髋关节置换中期失败的原因分析

Modes of medium failures after total hip arthroplasty in China： a single-center retrospective study

目的 分析髋关节置换术后中期失败的原因.方法 回顾性分析2007年1月至2012年12月解放军总医院骨科行翻修术的髋关节置换术后5～10年期间失败的病例137例.将失败原因分为感染,无菌性松动、脱位、假体周围骨折、假体问题、异位骨化、内衬磨损.结果 髋关节置换术后中期失败的原因,依次为无菌性松动（55.5％、76/137）,感染（31.4％、43/137）,内衬磨损（6.6％、9/137）,假体周围骨折（5.1％、7/137）,脱位（1.5％、2/137）.结论 髋关节初次置换早期失败的前三位原因分别是无菌性松动,感染和内衬磨损.

Objective To explore the modes of medium failures after total hip arthroplasty （THA） in China and compare our results with foreign countries.Methods Retrospective reviews were conducted for the causes of medium failures of 137 revision THAs between January 2007 and December 2013.The causes of failure included infection,aseptic loosening,dislocation,periprosthetic fracture,implant-related failure,heterotopic ossification and liner wear.Results The causcs in a decreasing order were aseptic loosening （55.5％,76/137）,infection （31.4％,43/137）,liner wear（6.6％,9/137）,periprosthetic fracture （5.1％,7/137） and dislocation （1.5％,2/137）.Conclusion The top three domestic causes of medium failure after primary THA are aseptic loosening,infection and liner wear.