A physiology based inverse dynamic analysis of human gait: potential and perspectives

F. De Groote, G. Pipeleers, I. Jonkers, B. Demeulenaere, C. Patten, J. Swevers and J. De Schutter

Computer Methods in Biomechanics and Biomedical Engineering, 2009, vol. 12, issue 5, 563-574

Abstract: One approach to compute the musculotendon forces that underlie human motion is to combine an inverse dynamic analysis with a static optimisation procedure. Although computationally efficient, this classical inverse approach fails to incorporate constraints imposed by muscle physiology.The present paper reports on a physiological inverse approach (PIA) that combines an inverse dynamic analysis with a dynamic optimisation procedure. This allows the incorporation of a full description of muscle activation and contraction dynamics, without loss of computational efficiency.A comparison of muscle excitations and MT-forces predicted by the classical and the PIA is presented for normal and pathological gait. Inclusion of muscle physiology primarily affects the rate of active muscle force build-up and decay and allows the estimation of passive muscle force. Consequently, it influences the onset and cessation of the predicted muscle excitations as well as the level of co-contraction.

Date: 2009
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DOI: 10.1080/10255840902788587

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