Closed Reduction Percutaneous Pinning Versus Open Reduction With Plate and Screw Fixation in Management of Unstable Proximal Phalangeal Fractures: A Systematic Review and Meta-analysis.

BACKGROUND: Proximal phalanx fractures are common, with surgical fixation indicated for unstable fractures. Traditionally, closed reduction percutaneous pinning (CRPP) resulted in decreased stiffness and tendon irritation compared to open reduction internal fixation (ORIF). We hypothesized that more recent studies would have more similar outcomes to CRPP. The purpose of this study was to compare CRPP and ORIF in terms of range of motion, Disabilities of the Arm, Shoulder, and Hand (DASH) scores, and complications. METHODS: Four electronic databases were queried from 2010 to present. Following Preferred Reporting Items for Systematic Reviews and Meta-Analyses guidelines, two independent reviewers performed a two-step review process to identify relevant articles. Patient demographics, total active motion (TAM), DASH, and complications were extracted. The methodological quality of each study included was assessed independently. Meta-analysis was performed for comparative trials. RESULTS: Fourteen studies met inclusion criteria including four comparative studies: Thirteen studies included TAM. The weighted average TAM was 228 ± 34° for CRPP and 223 ± 32° for ORIF (P = .07 with 95% confidence interval (CI), -0.5 to 10.5). Seven studies evaluated DASH scores; weighted average was 8.2 ± 8.9 for CRPP and 11.7 ± 6.5 for ORIF (P < .01 with 95% CI, 1.8-5.2). Two studies directly compared CRPP to ORIF, favoring ORIF for both TAM with d = 1.07 and DASH with d = 0.23. Rates of tenolysis or hardware removal were higher for ORIF (P < .01). CONCLUSIONS: New literature suggests more equipoise with regard to treatment of proximal phalanx fracture with CRPP versus ORIF. TYPE OF STUDY/LEVEL OF EVIDENCE: Meta-analysis, Level II.

Hip Manipulation Under Anesthesia for Post-Hip Arthroscopy Pericapsular Scarring: Indications and Techniques.

Hip arthroscopy has become an increasingly common procedure with expanding indications over the last several decades. With the increase in number of procedures performed a complication profile has emerged, although there is yet to be a formal classification system for complications. The most cited complications include lateral femoral cutaneous nerve neuropraxia, other sensory deficits, chondral or labral iatrogenic damage, superficial infection and deep vein thrombosis. One complication that has not yet been well documented in the literature is pericapsular scarring/adhesions resulting in decreased hip range of motion and function. If this complication is noted to persist after adequate impingement resection and a rigorous post-operative physical therapy regimen, the senior author has addressed this with a hip manipulation under anesthesia. Therefore, this techniques paper aims to describe pericapsular scarring as a post hip-arthroscopy condition which may cause pain and demonstrate our technique to address this diagnosis through hip manipulation under anesthesia.

K-wire Versus Screw Fixation in Displaced Lateral Condyle Fractures of the Humerus in Children: A Multicenter Study of 762 Fractures.

INTRODUCTION: Lateral humeral condyle fractures account for 12% to 20% of all distal humerus fractures in the pediatric population. When surgery is indicated, fixation may be achieved with either Kirschner-wires or screws. The literature comparing the outcomes of these 2 different fixation methods is currently limited. The purpose of this study is to compare both the complication and union rates of these 2 forms of operative treatment in a multicenter cohort of children with lateral humeral condyle fractures. METHODS: This retrospective study was performed across 6 different institutions. Data were retrospectively collected preoperatively and 6 weeks, 3, 6, and 12 months postoperatively. Patients were divided into 2 cohorts based on the type of initial treatment: K-wire fixation and screw fixation. Statistical comparisons between these 2 cohorts were performed with an alpha of 0.05. RESULTS: There were 762 patients included in this study, 72.6% (n=553) of which were treated with K-wire fixation. The mean duration of immobilization was 5 weeks in both cohorts, and most patients in this study demonstrated radiographic healing by 11 weeks postoperatively, regardless of treatment method. Similar reoperation rates were seen among those treated with K-wires and screws (5.6% vs. 4.3%, P =0.473). Elbow stiffness requiring further intervention with physical therapy was significantly more common in those treated with K-wires compared with children treated with screws (21.2% vs. 13.9%, P =0.023) as was superficial skin infection (3.8% vs. 0%, P =0.002), but there was no significant difference in nonunion rates between the two groups (2.4% vs. 1.3%, P =1.000). CONCLUSION: We found similar success rates between K-wire and screw fixation in this patient population. Contrary to previous studies, we did not find evidence that treatment with screw fixation decreases the likelihood of experiencing nonunion. However, given the unique complications associated with K-wire fixation, such as elbow stiffness and superficial skin infection, the treatment with screw fixation remains a reasonable alternative to K-wire fixation in these patients. LEVEL OF EVIDENCE: Level III-retrospective comparative study.

Analysis of the OITE Oncology Section: An Updated Review of Years 2013 to 2019.

OBJECTIVES: The importance of the Orthopaedic In-Training Examination (OITE) is well documented. The purpose of this study is to provide an updated analysis of the oncology section compared to the review by Frassica et al. from 2002 to 2006, as a means to provide insight into more focused resident study. DESIGN: This study is a retrospective database review using published OITE exams from years 2013 to 2019. Methods were based off a previous review by Frassica et al. where oncology-related questions were analyzed for underlying diagnosis, benign versus malignant condition, imaging and histology provided, and genes/translocations tested. Questions were classified by category and taxonomy. RESULTS: Oncology-related questions per exam ranged from 19 (7%) to 23 (8.4%) of total questions, which is fewer than years 2002 to 2006. Twenty malignant and 27 benign entities were tested with malignant conditions tested at a higher rate of 1.3:1 versus benign. Eighteen combinations of imaging modalities were provided for analysis versus 11 from 2002 to 2006. With regard to taxonomy, the average number of questions per classification ranged from 2.4 to 5.4. The least common classification tested was treatment modality and the most commonly tested classification was treatment from diagnosis (taxonomy 3). Previously, tumor knowledge (taxonomy 1) was most tested with an average of 8.8 questions per exam. 12 questions were directly related to genes and translocations across all years. CONCLUSIONS: Oncology questions made up a smaller percentage of the OITE exam than previous years, although more conditions were tested using more imaging combinations, necessitating a wider range of knowledge. However, malignant conditions continue to be tested more commonly. There has been a shift toward Taxonomy 3 level questions, indicating a higher level of thought processing required from residents as opposed to recall. Additionally, genes and translocations became more commonly tested throughout the most recent analysis, indicating a focus for future years of study.

Masquelet technique: The effect of altering implant material and topography on membrane matrix composition, mechanical and barrier properties in a rat defect model.

The Masquelet technique is a surgical procedure to regenerate segmental bone defects. The two-phase treatment relies on the production of a vascularized foreign-body membrane to support bone grafts over three times larger than the traditional maximum. Historically, the procedure has always utilized a bone cement spacer to evoke membrane production. However, membrane formation can easily be effected by implant surface properties such as material and topology. This study sought to determine if the membrane's mechanical or barrier properties are affected by changing the spacer material to titanium or roughening the surface finish. Ten-week-old, male Sprague Dawley rats were given an externally stabilized, 6 mm femur defect which was filled with a pre-made spacer of bone cement (PMMA) or titanium (TI) with a smooth (∼1 µm) or roughened (∼8 µm) finish. After 4 weeks of implantation, the membranes were harvested, and the matrix composition, tensile mechanics, shrinkage, and barrier function was assessed. Roughening the spacers resulted in significantly more compliant membranes. TI spacers created membranes that inhibited solute transport more. There were no differences between groups in collagen or elastin distribution. This suggests that different membrane characteristics can be created by altering the spacer surface properties. Surgeons may unknowingly effecting membrane formation via bone cement preparation techniques.