The development of a dynamic, nonlinear finite-element model of a human leg is presented. The model is designed to accommodate large three-dimensional displacements and rotations, to accurately reflect the nonlinear stiffness characteristics of the knee joint, and to facilitate efficient stress-level calculations. Numerical examples are presented which demonstrate the nonlinear capabilities of the model. In addition, a brief example illustrates the ability of the model to respond to a complex loading history measured during a downhill skiing maneuver and to predict cross-sectional stress levels.
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Hight et al. (1979) studied this question.