Anatomically-based musculoskeletal modeling: prediction and validation of muscle deformation during walking |
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Authors: | Katja Oberhofer Kumar Mithraratne Ngaire S Stott Iain A Anderson |
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Affiliation: | (1) The Bioengineering Institute, University of Auckland, 70 Symonds Street, Auckland, New Zealand;(2) Department of Surgery, University of Auckland, Auckland, New Zealand |
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Abstract: | Accurate modeling of the musculoskeletal system during motion is a challenging task that has not yet been solved. In this
paper, we outline and validate a free-form deformation method called the Host Mesh Fitting (HMF) technique for predicting
muscle deformation during walking of a subject-specific musculoskeletal model. 20 lower limb muscles were deformed according
to the HMF solution of a surrounding host mesh that resembled the skin boundary, resulting in a realistic walking simulation
of the anatomically-based model. The shape changes of five muscles were further validated by comparing the predicted deformations
with magnetic resonance image data in two lower limb positions.
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Keywords: | Host mesh fitting Free form deformation Gait analysis Magnetic resonance imaging |
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