Objective To verify the clinical effects and biomechanics in the treatment of Interochanterice Femoral Fractures (IFF) with Dynamic Hip Screw (DHS) Internal Fixation.

• 探讨动力髋螺钉 ( Dynamic hip screw,DHS)内固定治疗股骨转子间骨折的临床效果和生物力学机理。