全膝关节置换术后髌骨弹响的原因及对策

[目的]研究全膝关节置换术后髌骨弹响的原因，并探讨相应的对策。[方法]自2001年1月～2004年11月，对57例（89膝）行全膝关节置换术，术中发生髌骨弹响14膝，分析发生原因，采取处理措施。[结果]髌骨弹响是各种原因所致的髌股关节轨迹异常所致，包括髁间窝型和滑车沟型。[结论]全膝关节置换应重视髌股关节问题，采用正确的截骨和假体安装技术，完善假体设计，完全可以避免髌骨弹响的发生。

Reason and management of patellar clunk syndrome after total knee replacement

[Objective]To find out the reason of patellar clunk syndrome after total knee replacement and define its countermeasure.[Method]From January 2001 to December 2004,total knee replacements were performed on 57 cases(82 knees).Patellar clunk syndromes were found in 14 knees.The reason was analyzed.[Result]The reason of patellar clunk syndrome was abnormality of patellofemoral tracking,including type intercondylar notch and type trochlear groove.[Conclusion]The problem of patellofemoral joint is very important in total knee replacement.With adopting accurate technique of cutting and component implantation,perfecting the design of prostheses,patellar clunk syndrome could be avoided completely.