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The passive elastic moment at the hip

Y S Yoon, J M Mansour

    Journal of Biomechanics
    |January 1, 1982
    PubMed
    Summary

    Passive hip joint moments in males were measured. These moments, generated by hip flexion and extension, may play a role in energy storage and release during walking.

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    Area of Science:

    • Biomechanics
    • Human Physiology

    Background:

    • Understanding the passive elastic properties of the hip joint is crucial for analyzing human locomotion.
    • The contribution of passive joint moments to the overall mechanics of walking is not fully elucidated.

    Purpose of the Study:

    • To quantify the passive elastic moment at the hip in healthy adult males.
    • To investigate the influence of hip angle and knee position on hip joint moments.
    • To explore the potential role of passive hip moments in energy storage during walking.

    Main Methods:

    • In situ measurement of passive elastic hip moments in male subjects.
    • Hip moment measurements were conducted across a range of hip angles with fixed knee positions.
    • Experimental data were fitted using exponential functions to model flexion and extension contributions.

    Main Results:

    • Passive hip moments were successfully measured and modeled across various hip and knee configurations.
    • Distinct moment contributions from tissues deformed during hip flexion and extension were identified.
    • The data provide quantitative insights into the passive mechanical behavior of the hip joint.

    Conclusions:

    • Passive hip joint moments exhibit characteristics consistent with an energy storage and release mechanism.
    • These findings contribute to a deeper understanding of the biomechanics of human walking.
    • The study highlights the functional significance of passive tissues in joint mechanics during locomotion.

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