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An Automatic and Simplified Approach to Muscle Path Modeling

Article dans une revue avec comité de lecture
Author
LIVET, Claire
ROUVIER, Théo
1001017 Institut de Biomécanique Humaine Georges Charpak [IBHGC]
DUMONT, Georges
PONTONNIER, Charles

URI
http://hdl.handle.net/10985/20839
DOI
10.1115/1.4051870
Date
2021
Journal
Journal of Biomechanical Engineering

Abstract

This paper aims at proposing an automatic method to design and adjust simplified muscle paths of a musculoskeletal model. These muscle paths are composed of straight lines described by a limited set of fixed active via points and an optimization routine is developed to place these via points on the model in order to fit moment arms and musculotendon lengths input data. The method has been applied to a forearm musculoskeletal model extracted from the literature, using theoretical input data as an example. Results showed that for 75% of the muscle set, the relative root-mean-square error between literature theoretical data and the results from optimized muscle path was under 29.23% for moment arms and of 1.09% for musculotendon lengths. These results confirm the ability of the method to automatically generate computationally efficient muscle paths for musculoskeletal simulations. Using only via points lowers computational expense compared to paths exhibiting wrapping objects. A proper balance between computational time and anatomical realism should be found to help those models being interpreted by practitioners.

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