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[Basic and clinical study on functional electrical stimulation (FES) for the paralyzed upper extremity].

R Yagi

    Nihon Seikeigeka Gakkai Zasshi
    |April 1, 1985
    PubMed
    Summary

    Functional electrical stimulation (FES) restores grasp and pinch in paralyzed hands. This method offers a path toward greater independence in daily activities for individuals with upper motor neuron lesions.

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    Area of Science:

    • Rehabilitation Medicine
    • Neuroscience
    • Biomedical Engineering

    Context:

    • Upper motor neuron lesions often result in paralysis of the upper extremity, significantly impacting hand function.
    • Restoring hand function is crucial for activities of daily living (ADL) and improving quality of life.
    • Existing reconstructive methods may have limitations, necessitating exploration of novel approaches like FES.

    Purpose:

    • To investigate the efficacy of Functional Electrical Stimulation (FES) for reconstructing grasp and lateral pinch movements in paralyzed hands.
    • To analyze electromyographic data from normal hand movements to inform FES application.
    • To develop and clinically apply an FES system for tetraplegic patients to aid in ADL.

    Summary:

    • Electromyographic analysis of grasp and lateral pinch in normal hands provided a basis for applying FES.

    Related Experiment Videos

  • FES was applied to the hands of individuals with tetraplegia and hemiplegia using percutaneous electrodes, resulting in three distinct grip patterns: parallel extension grip, grasp, and lateral pinch.
  • A custom FES system enabled a tetraplegic patient to achieve hand opening and various grip patterns, facilitating ADL such as eating and writing.

    • Impact:

    • Demonstrates the potential of FES as a reconstructive method for upper extremity paralysis.
    • Highlights the ability of FES to restore functional hand movements, including grasp and pinch.
    • Shows that FES can significantly enhance independence in daily activities for individuals with paralysis.