Development of a finite element musculoskeletal model with the ability to predict contractions of three-dimensional muscles

Li, Junyan, Lu, Yongtao, Miller, Stuart C., Jin, Zhongmin and Hua, Xijin (2019) Development of a finite element musculoskeletal model with the ability to predict contractions of three-dimensional muscles. Journal of Biomechanics, 94 . pp. 230-234. ISSN 0021-9290 (doi:10.1016/j.jbiomech.2019.07.042)

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Abstract

Representation of realistic muscle geometries is needed for systematic biomechanical simulation of musculoskeletal systems. Most of the previous musculoskeletal models are based on multibody dynamics simulation with muscles simplified as one-dimensional (1D) line-segments without accounting for the large muscle attachment areas, spatial fibre alignment within muscles and contact and wrapping between muscles and surrounding tissues. In previous musculoskeletal models with three-dimensional (3D) muscles, contractions of muscles were among the inputs rather than calculated, which hampers the predictive capability of these models. To address these issues, a finite element musculoskeletal model with the ability to predict contractions of 3D muscles was developed. Muscles with realistic 3D geometry, spatial muscle fibre alignment and muscle-muscle and muscle-bone interactions were accounted for. Active contractile stresses of the 3D muscles were determined through an efficient optimization approach based on the measured kinematics of the lower extremity and ground force during gait. This model also provided stresses and strains of muscles and contact mechanics of the muscle-muscle and muscle-bone interactions. The total contact force of the knee predicted by the model corresponded well to the in vivo measurement. Contact and wrapping between muscles and surrounding tissues were evident, demonstrating the need to consider 3D contact models of muscles. This modelling framework serves as the methodological basis for developing musculoskeletal modelling systems in finite element method incorporating 3D deformable contact models of muscles, joints, ligaments and bones.

Item Type: Article
Research Areas: A. > School of Science and Technology
Item ID: 27645
Notes on copyright: © 2019. This author's accepted manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/
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Depositing User: Junyan Li
Date Deposited: 25 Sep 2019 12:59
Last Modified: 23 Nov 2019 16:38
URI: https://eprints.mdx.ac.uk/id/eprint/27645

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