Orthopaedic Trauma

Acknowledgment No abstract available

In Memoriam: David Gershuni, MD (1938 - 2020) No abstract available

Distal Femur Replacement Versus Surgical Fixation for the Treatment of Geriatric Distal Femur Fractures: A Systematic Review Objectives: The management of geriatric distal femur fractures is controversial, and both primary distal femur replacement (DFR) and surgical fixation (SF) are viable treatment options. The purpose of this study was to compare patient outcomes after these treatment strategies. Data Sources: PubMed, Embase, and Cochrane databases were searched for English language articles up to April 24, 2020, identifying 2129 papers. Study Selection: Studies evaluating complications in elderly patients treated for distal femur fractures with either immediate DFR or SF were included. Studies with mean patient age <55 years, nontraumatic indications for DFR, or SF with nonlocking plates were excluded. Data Extraction: Two studies provided Level II or III evidence, whereas the remaining 28 studies provided Level IV evidence. Studies were formally evaluated for methodological quality using established criteria. Treatment failure between groups was compared using an incidence rate ratio. Data Synthesis: Treatment failure was defined for both SF and arthroplasty as complications requiring a major reoperation for reasons such as mechanical failure, nonunion, deep infection, aseptic loosening, or extensor mechanism disruption. There were no significant differences in complication rates or knee range of motion between SF and DFR. Conclusions: SF and DFR for the treatment of geriatric distal femur fractures demonstrate similar overall complication rates. Given the available evidence, no strong conclusions on the comparative effectiveness between the 2 treatments can be definitively made. More rigorous prospective research comparing SF vs. DFR to treat acute geriatric distal femur fractures is warranted. Level of Evidence: Therapeutic Level IV. See instructions for authors for a complete description of levels of evidence.

Surgical and Nonoperative Management of Olecranon Fractures in the Elderly: A Systematic Review and Meta-Analysis Objectives: The aim of this comparative effectiveness study was to perform a meta-analysis of adverse events and outcomes in closed geriatric olecranon fractures, without elbow instability, after treatment with surgical or nonoperative management. Data Sources: PubMed, Web of Science, and Embase databases. Study Selection: Articles were included if they contained clinical data evaluating outcomes in patients ≥65 years of age with closed olecranon fractures, without elbow instability, treated surgically, or with nonoperative management. Data Extraction: Data regarding patient age, olecranon fracture type, fracture union, adverse events, reoperation, elbow range of motion, and surgeon and patient reported outcome measures were recorded according to intervention. The interventions included for analysis were tension band wire fixation, plate fixation, or nonoperative management. Data Synthesis: Separate random effects meta-analyses were conducted for each outcome according to intervention. Prevalence and 95% confidence intervals were calculated for dichotomous variables, whereas weighted means and confidence intervals were calculated for continuous variables. Conclusions: Comparable outcomes were achieved with surgical or nonoperative management of olecranon fractures in geriatric patients. Surgical intervention carried a high risk of reoperation regardless of whether plate or tension band wire fixation was used. Functional nonunion can be anticipated if nonoperative treatment is elected in low-demand elderly patients. Level of Evidence: Therapeutic Level IV. See Instructions for Authors for a complete description of levels of evidence.

Topical Vancomycin Powder Decreases the Proportion of Staphylococcus aureus Found in Culture of Surgical Site Infections in Operatively Treated Fractures Objectives: To determine whether patients with operatively treated fractures and surgical site infection after use of topical vancomycin powder have a lower proportion of Staphylococcus aureus infections than patients who did not receive topical vancomycin powder. Design: Retrospective cohort study. Setting: Level I trauma center. Patients: Treatment group: 10 of 133 patients (145 fractures) with surgical site infections who received intrawound vancomycin powder at the time of wound closure for fracture fixation. Control group: 175 patients who sustained deep surgical site infections during the same period but did not receive vancomycin powder. Intervention: Vancomycin powder or no vancomycin powder. Main Outcome Measurement: Proportion of patients' cultures positive for S. aureus. Results: The proportion of cultures positive for S. aureus was significantly lower in patients with surgical site infection who received vancomycin powder than in those who did not receive vancomycin powder (10% [1 of 10 patients in the treatment group] vs. 50% [87 of 175 patients in the control group]; P = 0.02). A trend was observed for a lower proportion of methicillin-resistant S. aureus (0% vs. 23%; P = 0.12). Conclusions: Vancomycin powder might alter the bacteriology of surgical site infections and decrease the proportion in culture of the most common organism typically present after fracture surgery infection. These findings suggest that the application of vancomycin powder might change the bacteriology of surgical site infections when they occur, regardless of the effect on overall infection rates. Although our bacteriology results are clinically and statistically significant, these findings must be confirmed in larger randomized controlled trials. Level of Evidence: Therapeutic Level III. See Instructions for Authors for a complete description of levels of evidence.

Vancomycin Powder Use in Fractures at High Risk of Surgical Site Infection Objectives: To determine if the use of intrawound vancomycin powder reduces surgical-site infection after open reduction and internal fixation of bicondylar tibial plateau, tibial pilon, and calcaneus fractures. Design: Retrospective analysis. Setting: Level I trauma center. Patients: All fractures operatively treated from January 2011 to February 2015 were reviewed; 583 high-risk fractures were included, of which 35 received topical vancomycin powder. A previously published prospectively collected cohort of 235 similar high-risk fractures treated at our center from 2007 through 2010 served as a second comparison group. Intervention: Topical vancomycin powder at wound closure. Main Outcome Measurements: Deep surgical-site infection. Analyses used both univariate comparison of all patients and 1:2 matching analysis using both nearest neighbor and propensity-based matching. Results: Compared with a control group of fractures treated during the same time period without vancomycin powder, the infection rate with vancomycin powder was significantly lower [0% (0/35) vs. 10.6% (58/548), P = 0.04]. Compared with our previously published historical infection rate of 13% for these injuries, vancomycin powder was also associated with significantly decreased deep surgical-site infection (0% vs. 13%, P = 0.02). These results agreed with the matched analyses, which also showed lower infection in the vancomycin powder group (0% vs. 11%–16%, P ≤ 0.05). Conclusions: Vancomycin powder may play a role in lowering surgical-site infection rates after fracture fixation. A larger randomized controlled trial is needed to validate our findings. Level of Evidence: Therapeutic Level III. See Instructions for Authors for a complete description of levels of evidence.

Systemic Absorption and Nephrotoxicity Associated With Topical Vancomycin Powder for Fracture Surgery Objectives: To determine whether using topical vancomycin powder in fracture surgery may result in low levels of vancomycin in the serum and not result in nephrotoxicity. Design: Prospective observational at a single site as a substudy of the VANCO trial. Setting: Single, large urban level I trauma center. Patients/Participants: Fifty-eight patients with tibial plateau and pilon fractures randomized to the treatment arm at the principal investigator's site. Intervention: Topical vancomycin powder (1000 mg) applied directly in the wound over all metal implants at the time of wound closure. Main Outcome Measurements: Serum vancomycin levels at 1 hour and 6–8 hours after surgery. Secondary outcomes included serum creatinine before surgery, a day after surgery, and at 2 weeks postoperatively and complete blood count at 2 weeks postoperatively. Results: Except in 2 patients who also received intravenous vancomycin, none of the study patients had detectable (>5 µg/mL) serum vancomycin levels at 1 hour and 6–8 hours after surgery. One patient with a history of elevation of serum creatinine had a minor increase of serum creatinine but had undetectable vancomycin levels. None of the other patients had a clinically significant increase in creatinine levels. Conclusions: Despite its relatively widespread usage, little data exist regarding the systemic levels and nephrotoxicity associated with the topical use of vancomycin powder in orthopaedic fracture surgery. These prospective data indicate that there seems to be little clinical concern regarding toxicity associated with systemic absorption of vancomycin powder in this specific clinical application. Level of Evidence: Therapeutic Level IV. See instructions for authors for a complete description of levels of evidence.

Intraoperative Tobramycin Powder Prevents Enterobacter cloacae Surgical Site Infections in a Rabbit Model of Internal Fixation Objectives: To evaluate the efficacy of intraoperative tobramycin powder in preventing surgical site infection (SSI) and implant colonization with Enterobacter cloacae in a rabbit fixation model. Gram-negative rods, particularly Enterobacter species, comprise an increasing percentage of SSI at our institution. Methods: Eighteen New Zealand White rabbits underwent surgical fixation of the left tibia with implantation of a plate and screws. The surgical site and implant were inoculated with 1 × 107 CFUs E. cloacae. The selected E. cloacae isolate was resistant to tobramycin and capable of forming biofilms. Nine rabbits received 125 mg tobramycin powder directly into the surgical site, overlying the implant. The control group was untreated. Fourteen days postinfection, the tibiae and implants were explanted. Radiographs were taken with and without the implants in place. One tibia from each group was examined after hematoxylin and eosin staining. The remaining tibiae and implants were morselized or sonicated, respectively, and plated on agar to determine infection burden. Data were analyzed with Fisher exact tests and Mann–Whitney U tests. Results: No bone infection or implant colonization occurred in the tobramycin-treated group. In the control group, 7 of 8 rabbits developed bone infections (P = 0.001), and 4 of 8 implants were colonized (P = 0.07). No gross disruption of the normal bone architecture was observed in either group. Conclusions: Intraoperative tobramycin powder applied at the time of contamination prevented bone infection with E. cloacae in this rabbit fixation model. The results are encouraging because the E. cloacae isolate was tobramycin-resistant, demonstrating the utility of intraoperative powdered antibiotics.

Comparison Between the Direct Anterior and Posterior Approaches for Total Hip Arthroplasty Performed for Femoral Neck Fracture Objectives: To compare 90-day and 1-year outcomes, including mortality, of femoral neck fracture patients undergoing total hip arthroplasty (THA) by direct anterior approach (DAA) versus posterior approach (PA). Design: Retrospective cohort. Setting: Level I Trauma Center. Patients: One hundred forty-three consecutive intracapsular femoral neck fractures treated with THA from 2010 to 2018. The minimum follow-up was 12 months, and the average follow-up was 14.6 months (12–72 months). Main Outcome Measures: Postoperative outcomes, including discharge ambulation, dislocation, periprosthetic joint infection, revision THA, and mortality at 90 days and 1 year after THA. Results: Of the 143 THA included, 44 (30.7%) were performed by DAA while 99 (69.3%) were performed by PA. In-hospital outcomes were similar between the cohorts. Compared with DAA patients, PA patients were more likely to ambulate without assistance preinjury (88.9% vs. 72.7%, P = 0.025) and be nonambulatory at the time of discharge (27.3% vs. 11.4%, P = 0.049). There were no significant differences in 90-day and 1-year postoperative outcomes between the DAA and PA groups, including dislocation, periprosthetic joint infection, periprosthetic fracture, mechanical complications, and revision surgery. Although there was no difference in mortality rate at 90 days, at 1-year follow-up the mortality rate was lower in the DAA group (0% vs. 11.1%, P = 0.018). Conclusions: Performing THA by DAA provides similar benefits in regards to medical and surgical outcomes compared with the PA for displaced femoral neck fracture. However, the DAA may lead to decreased 1-year mortality rates, possibly, because of improved early ambulation capacity that is an important predictor of long-term mortality. Level of Evidence: Therapeutic Level III. See Instructions for Authors for a complete description of levels of evidence.

Is Immediate Weight-Bearing Safe After Single Implant Fixation of Elderly Distal Femur Fractures? Objectives: To compare early complications in elderly patients with extra-articular distal femur fractures (DFFs) allowed to weight-bear as tolerated (WBAT) immediately versus patients prescribed initial touchdown weight-bearing (TDWB). Design: Retrospective cohort study. Setting: Level 1 academic trauma center. Patients: One hundred thirty-five patients 60 years or older who underwent surgical fixation of an extra-articular DFF, including the OTA/AO fracture classification of 33-A1-3, and periprosthetic fractures with a stable knee prosthesis (Lewis and Rorabeck type I or II) with at least 6 months follow-up. Intervention: Immediate WBAT or TDWB after surgical fixation of an extra-articular DFF with either an intramedullary nail or locked plate. Main Outcome Measurements: The primary outcome was a major adverse event within the first 6 months, defined as (1) early fixation failure or change in alignment leading to reoperation, (2) nonunion, or (3) deep infection. Secondary outcomes included postoperative inpatient length of stay, discharge disposition (secondary facility vs. home), malunion, mortality, and patient-reported outcomes. Results: The rate of early adverse events requiring reoperation was similar between the WBAT group (6, 10.7%) and the TDWB group (15, 19.0%; P = 0.23). There was no difference between groups with respect to length of stay, discharge disposition, malunion, and patient-reported outcomes. Conclusions: This study supports allowing carefully selected elderly patients, based on surgeon preference, to immediately weight-bear after operative fixation of an extra-articular DFF regardless of implant choice. Level of Evidence: Therapeutic Level III. See Instructions for Authors for a complete description of levels of evidence.

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Medicine by Alexandros G. Sfakianakis,Anapafseos 5 Agios Nikolaos 72100 Crete Greece,00302841026182,00306932607174,alsfakia@gmail.com,

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