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首页> 外文期刊>The Journal of arthroplasty >Patellar contact forces with and without patellar resurfacing in total knee arthroplasty.
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Patellar contact forces with and without patellar resurfacing in total knee arthroplasty.

机译：全膝关节置换术中有或没有pa骨表面置换的facing骨接触力。

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摘要

Patellar contact forces were measured in 7 fresh-frozen cadaver knees during continuous flexion-extension cycling for the normal knee and after total knee arthroplasty without and with patellar resurfacing using 2 prosthesis systems with different designs for the femoral and patellar components. Analysis of variance with specimen as a repeated measure was used to examine the effect of contact surface. When compared to normal knees, total knee arthroplasty without patellar resurfacing resulted in no change in patellar contact forces. The magnitude of the inferosuperior patellar shear force increased significantly after patellar replacement with an oval, biconcave patellar component and increased further after replacement with an oval, domed patellar component. There were no significant changes in the mediolateral and anteroposterior contact force components after patellar replacement.
机译：在正常膝关节连续屈伸运动期间以及不进行或不进行pa骨表面置换的全膝关节置换术后，使用2种不同设计的股骨和pa骨假体系统，在7个新鲜冷冻的尸体膝盖中测量骨接触力。用样品的方差分析作为重复测量来检查接触表面的影响。与正常膝盖相比，不进行pa骨表面置换的全膝关节置换术不会导致pa骨接触力的改变。 with骨被椭圆形双凹pa骨组件替代后，上pa骨剪切力的大小显着增加，而椭圆形，圆顶形pa骨组件替代后，further骨下部剪切力的大小进一步增加。 replacement骨置换后，后外侧和前后接触力分量无明显变化。

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