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Gait analysis in amputees.

H B Skinner, D J Effeney

    American Journal of Physical Medicine
    |April 1, 1985
    PubMed
    Summary
    This summary is machine-generated.

    Amputee gait, including above-knee (AK) and below-knee (BK) amputations, shows significantly reduced walking velocity and symmetry compared to normal. This asymmetry increases energy expenditure, highlighting the need for further research to improve amputee mobility.

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    Area of Science:

    • Biomechanics
    • Kinesiology
    • Prosthetics and Orthotics

    Background:

    • Lower extremity amputations significantly alter gait patterns.
    • Understanding these alterations is crucial for improving prosthetic design and rehabilitation strategies.

    Purpose of the Study:

    • To compare gait parameters between above-knee (AK) and below-knee (BK) amputees and normal individuals.
    • To analyze the impact of gait asymmetry on energy expenditure in amputees.

    Main Methods:

    • Kinematic and temporal-spatial gait analysis.
    • Comparison of time-distance parameters (velocity, cadence, stride length, gait cycle).
    • Measurement of single limb support times and motion analysis of the entire body.

    Main Results:

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    • Amputee gait velocity is significantly lower than normal, with AK amputees exhibiting greater deficits (2 SD below normal) than BK amputees (1 SD below normal).
    • Gait symmetry is markedly reduced in lower extremity amputees compared to normal subjects.
    • Increased asymmetry leads to greater center of mass excursion and elevated energy cost of ambulation.

    Conclusions:

    • Amputee gait, particularly AK, is characterized by reduced velocity and symmetry, increasing energy demands.
    • Current gait capabilities for amputees, especially dysvascular AK amputees, are severely limited.
    • Further research is essential to enhance amputee walking capabilities to approach normal levels.