What to Know About Partial Knee Replacement

Overview

Partial knee replacement, also known as unicompartmental knee arthroplasty (UKA), is a surgical procedure to replace the damaged part of the knee joint. It is usually performed when only one compartment of the knee is affected by osteoarthritis. Unlike total knee replacement, which replaces the entire knee joint, partial knee replacement only replaces the damaged part. This can lead to a quicker recovery and less pain.

What to Expect

- Before Surgery

Your surgeon will discuss the risks and benefits of the surgery and will order imaging tests to determine the extent of the damage to your knee. You may also be asked to see a physician to ensure that you are healthy enough for surgery.

- During Surgery

Surgery typically lasts between 1-2 hours and is performed under general anesthesia. During the procedure, the surgeon will remove the damaged cartilage and bone and replace it with artificial components. The incision will then be closed with sutures.

- After Surgery

After surgery, you will be taken to a recovery room where you will be monitored for any complications. You will likely need to stay in the hospital for a few days. During this time, you will begin physical therapy to help you regain range of motion in your knee.

Recovery

- The recovery time after partial knee replacement is typically shorter than the recovery time after total knee replacement. Most patients are able to walk without assistance within 6 weeks of surgery. However, it may take several months for your knee to fully heal and regain full range of motion.

- You will likely need to wear a brace for a period of time after surgery. You should also avoid high-impact activities until your knee has fully healed.

Risks and Complications

As with any surgery, there are risks and complications associated with partial knee replacement. These include:

- Infection

- Bleeding

- Blood clots

- Nerve damage

- Stiffness

- Pain

- Failure of the implant

- Need for additional surgeries

Success Rate

The success rate of partial knee replacement is high. Most patients experience significant pain relief and improvement in function after surgery. However, it is important to note that partial knee replacement is not a cure for osteoarthritis and the symptoms may eventually return.