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首页> 外文期刊>Journal of Biomechanics >In vivo tibiofemoral contact analysis using 3D MRI-based knee models
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In vivo tibiofemoral contact analysis using 3D MRI-based knee models

机译:使用基于3D MRI的膝关节模型进行体内胫股接触分析

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This paper quantified the motion of the tibiofemoral contact points during in vivo weight bearing flexion using MRI-based 3D knee models and two orthogonal fluoroscopic images. The contact points on the medial and lateral tibial plateau were calculated by finding the centroid of the intersection of the tibial and femoral cartilage layers and by using the bony geometry alone. Our results indicate that the medial femoral condyle remains in the central portion of the tibial plateau and the lateral condyle translates posteriorly with increasing flexion. Using the bony contact model increased the total translation of the medial and lateral condyles by 250 and 55%, respectively, compared to the cartilage contact model. These results suggest that using the bony geometry alone may not accurately represent the articular surfaces of the knee. Articular cartilage geometry may have to be used to accurately quantify tibiofemoral contact. (C) 2004 Elsevier Ltd. All rights reserved.
机译:本文使用基于MRI的3D膝关节模型和两个正交透视图像,对体内股负屈期间胫股接触点的运动进行了量化。通过找到胫骨和股骨软骨层相交的质心,并单独使用骨几何结构,可以计算出内侧和外侧胫骨平台的接触点。我们的结果表明,内侧股骨con保留在胫骨平台的中央部分,外侧con随着屈曲的增加而向后平移。与软骨接触模型相比,使用骨接触模型可使内侧和外侧con的总平移分别增加250和55%。这些结果表明,仅使用骨骼几何形状可能无法准确表示膝盖的关节表面。可能必须使用关节软骨的几何形状来准确地量化胫股接触。 (C)2004 Elsevier Ltd.保留所有权利。

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