Objective To investigate the effect of the biomechanics on the proximal femur when the lesser trochanter is defected.Methods The cadaver femur has been made to lesser trochanteric fracture.

• 目的探讨股骨小粗隆缺损后对股骨上端生物力学的影响,分析加压滑动鹅颈钉治疗股骨粗隆间骨折失败的原因,探求防止髋内翻的方法。