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Sensing Muscle Deformation for Upper-Limb Prosthetic Control: a Narrative Review.

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Updated: Jul 23, 2026

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Optimizing the Myokinetic Interface: A Finite Element Model to Predict Displacement in Amputated Muscles.

Flavia Paggetti, Marta Gherardini, Alessandro Lucantonio

    IEEE ... International Conference on Rehabilitation Robotics : [Proceedings]
    |July 11, 2025
    PubMed
    Summary

    A new finite element model accurately predicts muscle displacement for myokinetic interfaces, crucial for prosthetic control. This tool aids surgical planning and enhances prosthetic device design.

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    Area of Science:

    • Biomechanics
    • Biomedical Engineering
    • Rehabilitation Engineering

    Background:

    • A novel myokinetic interface decodes user intent for prosthetic control by tracking implanted magnet displacement within muscles.
    • Optimal magnet placement is critical for prosthetic control signal range and stability, necessitating preoperative prediction of muscle displacement.

    Purpose of the Study:

    • To develop and validate a finite element model for estimating individual muscle displacement.
    • To provide a tool for optimizing surgical implantation and prosthetic control strategies.

    Main Methods:

    • Developed a finite element model of pennate muscles.
    • Calibrated and validated the model using healthy muscle geometries and in vivo measurements.
    • Assessed model performance on amputated muscles by comparing simulations with in vivo data.

    Main Results:

    • The model demonstrated good agreement with experimental data for both healthy and amputated muscles.
    • Average simulation errors were below 0.7 mm for healthy muscles and 1.7 mm for amputated muscles.
    • The model accurately predicted muscle displacement, crucial for myokinetic interface development.

    Conclusions:

    • The developed finite element model is a valuable tool for optimizing surgical procedures and control strategies for myokinetic interfaces.
    • This framework can be expanded to study muscle biomechanics in various populations, advancing personalized rehabilitation device design.