Unicondylar Knee Replacement

What Is It?

Unicondylar knee replacement, also known as partial knee replacement, is a surgical procedure where only the damaged part of the knee joint is replaced with an artificial implant. Unlike a total knee replacement, this surgery preserves the healthy bone, cartilage, and ligaments, allowing for a more natural knee movement.

Who Is It For?

This procedure is typically recommended for patients who:

Have arthritis limited to one compartment of the knee (usually the inner side).
Experience persistent pain and stiffness despite medications or physiotherapy.
Have good overall knee stability and intact ligaments.
Are not yet candidates for a full knee replacement.

The Procedure

Evaluation – X-rays or scans confirm that only one part of the knee is affected.
Surgery – The surgeon makes a small incision, removes the damaged cartilage and bone, and replaces it with a metal and plastic implant.
Preservation – Healthy parts of the knee remain untouched, which helps maintain natural movement.
Recovery – Patients often experience less pain, quicker rehabilitation, and shorter hospital stays compared to total knee replacement.

Benefits

Smaller incision and less invasive surgery.
Faster recovery and shorter hospital stay.
More natural knee function since healthy tissue is preserved.
Reduced blood loss and lower risk of complications.

Risks & Considerations

Arthritis may progress to other parts of the knee, requiring a future total knee replacement.
As with any surgery, risks include infection, blood clots, or implant loosening.
Not suitable for patients with widespread arthritis or severe knee deformity.

Key Message for Patients

Unicondylar knee replacement is a safe and effective option for patients with arthritis confined to one part of the knee. It offers quicker recovery, less pain, and more natural movement compared to total knee replacement. However, it is not suitable for everyone, and careful evaluation by your orthopedic surgeon is essential.

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