Related Experiment Video
Updated: May 31, 2026
09:32
Subject-specific Musculoskeletal Model for Studying Bone Strain During Dynamic Motion
Published on: April 11, 2018
3D Fiber-Reinforced Forward Musculoskeletal Modeling of the Lower Limb Using HD-sEMG and CFD-FE Coupling
Rongwu Lai1,2, Yongtao Lyu2, Jiaxuan Li1
1School of Mechanical Engineering, Dalian University of Technology, Dalian, 116024, China.
Annals of Biomedical Engineering
|May 29, 2026
Summary
This study developed a novel musculoskeletal modeling framework linking electrophysiological signals to muscle mechanics. The approach enables accurate, subject-specific simulations of muscle function for applications in medicine and biomechanics.
Area of Science:
- Biomechanics
- Musculoskeletal modeling
- Computational biology
Background:
- Accurate 3D muscle mechanics are vital for physics-informed digital twins.
- Current models often lack direct links between electrophysiology and muscle deformation.
Purpose of the Study:
- Develop a forward musculoskeletal modeling framework.
- Directly link electrophysiological activation to 3D muscle deformation and force transmission.
Main Methods:
- Reconstructed subject-specific 3D muscle geometry and fiber architecture.
- Mapped HD-sEMG data to drive active muscle contraction.
- Implemented an anisotropic hyperelastic model in Abaqus for muscle behavior simulation.
Main Results:
- Framework reproduced realistic muscle deformation and fiber-level stress-strain distributions.
- Simulations showed coordinated joint motion driven by muscle activation.
- Predicted hip kinematics agreed with motion capture data.
Conclusions:
- Coupling HD-sEMG with 3D muscle mechanics overcomes conventional model limitations.
- Enables subject-specific predictive simulation of muscle function.
- Provides a foundation for surgical planning and rehabilitation analysis.
