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Related Experiment Videos

Knee stability in orthotic knee braces.

A A Hofmann, R W Wyatt, M H Bourne

    The American Journal of Sports Medicine
    |September 1, 1984
    PubMed
    Summary

    Six knee braces were tested for stabilizing knee ligament injuries in cadavers. The 3D 3-Way Brace offered the best stability against anterior, valgus, and rotational forces.

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    Area of Science:

    • Orthopedics
    • Biomechanics
    • Biomedical Engineering

    Background:

    • Ligamentous knee injuries, such as anterior cruciate and medial collateral ligament tears, are common.
    • Orthotic knee braces are frequently used to manage these injuries and restore knee stability.
    • Evaluating the efficacy of commercially available braces is crucial for clinical decision-making.

    Purpose of the Study:

    • To compare the stabilizing ability of six different commercial orthotic knee braces.
    • To assess brace performance under simulated ligamentous injury conditions.

    Main Methods:

    • Fresh cadaver knee specimens were used.
    • Anterior, valgus, and rotational forces were applied to intact knees, knees with transected anterior cruciate and medial collateral ligaments, and knees with braces.
    • Bony displacement was quantified using an external fixator and half pins.

    Main Results:

    • Significant differences in knee stability were observed among the six tested braces.
    • The 3D 3-Way Brace demonstrated superior performance in stabilizing the knee.
    • Brace design was identified as a likely factor influencing performance variations.

    Conclusions:

    • Orthotic knee brace design significantly impacts their ability to stabilize ligamentous knee injuries.
    • The 3D 3-Way Brace is a potentially effective option for enhancing knee stability following ligamentous injury.
    • Further research into brace design and biomechanical function is warranted.

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