Liu Fan, Lü Hou-Shan, Min Zhi-Song
Department of Orthopedics, People's Hosptal, Peking Medical University, Beijing, China.
Zhonghua Yi Xue Za Zhi. 2008 Mar 25;88(12):809-11.
To investigate the influence of patella tracking and thickness for muscle strength after patellar resurfacing in total knee arthroplasty (TKA).
Quadriceps muscle strength of 100 cases 134 knees with osteoarthritis were analysed with isokinetic testing and extension lag after patellar resurfacing in TKA. Result was analyzed statistically through T test.
Significant decreasing of quadriceps muscle strength and endurance were detected on mal-patellofemoral tracking (61 +/- 24, P <0.01) and improper position of patella prosthesis (56 +/- 33, P < 0.01). Anterior knee pain with patella resurfacing was mainly associated with mal-patellofemoral tracking.
Asymptomatic weakness of quadriceps muscle was mainly associated with improper patella thickness.
探讨全膝关节置换术（TKA）中髌骨表面置换后髌骨轨迹和厚度对肌肉力量的影响。
对100例134膝骨关节炎患者在TKA髌骨表面置换后的股四头肌力量进行等速测试分析，并测量伸展滞后情况。结果通过T检验进行统计学分析。
在髌股关节轨迹不良（61±24，P<0.01）和髌骨假体位置不当（56±33，P<0.01）时，股四头肌力量和耐力显著下降。髌骨表面置换后的前膝疼痛主要与髌股关节轨迹不良有关。
股四头肌无症状性无力主要与髌骨厚度不当有关。
