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  • Q&A with Australian Health Practitioners

    What is Unicompartmental Knee Replacement?

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  • Dr Daniel Cohen

    Orthopaedic Surgeon

    Dr. Daniel Cohen is an Australian trained Orthopaedic Surgeon with specialization in hip, knee and trauma surgery. Dr. Cohen graduated from the University of Sydney … View Profile

    Your knee joint is divided into three main compartments: the medial (inner) compartment, the lateral (outer) compartment, and the patellofemoral compartment (behind the kneecap). In some people with osteoarthritis, the damage is confined to just one of these compartments, most commonly the medial one.

    A unicompartmental knee replacement is a surgical procedure that resurfaces only the damaged compartment of the knee, leaving the healthy bone and cartilage in the rest of the joint untouched. This is the main difference between a partial and a total knee replacement, where all three compartments are replaced with artificial components. By targeting only the affected area, a partial knee replacement offers a more conservative approach to treating knee arthritis.

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