Partial Knee Replacement: Is It Right for You?

Also known as unicondylar knee arthroplasty, a partial knee replacement targets just one compartment of the knee joint—usually the medial (inner) side. In some cases, the replacement may also include the patellofemoral joint (underneath the kneecap). This procedure is ideal for patients with isolated arthritis in one area of the knee.

Benefits of a Partial Knee Replacement

  • Less invasive than a total knee replacement

  • Faster recovery time

  • Preservation of key ligaments like the ACL and PCL

  • Maintains more natural knee function and proprioception (your body’s ability to sense joint movement)

Patients often report that their knee still feels “normal” because the rest of the joint and the ligaments are left intact.

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  • Knee arthritis—especially osteoarthritis—develops when the cartilage that cushions your joint wears away. This can happen due to:

    • Genetics

    • Overuse or impact injuries

    • Excess body weight

    • Age-related degeneration

    Once non-surgical treatments like injections, therapy, and bracing no longer work, joint replacement becomes the best option for long-term relief.

    • If arthritis is found in more than one area, replacing one part won’t relieve all the pain

    • Other compartments may degenerate over time, possibly requiring a full knee replacement later

    • Not all patients are good candidates—weight, age, and activity level matter

    Dr. Pitts will work with you to evaluate imaging and symptoms to determine if a partial knee is your best option.