{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,3,18]],"date-time":"2026-03-18T11:25:22Z","timestamp":1773833122815,"version":"3.50.1"},"reference-count":33,"publisher":"SLACK, Inc.","issue":"12","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Orthopedics"],"published-print":{"date-parts":[[2014,12]]},"abstract":"<jats:p>Femoral head necrosis is a rare but devastating complication following femoral neck fracture. The reported incidence of avascular necrosis after femoral neck fracture fixation varies widely, and there is no consensus regarding its risk factors. The aim of this study was to analyze the risk factors for femoral head necrosis after internal fixation in femoral neck fracture. This retrospective study included 166 patients with femoral neck fractures treated with surgical reduction and internal fixation at the authors\u2019 institution from January 2004 to December 2008. Eight patients died for reasons unrelated to the surgery, and 12 patients were lost to follow-up. The remaining 146 patients (146 fractures) were followed until union or until conversion to total hip arthroplasty. The patients included 61 males and 85 females with an average age of 47.5 years (range, 18\u201368 years). The authors analyzed the following factors: age, sex, Garden classification, reduction quality, surgical methods, injury-to-surgery interval, preoperative traction, weight-bearing time, and implant removal. All patients were followed for a mean of 52 months (range, 6\u201390 months). The incidence of femoral head necrosis was 14.4% (21\/146). Garden classification (<jats:italic>P<\/jats:italic>=.012), reduction quality (<jats:italic>P<\/jats:italic>=.008), implant removal (<jats:italic>P<\/jats:italic>=.020), and preoperative traction (<jats:italic>P<\/jats:italic>=.003) were significantly associated with femoral head necrosis. Patient age (<jats:italic>P<\/jats:italic>=.990), sex (<jats:italic>P<\/jats:italic>=.287), injury-to-surgery interval (<jats:italic>P<\/jats:italic>=.360), weight-bearing time (<jats:italic>P<\/jats:italic>=.868), and surgical methods (<jats:italic>P<\/jats:italic>=.987) were not significantly associated with femoral head necrosis. In multivariate logistic regression analysis, implant removal was not a significant risk factor for femoral head necrosis development (<jats:italic>P<\/jats:italic>=.498). Garden classification, reduction quality, and preoperative traction had a significant effect on femoral head necrosis development. 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