fractures of the proximal femur treated with a Gamma nail? Diego B,José P, Esteban L,et al: Implant breakage, a plication with the Gamma nail A review of 843 fractures of the proximal femur treated with a Gamma nail. Acta Orthop. Belg., 2004, 70, 435-443? 2.16%----椎弓根螺钉系统断钉率(例数)? 翁习生,邱贵兴, 李军伟等,椎弓根螺钉翻修术。中华骨科杂志, 2004 ,24(9)Р Sommer C, Gautier E, Muller M, et al. First clinical results of the pression Plate (LCP). Injury. 2003;34(Suppl 2):B43–54.? 4.34%---- LCP breakage in 2 of 46 distal femur fractures? Vallier HA, Hennessey TA, Sontich JK, et al. Failure of LCP condylar plate fixation in the distal part of the femur. A report of six cases. J Bone Joint Surg Am. 2006;88:846–853.Р内植物断裂的原因Р患者方面的问题?医生方面的问题?内植物本身的问题Р患者方面问题Р 骨折不愈合,内植物疲劳折断? 过度负重,超过内植物极限? 不遵医嘱,过早负重? 意外摔倒、暴力等? 锻炼方式不当或粗暴? 应该取出内植物时未取出