Effect of muscle wrapping on model estimates of neck muscle strength |
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Authors: | Jessica Kruidhof Marcus G. Pandy |
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Affiliation: | 1. Department of Biomedical Engineering , University of Texas at Austin , 1 University Station C0800, Austin, TX, 78712, USA jkruidhof@mail.utexas.edu;3. Department of Biomedical Engineering , University of Texas at Austin , 1 University Station C0800, Austin, TX, 78712, USA;4. Department of Mechanical and Manufacturing Engineering , University of Melbourne , Melbourne, Vic., 3010, Australia |
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Abstract: | Of the computational models of the cervical spine reported in the literature, not one takes into account the changes in muscle paths due to the underlying vertebrae. Instead, all model the individual muscle paths as straight-line segments. The major aim of this study was to quantify the changes in muscle moment arm, muscle force and joint moment due to muscle wrapping in the cervical spine. Five muscles in a straight-line model of the cervical spine were wrapped around underlying vertebrae, and the results obtained from this model were compared against the original. The two models were then validated against experimental and computational data. Results show that muscle wrapping has a significant effect on muscle moment arms and therefore joint moments and should not be neglected. |
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Keywords: | Musculoskeletal modeling Moment Force Moment arm Neck injury |
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