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Auditory biofeedback in spastic diplegia.

M Kassover, C Tauber, J Au

    Journal of Orthopaedic Research : Official Publication of the Orthopaedic Research Society
    |January 1, 1986
    PubMed
    Summary
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    Augmented auditory biofeedback improved gait in children with spastic diplegia by increasing ankle dorsiflexion at heel strike. This gait training approach successfully enhanced movement without inducing compensatory crouch gait.

    Area of Science:

    • Neurology
    • Biomechanics
    • Rehabilitation Medicine

    Background:

    • Spastic diplegia often results in impaired gait, characterized by reduced dorsiflexion at heel strike.
    • Compensatory mechanisms, such as crouch gait, can arise from attempts to correct gait abnormalities.

    Purpose of the Study:

    • To investigate the efficacy of augmented auditory biofeedback in improving gait patterns in children with spastic diplegia.
    • To specifically target increased dorsiflexion at heel strike without inducing detrimental compensatory knee or hip movements.

    Main Methods:

    • Four children with spastic diplegia (aged 5-8 years) participated in an 8-week program combining standard gait training with auditory biofeedback.
    • Auditory biofeedback involved a buzzing signal on heel contact to encourage dorsiflexion.

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  • Gait analysis, including velocity, stride length, and joint angles (hip, knee, ankle) at key gait phases, was performed using video analysis before, during, and after the intervention.

    • Main Results:

    • A statistically significant increase in ankle dorsiflexion at heel strike was observed with repeated biofeedback exposure (p < 0.01).
    • The biofeedback intervention did not induce a compensatory crouch gait.
    • No significant compensatory changes were noted in hip and knee joint angles (p > 0.25), indicating dissociated joint movement.

    Conclusions:

    • Augmented auditory biofeedback is an effective tool for improving ankle dorsiflexion in children with spastic diplegia.
    • This method facilitates targeted gait improvement without undesirable compensatory movements, promoting a more normalized gait pattern.