Medial collateral ligament (MCL) injury of the knee

Alternative Names

First Aid

The health care provider will examine your knee, including the area of the medial collateral ligament. An MCL test will be done to detect looseness of the ligament. This test involves bending the knee to 25 degrees and putting pressure on the outside surface of the knee.

Other tests may include:

• Knee MRI
• Knee joint x-rays

Treatment includes applying ice to the area, raising the knee above heart level, and non-steroidal anti-inflammatory drugs (NSAIDS). You should limit physical activity until the pain and swelling go away.

After an initial period of keeping the knee still (usually with a knee brace), knee strengthening and stretching exercises should be done. Physical therapy may be helpful to help regain knee and leg strength.

Surgery is not usually used for isolated tears of the MCL.

When to Contact a Medical Professional

Call your health care provider if symptoms of MCL injury occur.

Call your health care provider if you are being treated for MCL injury and you notice increased instability in your knee, if pain or swelling return after they initially subsided, or if your injury does not resolve with time.

Also call if you reinjure your knee.