Djerf K, Gillquist J
Acta Orthop Scand. 1987 Apr;58(2):97-103. doi: 10.3109/17453678709146448.
The load transfer from the pelvis to the femur in extension and 45 degrees of flexion was examined in normal hips and hips replaced with 11 different prostheses. The cadaver specimens were mounted in a jig and the load patterns recorded by strain gauges attached to critical points determined in a pilot study, with the aid of a photoelastic coating. All the prostheses except an "isoelastic" model showed marked reduction of strain in the calcar area compared with the normal femur. A collar increased the strain to about 40 per cent of normal. No significant difference was noted between curved and straight stems. There were no major differences between the prostheses on loading in flexion.
在正常髋关节以及置换了11种不同假体的髋关节中，研究了伸展位和屈曲45度时从骨盆到股骨的负荷传递情况。将尸体标本安装在夹具中，并借助光弹性涂层，通过附着在初步研究中确定的关键点上的应变片记录负荷模式。除了一种“等弹性”模型外，所有假体在股骨矩区域的应变与正常股骨相比均显著降低。一个颈环使应变增加到正常的约40%。弯曲柄和直柄之间未发现显著差异。假体在屈曲位加载时没有重大差异。
