Mavcic B, Antolic V, Brand R, Iglic A, Ipavec M, Kralj-Iglic V, Pedersen D R
Department of Orthopedic Surgery, Clinical Center, Ljubljana, Slovenia.
Pflugers Arch. 2000;439(3 Suppl):R213-4.
The size and the shape of the weight bearing area in adult human hips depend on the forces acting in the hip and therefore change during the body motion. In this work the size and the shape of the weight bearing area in several phases of gait are estimated. The forces acting in the hip were determined through laboratory measurements and analyzed by mathematical models. The dysplastic hips are distinguished from the normal ones by a smaller center-edge angle of Wiberg while the time course of the forces acting in the hip is assumed to be the same in both cases. It is shown how radial articular stress is distributed over the weight bearing area in both cases. In normal human hips the weight bearing area occupies a rather large portion of the acetabulum-femoral head contact area while in dysplastic hips stress distribution is unfavourably concentrated in a smaller weight bearing area.
成年人体髋关节负重区域的大小和形状取决于髋关节所承受的力，因此会在身体运动过程中发生变化。在这项研究中，我们估算了步态几个阶段中负重区域的大小和形状。通过实验室测量确定作用于髋关节的力，并采用数学模型进行分析。发育不良的髋关节与正常髋关节的区别在于Wiberg中心边缘角较小，而假定两种情况下作用于髋关节的力随时间的变化过程相同。研究展示了两种情况下径向关节应力在负重区域的分布情况。在正常人体髋关节中，负重区域占据髋臼-股骨头接触面积的相当大一部分，而在发育不良的髋关节中，应力分布不利地集中在较小的负重区域。
