Medial Collateral Ligament (MCL) Injury: Symptoms & Signs

A medial collateral ligament (MCL) injury is damage to one of the four ligaments that help stabilize the knee joint. The MCL is located on the inside of the knee. Most MCL injuries are sprains or tears of the ligament.

Signs and symptoms of medial collateral ligament injury include pain on the inside of the knee, tenderness of the knee area, swelling, difficulty walking, knee stiffness, and locking of knee joint. Other associated symptoms can include instability of the knee joint.

Causes of medial collateral ligament (MCL) injury

A direct blow to the knee or a sudden deceleration or stop in movement usually causes these injuries. Contact sports like hockey, football, wrestling, and martial arts may cause an MCL injury.

Other medial collateral ligament injury symptoms

SLIDESHOW

Pictures of the 7 Riskiest Workout Moves, and How to Improve Them See Slideshow

Subscribe to MedicineNet's General Health Newsletter

By clicking Submit, I agree to the MedicineNet's Terms & Conditions & Privacy Policy and understand that I may opt out of MedicineNet's subscriptions at any time.

Medically Reviewed on 9/10/2019
References
Kasper, D.L., et al., eds. Harrison's Principles of Internal Medicine, 19th Ed. United States: McGraw-Hill Education, 2015.