股骨交锁髓内钉断钉原因探讨

Biomechanical analysis of the failure of the interlocking nail of femal

目的 探讨交锁髓内钉断裂的原因。方法 对 1998年至 2 0 0 1年 72例股骨干骨折作交锁髓内钉固定患者进行随访。结果 61例获得随访 ,断钉 5例 ,断钉发生在 4～ 9个月 ,3例交锁钉钉体断裂 ,2例锁钉发生断裂。结论 开放穿钉 ,过度分离骨膜 。

Objective To evaluate the reason of failure of the interlocking nail.Methods From1998-2001, 72 patients with femur fractures were treated with the interlocking nail.Results 61 cases were followed-up,there were 5 breakages in the locking nail. The failure occurred after operation from 4～9 months.And 3 cases were at the middle of the nail.2 cases were at the first screw of the distal of the fracture.Conclusion The reason of breakage concluded open operation,too much separation of the periosteum,too early full weight bearing and unfit function exercise.