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On the complexity of biomechanical models used for neuroprosthesis development


R. Riener, T. Fuhr, J. Schneider

International Journal of Mechanics in Medicine and Biology, no. 2, pp. 389-404

The use of mathematical models has the potential to enhance the development of lower extremity neuroprosthesis (NP) based on Functional Electrical Simulation (FES). The choice of model complexity is not trivial when designing a model for FES control design. On the one hand, a comprehensive model might be useful to account for the many different biomechanical and neurophysiological effects that can be observed during FES-induced movements. On the other hand, too complex models are difficult to be utilized in and identified for NP applications. In this paper we discuss the disadvantages of too complex models, and propose potential simplifications on the basis of existing models that are commonly used to describe muscle activation, muscle contraction and body-segmental motion. The obtained model approach is simple enough to be identified, and sufficiently comprehensive to describe most of the relevant effects that occur during FES-induced locomotion.


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% Autogenerated BibTeX entry
@Article { RieFuh:2002:IFA_2272,
    author={R. Riener and T. Fuhr and J. Schneider},
    title={{On the complexity of biomechanical models used for
	  neuroprosthesis development}},
    journal={International Journal of Mechanics in Medicine and Biology},
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