Unicompartmental knee arthroplasty (UKA) and bicompartmental knee arthroplasty (BCA) have been associated with improved functional outcomes compared to total knee arthroplasty (TKA) in suitable patients, although the reason is poorly understood. The aim of this study was to measure how the different arthroplasties affect knee extensor function.

中文翻译：

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单室，双室和全膝关节置换术的伸肌效率。

与全膝关节置换术（TKA）相比，单室膝关节置换术（UKA）和双室膝关节置换术（BCA）与改善的功能结局相关，尽管原因尚不清楚。这项研究的目的是测量不同的关节置换术如何影响膝关节伸肌功能。