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    |April 2, 2019
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    Summary

    This study introduces a novel pelvic controller to improve gait symmetry in individuals with hemiparetic gait. By guiding the pelvis, the device encourages balanced leg usage, potentially aiding rehabilitation for conditions like cerebral palsy and stroke.

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    Area of Science:

    • Biomedical Engineering
    • Rehabilitation Science
    • Biomechanics

    Background:

    • Hemiparetic gait, characterized by asymmetry, is common in cerebral palsy and stroke patients.
    • This gait pattern leads to reliance on the healthy leg, causing poor load distribution, reduced speed, and leg muscle weakness.

    Purpose of the Study:

    • To explore novel methods for improving gait symmetry by guiding pelvic movement.
    • To develop a controller mimicking a physical therapist's hands to promote balanced leg usage.

    Main Methods:

    • A custom pelvic controller was designed to guide pelvic motion during walking.
    • The controller's effectiveness was tested by inducing asymmetry in healthy subjects' gait.
    • Kinematic, kinetic, and muscle activity data were collected during the intervention.

    Main Results:

    • The device successfully induced asymmetric gait patterns in healthy subjects.
    • Subjects exhibited altered kinematics and kinetics, including asymmetric lateral ground reaction forces.
    • Increased muscle activity in the targeted leg demonstrated forced usage.

    Conclusions:

    • Pelvic guidance is a viable strategy for modulating gait symmetry.
    • This approach shows potential for developing rehabilitation tools to address asymmetric gait in clinical populations.