Muscle wrapping on arbitrary meshes with the heat method.

Area of Science:

• Biomechanics
• Computational anatomy
• Musculoskeletal modeling

Background:

• Muscle paths are crucial for accurate musculoskeletal simulations, influencing muscle length and force distribution.
• Existing methods often rely on simplified analytical surfaces for muscle wrapping, limiting accuracy with complex geometries.

Purpose of the Study:

• To develop and evaluate a novel method for muscle wrapping over arbitrary polygonal mesh surfaces.
• To enhance the accuracy, robustness, and efficiency of muscle path calculations in musculoskeletal simulations.

Main Methods:

• Utilizing Newton's method combined with discrete differential geometry for muscle wrapping.
• Employing precomputed distance fields to accelerate calculations involving shared wrapping surfaces.
• Implementing the method on polygonal mesh surfaces representing bones and anatomical structures.

Main Results:

• Demonstrated positive results in accuracy, robustness, and computational efficiency.
• The method allows for muscle wrapping over complex, arbitrary mesh geometries.
• A limitation identified was the lack of continuous path length changes in dynamic simulations.

Conclusions:

• The developed method represents a significant advancement for fast muscle wrapping on arbitrary meshes.
• This approach enhances the fidelity of musculoskeletal simulations by accommodating complex anatomical shapes.
• Further research is needed to address the continuity of path length in dynamic scenarios.