Comparison between line and surface mesh models to represent the rotator cuff muscle geometry in musculoskeletal models
Computer methods in BiomeChaniCs and BiomediCal engineering, 2017•Taylor & Francis
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 …
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 …
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.
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