) were associated with higher hazard of mortality than the highest SES quartile in multivariable analysis (Quartile 3 HR: 2.2, 95% CI: 1.2-4.1, p = 0.01; Quartile 4 HR: 2.2, 95% CI: 1.1-4.3, p = 0.02). Not having private insurance was associated with higher mortality hazard in multivariable analysis (HR 2.0, 95% CI: 1.3-3.2, p = 0.002). The presence of any behavioral risk factor was associated with higher mortality hazard in univariable analysis (HR: 1.8, p < 0.05), but this difference did not reach statistical significance in multivariable analysis (HR: 1.4, 95%: 0.8-2.3, p = 0.20). Injury mechanism (ballistic versus blunt), gender, and race were not associated with increased hazard of mortality (p > 0.20). CONCLUSION: Low SES is associated with a greater hazard of long-term mortality than ballistic injury mechanism, race, gender, and medically diagnosable behavioral risk factors in a young, healthy orthopedic trauma population with isolated extremity injury.

A Comparison of the Prevalence of, Demographics of, and Effects on Outcomes of Bilateral Versus Unilateral Femoral Shaft Fractures: A Retrospective Cohort Analysis From the National Trauma Data Bank.

OBJECTIVES: To document the prevalence of, and the effect on outcomes, operatively treated bilateral femur fractures treated using contemporary treatments. DESIGN: A retrospective cohort using data from the National Trauma Data Bank. PARTICIPANTS: In total, 119,213 patients in the National Trauma Data Bank between the years 2007 and 2015 who had operatively treated femoral shaft fractures. MAIN OUTCOME MEASUREMENTS: Complication rates, hospital length of stay (LOS), days in the intensive care unit (ICU LOS), days on a ventilator, and mortality rates. RESULTS: Patients with bilateral femur fractures had increased overall complications (0.74 vs. 0.50, P < 0.0001), a longer LOS (14.3 vs. 9.2, P < 0.0001), an increased ICU LOS (5.3 vs. 2.4, P < 0.0001), and more days on a ventilator (3.1 vs. 1.3, P < 0.0001), when compared with unilateral fractures. Bilateral femoral shaft fractures were independently associated with worse outcomes in all primary domains when adjusted by Injury Severity Score (P < 0.0001), apart from mortality rates. Age-adjusted bilateral injuries were independently associated with worse outcomes in all primary domains (P < 0.0001) except for the overall complication rate. A delay in fracture fixation beyond 24 hours was associated with increased mortality (P < 0.0001) and worse outcomes for all other primary measures (P < 0.0001 to P = 0.0278) for all patients. CONCLUSIONS: Bilateral femoral shaft fractures are an independent marker for increased hospital and ICU LOS, number of days on a ventilator, and increased complication rates, when compared with unilateral injuries and adjusted for age and Injury Severity Score. Timely definitive fixation, in a physiologically appropriate patient, is critical because a delay is associated with worse inpatient outcome measures and higher mortality rates. LEVEL OF EVIDENCE: Prognostic Level III. See Instructions for Authors for a complete description of levels of evidence.

Necrotizing Soft-Tissue Infections After Hip Arthroplasty.

Necrotizing soft-tissue infections are a rare complication following hip arthroplasty procedures. These rapidly spreading infections have a high mortality rate and must be diagnosed and treated in an expeditious manner. This article discusses the epidemiology, classification, diagnosis, and treatment of these conditions and describes 2 related case reports.

Kocher-Langenbeck Approach for Posterior Wall Acetabular Fractures.

Adequate surgical exposure is necessary for anatomical reduction and fixation of posterior wall acetabular fractures. This video demonstrates the Kocher-Langenbeck approach to the posterior acetabulum, as well as operative indications, surgical reduction and fixation techniques, and outcomes for posterior wall acetabular fractures.

A Novel Indirect Reduction Technique in Ankle Syndesmotic Injuries: A Cadaveric Study.

OBJECTIVE: To describe a novel technique using preoperative computed tomography (CT) to plan clamp tine placement along the trans-syndesmotic axis (TSA). We hypothesized that preoperative CT imaging provides a reliable template on which to plan optimal clamp tine positioning along the TSA, reducing malreduction rates compared with other described techniques. METHODS: CT images of 48 cadaveric through-knee specimens were obtained, and the TSA was measured as well as the optimal position of the medial clamp tine. The syndesmosis was then fully destabilized. Indirect clamp reductions were performed with the medial clamp tine placed at positions 10 degrees anterior to the TSA, along the TSA, and at both 10 and 20 degrees posterior to the TSA. The specimens were then separately reduced using manual digital pressure and palpation alone. CT was performed after each clamp and manual reduction. RESULTS: On average, reduction clamp tines were within 3 ± 2 degrees of the desired angle and within 5% ± 4% of the templated location along the tibial line for all clamp reduction attempts. Palpation and direct visualization produced the overall lowest malreduction rates in all measurements: 4.9% and 3.0%, respectively. Off-axis clamping 10 degrees anterior or 20 degrees posterior to the patient-specific TSA demonstrated an increased overall malreduction rate: 15.8% and 11.3%, respectively. Significantly more over-compression occurred when a reduction clamp was used versus manual digital reduction alone (8.6% vs. 0%). CONCLUSIONS: Reduction clamp placement directly along an optimal clamping vector can be facilitated by preoperative CT measurements of the uninjured ankle. However, even in this setting, the use of reduction clamps increases the risk for syndesmotic malreduction and over-compression compared with manual digital reduction or direct visualization.

Functional Outcomes of Syndesmotic Injuries Based on Objective Reduction Accuracy at a Minimum 1-Year Follow-Up.

OBJECTIVE: To evaluate whether objective syndesmosis reduction predicts functional outcomes and pain scores in patients with operatively treated syndesmotic injuries at a minimum 1-year follow-up. DESIGN: Prospective Cohort. SETTING: Urban Level I Trauma Center. PATIENTS: Sixty-nine patients with operatively treated syndesmotic injuries were initially identified and consented for inclusion in the study. Nine patients were excluded perioperatively. Twelve patients were lost to follow-up. Forty-eight patients with operatively treated unilateral syndesmotic injuries were available and participated at the final follow-up. INTERVENTION: Trans-syndesmotic stabilization with either 1 or 2 quadricortical position screws. Postoperatively, bilateral ankle computed tomography scans were obtained to objectively assess syndesmosis reduction accuracy. MAIN OUTCOME MEASUREMENTS: Olerud-Molander Ankle Score, Short Musculoskeletal Function Assessment Dysfunction Index and Bother Index, and Numeric Pain Rating Scales at a minimum 1-year postoperative follow-up. RESULTS: At 1-year follow-up, there was no significant difference in functional outcomes between reduced and malreduced groups at the 1.5-, 2-, and 3-mm thresholds for linear measurements. Similarly, there was no functional difference between the reduced and malreduced groups for rotational malreductions at a 10 or 15 degrees threshold. Patients with state-sponsored insurance (Medicaid) had significantly worse functional scores and pain scores when compared with the groups with private insurance, Medicare, or no insurance. CONCLUSIONS: At 1-year follow-up, functional outcomes were not related to objective measures of syndesmosis reduction. LEVEL OF EVIDENCE: Prognostic Level II. See Instructions for Authors for a complete description of levels of evidence.

Medial Clamp Tine Positioning Affects Ankle Syndesmosis Malreduction.

OBJECTIVES: To determine whether the position of the medial clamp tine during syndesmotic reduction affected reduction accuracy. DESIGN: Prospective cohort. SETTING: Urban Level 1 trauma center. PATIENTS: Seventy-two patients with operatively treated syndesmotic injuries. INTERVENTION: Patients underwent operative fixation of their ankle syndesmotic injuries using reduction forceps. The position of the medial clamp tine was then recorded with intraoperative fluoroscopy. Malreduction rates were then assessed with bilateral ankle computerized tomography. MAIN OUTCOME MEASUREMENT: Fibular position within the incisura was measured with respect to the uninjured side to determine whether a malreduction had occurred. Malreductions were then analyzed for associations with injury pattern, patient demographics, and the location of the medial clamp tine. RESULTS: A statistically significant association was found between medial clamp position and sagittal plane syndesmosis malreduction. In reference to anterior fibular translation, there was a 0% malreduction rate in the 18 patients where the clamp tine was placed in the anterior third, a 19.4% malreduction rate in the middle third, and 60% malreduction rate in the posterior third (P = 0.006). In reference to posterior fibular translation, there was a 11.1% malreduction when clamp placement was in the anterior third, a 16.1% malreduction rate in the middle third, and 60% malreduction rate in the posterior third (P = 0.062). There were no significant associations between medial clamp position and coronal plane malreductions (overcompression or undercompression) (P = 1). CONCLUSIONS: When using reduction forceps for syndesmotic reduction, the position of the medial clamp tine can be highly variable. The angle created with off-axis syndesmotic clamping is likely a major culprit in iatrogenic malreduction. Sagittal plane malreduction appears to be highly sensitive to clamp obliquity, which is directly related to the medial clamp tine placement. Based on these data, we recommend placing the medial clamp tine in the anterior third of the tibial line on the lateral view to minimize malreduction risk. LEVEL OF EVIDENCE: Therapeutic Level IV. See Instructions for Authors for a complete description of levels of evidence.

Validation of an innovative method of shoulder range-of-motion measurement using a smartphone clinometer application.

BACKGROUND: An accurate and reliable measurement of shoulder range of motion (ROM) is important in the evaluation of the shoulder. A smartphone digital clinometer application is a potentially simpler method for measuring shoulder ROM. The goal of this study was to establish the reliability and validity of shoulder ROM measurements among varying health care providers using a smartphone clinometer application in healthy and symptomatic adults. METHODS: An attending surgeon, fellow, resident, physician assistant, and student served as examiners. Bilateral shoulders of 24 healthy subjects were included. Fifteen postoperative patients served as the symptomatic cohort. Examiners measured ROM of each shoulder, first using visual estimation and then using a goniometer and smartphone clinometer in a randomized fashion. RESULTS: The interobserver reliability among examiners showed significant correlation, with average intraclass correlation coefficient [ICC(2,1)] values of 0.61 (estimation), 0.69 (goniometer), and 0.80 (smartphone). All 5 examiners had substantial agreement with the gold standard in healthy subjects, with average ICC(2,1) values ranging from 0.62 to 0.79. The interobserver reliability in symptomatic patients showed significant correlation, with average ICC(2,1) values of 0.72 (estimation), 0.79 (goniometer), and 0.89 (smartphone). Examiners had excellent agreement with the gold standard in symptomatic patients, with an average ICC(2,1) value of 0.98. CONCLUSION: The smartphone clinometer has excellent agreement with a goniometer-based gold standard for measurement of shoulder ROM in both healthy and symptomatic subjects. There is good correlation among different skill levels of providers for measurements obtained using the smartphone. A smartphone-based clinometer is a good resource for shoulder ROM measurement in both healthy subjects and symptomatic patients.

Anterior cruciate ligament reconstruction femoral tunnel characteristics using an accessory medial portal versus traditional transtibial drilling.

PURPOSE: To evaluate anterior cruciate ligament femoral tunnel characteristics using an accessory medial (AM) portal and transtibial (TT) drilling. METHODS: Ten matched pairs of cadaveric knees underwent arthroscopic AM portal or TT femoral drilling with 8-mm reamers. All knees underwent computed tomography scanning and were evaluated for tunnel aperture area, shape as described by the length of the long and short axes, location of the tunnel relative to the anterior and inferior aspects of the articular surface with the knee in extension, tunnel angle in the coronal and axial planes, and tunnel length. RESULTS: The femoral tunnel aperture area was 50.5 ± 4.8 mm(2) for AM portal drilling and 51.9 ± 4.6 mm(2) for TT drilling (P = .5). The femoral tunnel aperture long axis was 8.5 ± 1.1 mm for AM portal drilling and 9.2 ± 1.3 mm for TT drilling (P = .2), and the short axis was 8.0 ± 0.5 mm for AM portal drilling and 8.0 ± 0.5 mm for TT drilling (P = .8). The femoral tunnel aperture was 5.0 ± 1.4 mm from the anterior wall for AM portal drilling and 9.9 ± 1.7 mm for TT drilling (P < .001), and it was 7.6 ± 2.4 mm from the inferior articular surface for AM portal drilling and 8.9 ± 2.2 mm for TT drilling (P = .2). The femoral tunnel orientation in the coronal plane was 42.1° ± 4.8° for AM portal drilling and 60.9° ± 6.7° for TT drilling (P < .001), and the orientation in the axial plane was 20.9° ± 4.4° for AM portal drilling and 22.7° ± 13.5° for TT drilling (P = .7). The femoral tunnel length was 35.6 ± 2.8 mm for AM portal drilling and 40.3 ± 7.9 mm for TT drilling (P = .1). CONCLUSIONS: The use of an AM portal creates a tunnel more anterior and more horizontal than tunnels created by a TT technique. CLINICAL RELEVANCE: The femoral tunnel characteristics may have an effect on the strain placed on the graft, the graft bending angle, whether enough graft can be placed into the tunnel, and, ultimately, the ability of the body to fully heal the graft.