Objective: To study the clinical outcomes and the reasons of complications of treatment of peritrochanteric fracture of the femur with the dynamic hip screw(DHS).

目的：探讨动力髋螺钉（DHS）治疗股骨转子周围骨折的疗效及所致并发症的原因。

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AIM to discuss the effect and influence factors operative of dynamic hip screw (DHS) internal fixation in treatment of intertrochanteric fracture.

目的探讨动力髋关节螺钉内固定治疗股骨粗隆间骨折效果、影响因素及操作技术。

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Objective To compare the treatment of femoral intertrochanteric fractures of the aged patients by expandable proximal femoral nail (EPFN) and dynamic hip screw (DHS).

目的比较可膨胀股骨近端髓内钉(EPFN)与动力髋螺钉(DHS)治疗老年股骨粗隆间骨折的临床效果。

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