What is a partial knee replacement?

A partial knee replacement, sometimes called unicompartmental knee arthroplasty, is surgery wherein only the part of the knee joint that is worn out is replaced, and not the entirety of the joint. This applies when there is arthritis or damage in only one compartment or section of the knee.

Who is a good candidate for partial knee replacement?

The ideal candidates for partial knee replacement usually have arthritis or damage affecting only one part of the knee, reasonably good overall functioning of the knee, and minimal deformity. There should be sufficient knee stability, with intact ligaments, since partial replacement is not quite indicated when several compartments are involved.

What are the advantages of partial knee replacement over total knee replacement?

It is less invasive compared to the total knee replacement: smaller incisions, less bone removed, and generally quicker recovery. Patients often describe that the knee feels more natural after surgery and, because the healthy parts of the knee are preserved, the procedure may well involve less pain and a shorter rehabilitation period.

What is the recovery period for partial knee replacement?

Recovery after partial knee replacement is generally shorter compared to total knee replacement. Most patients can resume light activities in 2-4 weeks and more strenuous activities after a few months. Patients often have less stiffness and may achieve motion more quickly, although physical therapy remains very important.

How long does a partial knee replacement last, and will I need a full knee replacement later?

Partial knee replacements are durable and can last for 10 to 15 years or more. However, some patients with arthritis progression in other parts of the knee may eventually need to undergo full knee replacement. Regular follow-up with your orthopedic surgeon will help assess the condition of the knee and any additional signs of wear and/or arthritis.