后方软组织重建预防后路髋关节置换术后关节脱位

目的 探讨后方软组织重建对降低髋关节置换术后关节后脱住的预防作用。方法 73例患者经后入路行初次全髋关节置换术或人工股骨头置换术，术中将后方关节囊及外旋肌群经数个骨孔固定于股骨大转子后方的骨质上。术后进行6～24个月的随访。结果 该组患者术后来发生髋关节后脱位，患侧髋关节功能良好。结论 后方关节囊及外旋肌群与股骨大转子之间的完整性重建有助于降低初次后入路髋关节置换术后髋关节后脱位的发生率。

Effect of posterior soft tissue reconstruction in posterior approach for primary hip arthroplasty

Objective To explore the effect of reconstruction of the posterior capsule and short external rotators in prevention of postoperative posterior dislocation. Methods In 73 cases of primary hip arthroplasty, posterior capsular flap and short external rotators were reattached to the posterior border of the greater trochanter by several bone holes after replacement. The follow-up period was 11 months (ranging, 6~24 months). Results None of these patients sustained a posterior hip dislocation, and the joint function was satisfying. Based on Harris hip scores, most (95.9%) of the patients had good to excellent hip score. Conclusions Although there are many factors affecting dislocation in primary hip arthroplasty, this posterior capsulorrhaphy technique combined short external rotators repair may be helpful in the prevention of posterior dislocation of primary hip arthroplasty with a posterior approach.