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[目的]探讨股骨粗隆间骨折经DHS内固定术治疗后骨折不愈合的危险因素.[方法]回顾性分析2012年2月～2014年2月在本院接受DHS内固定术治疗的412例股骨粗隆间骨折患者.依据骨折愈合情况,分为骨折愈合组(388例)和骨折不愈合组(24例).对影响骨折愈合的相关因素进行单因素及Logistic回归分析.[结果]412例患者均手术成功,随访1年,24例(5.83％)出现骨折不愈合.单因素及Logistic回归分析显示:年龄、螺钉深度、螺钉位置、矫正髋内翻、颈干角、骨折类型、Garden对线指数、合并骨质疏松是患者术后出现骨折不愈合的危险因素.[结论]年龄、手术操作情况、合并骨质疏松、骨折类型、Garden对线指数、颈干角是股骨粗隆间骨折DHS内固定术后骨折不愈合的危险因素.“,”[Objective] To investigate the risk factors of nonunion in intertrochanteric fracture after DHS fixation.[Method] A total of 412 cases of intertrochanteric fracture treated with DHS fixation in our hospital from February 2012 to February 2014 were retrospectively analyzed.Based on fracture healing status,patients were divided into fracture healing group (388 cases) and nonunion group (24 cases).The related factors of fracture healing were analyzed by univariate and Logistic regression analysis.[Result] All 412 cases were successfully operated,and patients were followed up for one year.Twenty-four cases (5.83％) with no-healing were noticed.Univariate and Logistic regression analysis results showed that age,screw depth,screw position,redress varus,neck shaft angle,fracture type,Garden on-line index as well as osteoporosis were the risk factors for nonunion.[Conclusion] Age,screw depth,screw position,redress varus,neck shaft angle,fracture type,Garden on-line index,and osteoporosis are the risk factors of nonunion in intertrochanteric fracture patient after DHS fixation.