A new method to investigate in vivo knee behavior using a finite element model of the lower limb
A new method to investigate in vivo knee behavior using a finite element model of the lower limb
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DOI：
10.1016/j.jbiomech.2003.11.022
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发表时间：
2004-07-01
影响因子：
2.4
通讯作者：
Yang, KH
中科院分区：
文献类型：
--
作者：
Beillas, P;Papaioannou, G;Yang, KH
已经开发了几种有限元模型用于估计关节内部结构的机械响应，其中直接或间接的体内测量是困难的或不可能的。这些模型的预测质量在很大程度上取决于用于驱动它们的实验数据（例如载荷/位移）的质量。文献中也描述了使用隐式有限元技术来模拟涉及接触和大位移的问题时的数值问题。在这项研究中，一个独特的策略，结合高精度在体内三维运动学和下肢有限元模型的基础上显式有限元技术。该方法提出了一种分析技术，适用于动态加载条件（在单腿跳跃过程中的影响）。下肢模型的验证重点是整个模型和膝关节的响应，特别是对施加的3D股骨体内运动学和地面反作用力的响应。在这项研究中概述的方法介绍了一个通用的工具，在体内膝关节的行为研究。(C)2004爱思唯尔有限公司保留所有权利。
Several finite element models have been developed for estimating the mechanical response of joint internal structures, where direct or indirect in vivo measurement is difficult or impossible. The quality of the predictions made by those models is largely dependent on the quality of the experimental data (e.g. load/displacement) used to drive them. Also numerical problems have been described in the literature when using implicit finite element techniques to simulate problems that involve contacts and large displacements. In this study, a unique strategy was developed combining high accuracy in vivo three-dimensional kinematics and a lower limb finite element model based on explicit finite element techniques. The method presents an analytical technique applied to a dynamic loading condition (impact during hopping on one leg). The validation of the lower limb model focused on the response of the whole model and the knee joint in particular to the imposed 3D femoral in vivo kinematics and ground reaction forces. The approach outlined in this study introduces a generic tool for the study of in vivo knee joint behavior. (C) 2004 Elsevier Ltd. All rights reserved.