Journal
JOURNAL OF BIOMECHANICS
Volume 37, Issue 7, Pages 1019-1030Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.jbiomech.2003.11.022
Keywords
knee; FE model; in vivo; 3D kinematics; explicit FE; lower limb
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Funding
- NIAMS NIH HHS [AR46387] Funding Source: Medline
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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.
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