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The effect of patellectomy on knee function.

F S Sutton, C H Thompson, J Lipke

    The Journal of Bone and Joint Surgery. American Volume
    |June 11, 1976
    PubMed
    Summary
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    Complete patellectomy (surgical removal of the kneecap) leads to more significant quadriceps weakness and instability than partial patellectomy. Both procedures equally reduce knee range of motion.

    Area of Science:

    • Orthopedic Surgery
    • Biomechanics
    • Rehabilitation Medicine

    Background:

    • Patellectomy is a surgical procedure involving the removal of the patella.
    • Understanding the functional outcomes of partial versus complete patellectomy is crucial for patient recovery and rehabilitation protocols.

    Purpose of the Study:

    • To compare the functional outcomes of partial and complete patellectomy.
    • To evaluate subjective complaints, physical findings, quadriceps strength, and knee motion post-surgery.

    Main Methods:

    • Retrospective evaluation of 33 patients following patellectomy.
    • Assessment of subjective symptoms, objective physical examination, quadriceps strength testing, and knee range of motion during daily activities.

    Main Results:

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    • Both partial and complete patellectomy resulted in comparable loss of active and passive knee range of motion.
    • Complete patellectomy led to increased ligament instability, quadriceps atrophy, and reduced quadriceps strength compared to partial patellectomy.
    • Complete patellectomy significantly decreased knee flexion during the stance phase of walking and stair negotiation.

    Conclusions:

    • Complete patellectomy imposes a greater deficit in quadriceps strength and knee stability than partial patellectomy.
    • Functional limitations in gait, particularly during stair negotiation, are more pronounced after complete patellectomy.