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The Scientific World Journal
Volume 2014, Article ID 321080, 14 pages
http://dx.doi.org/10.1155/2014/321080
Research Article

Modelling and Analysis on Biomechanical Dynamic Characteristics of Knee Flexion Movement under Squatting

1School of Mechanical Engineering, Henan Polytechnic University, Jiaozuo 454003, China
2Department of Orthopedics, Shanghai 10th People's Hospital, Tongji University School of Medicine, Shanghai 200072, China
3Department of Orthopedics, Zhenjiang Jinshan Hospital, Zhenjiang 212001, China
4School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai 200240, China

Received 4 January 2014; Accepted 10 February 2014; Published 11 June 2014

Academic Editors: S. Hirokawa and B. Mody

Copyright © 2014 Jianping Wang et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

The model of three-dimensional (3D) geometric knee was built, which included femoral-tibial, patellofemoral articulations and the bone and soft tissues. Dynamic finite element (FE) model of knee was developed to simulate both the kinematics and the internal stresses during knee flexion. The biomechanical experimental system of knee was built to simulate knee squatting using cadaver knees. The flexion motion and dynamic contact characteristics of knee were analyzed, and verified by comparing with the data from in vitro experiment. The results showed that the established dynamic FE models of knee are capable of predicting kinematics and the contact stresses during flexion, and could be an efficient tool for the analysis of total knee replacement (TKR) and knee prosthesis design.