A new technique to measure the dynamic contact pressures on the Tibial Plateau
A new technique to measure the dynamic contact pressures on the Tibial Plateau
复制标题
DOI：
10.1016/j.jbiomech.2008.04.024
复制
发表时间：
2008-07-19
影响因子：
2.4
通讯作者：
Maher, Suzanne A.
中科院分区：
文献类型：
--
作者：
Cottrell, Jocelyn M.;Scholten, Paul;Maher, Suzanne A.
对弯月面载荷传递作用的研究仅限于静态实验和分析方法。这项研究的目的是发展。在实验技术中，允许在动态生理载荷下测量尸体膝关节胫骨平台的接触压力。因此，我们适应负载控制的膝关节模拟器接受尸体羊膝，编程模拟器与羊步态运动学数据，并利用压力传感器阵列来测量步态过程中外侧胫骨平台上的接触压力分布。该技术应用于6个绵羊膝关节，并在完整和切除后进行测试。半月板切除术导致平均接触压力增加267%。峰值接触压力增加117%，接触面积减少80%。所有这些都是在步态周期中的最大峰值接触应力点处测量的。设想本文开发的实验模型将允许在更昂贵和耗时的动物模型之前筛选候选材料。(C)2008爱思唯尔有限公司保留所有权利。
Studies of the load transfer role of the meniscus have been limited to static experimental and analytical approached. The objective of this study was to develop.-in experimental technique to allow the contact pressure Oil the tibial plateau of cadaveric knees to be measured under dynamic physiological loads. Accordingly, we adapted a load-controlled knee joint simulator to accept a cadaveric sheep knee, programmed the simulator with sheep gait kinematics data, and utilized a pressure sensor array to measure the contact pressure distribution on the lateral tibial plateau during gait. The technique was applied to six sheep knees that were tested intact and after meniscectomy. Meniscectomy resulted in a 267% increase in average contact pressure. a 117% increase in peak contact pressure, and an 80% decrease in contact area. all measured at the point of maximum peak contact stress in the gait cycle. It is envisaged that the experimental model herein developed will allow for the screening of candidate materials prior to more expensive and time-consuming animal models. (C) 2008 Elsevier Ltd. All rights reserved.