股骨颈骨折空心钉固定术后股骨头坏死相关因素分析

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Abstract ObjectiveTo investigate the related factors of avascular necrosis of femoral head after cannulated screw fixation in patients with femoral neck fracture.Methods A retrospective study of 108 patients diagnosed with femoral neck fracture by closed reduction and percutaneous cannulated screw fixation between April 2014and February 2016，23 patients had femoral head necrosis (positive group) and 85 had no femoral head necrosis (negative group) in postoperative follow-up，and analyzed the possible related factors of the two groups.Results 21.30% of patients suffered femoral head osteonecrosis during the follow-up.Farden type of fractype (P＝0.01)，Body mass Index (P＝0.02) and three-dimensional reconstruction of femoral neck fracture in different directions were the risk factors of osteonecrosis of femoral head，but age，sex，whether preoperative traction，time to wait for surgery，full weight-bearing time，whether the impants removed，there was no significant difference between two groups(P＞0.05).Conclusion For the patients with femoral neck fracture，we should strictly grasp the indications before the operation of cannulated screw fixation，and adopt hip replacement in time for the patients with high osteonecrosis risk such as sensible fracture displacement and obese，appropriate weight loss after surgery was necessary.

Key words： femoral neck fracture hollow nail femoral head necrosis body mass index

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http://www.sygkzz.com/EN/ OR http://www.sygkzz.com/EN/Y2018/V24/I11/982

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