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Comparison between line and surface mesh models to represent the rotator cuff muscle geometry in musculoskeletal models

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  • Marion Hoffmann
  • Diane Haering
  • Mickaël Begon

Abstract

Accurate muscle geometry (muscle length and moment arm) is required to estimate muscle function when using musculoskeletal modelling. In shoulder, muscles are often modelled as a collection of independent line segments, leading to non-physiological muscles trajectory, especially for the rotator cuff muscles. To prevent this, a surface mesh model was developed and validated against 7 MRI positions in one participant. Mean moment arm errors was 11.4% for the line vs. 8.8% for the mesh model. While the model with independent lines led to some non-physiological trajectories, the mesh model gave lower misestimations of muscle lengths and moment arms.

Suggested Citation

  • Marion Hoffmann & Diane Haering & Mickaël Begon, 2017. "Comparison between line and surface mesh models to represent the rotator cuff muscle geometry in musculoskeletal models," Computer Methods in Biomechanics and Biomedical Engineering, Taylor & Francis Journals, vol. 20(11), pages 1175-1181, August.
    • Handle: RePEc:taf:gcmbxx:v:20:y:2017:i:11:p:1175-1181
    DOI: 10.1080/10255842.2017.1340463
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