Lengsfeld M, Rudig L, von Issendorff W D, Koebke J
Institut II für Anatomie der Universität zu Köln.
Unfallchirurgie. 1991 Dec;17(6):309-15. doi: 10.1007/BF02588301.
The attachments of the anterior and posterior horn of the menisci to the tibial plateau are of a most important functional value. At the medial meniscus the circumference is more widely configurated, because of the greater distance between anterior and posterior horns. The areas of sagittal cuts through the menisci slightly differ regarding medial and lateral side. A higher area momentum of inertia of the medial meniscus, related to a vertical axis within the examinated sagittal plane, is found. It derives from a geometrical distribution of partial areas more distant from the axis. The medial meniscus therefore has a higher stiffness against sagittal bending stress. Experiments and theoretical stress simulation prove these results. According to them, the medial meniscus is less mobile in comparison to the lateral. These findings are discussed as a basic geometrical cause for the higher incidence of injuries of the medial meniscus.
半月板前后角与胫骨平台的附着具有极其重要的功能价值。内侧半月板的周长构型更为宽广，这是因为前后角之间的距离更大。通过半月板的矢状切面在内侧和外侧的面积略有不同。在内侧半月板中，相对于所检查矢状面内的垂直轴，发现其面积惯性矩更高。这源于距该轴较远的局部区域的几何分布。因此，内侧半月板在抵抗矢状弯曲应力方面具有更高的刚度。实验和理论应力模拟证实了这些结果。据此，内侧半月板相比于外侧半月板活动度更小。这些发现被认为是内侧半月板损伤发生率较高的基本几何原因。
