Medial Collateral Ligament (MCL) Injury: Symptoms & Signs

  • Medical Author:
    Melissa Conrad Stöppler, MD

    Melissa Conrad Stöppler, MD, is a U.S. board-certified Anatomic Pathologist with subspecialty training in the fields of Experimental and Molecular Pathology. Dr. Stöppler's educational background includes a BA with Highest Distinction from the University of Virginia and an MD from the University of North Carolina. She completed residency training in Anatomic Pathology at Georgetown University followed by subspecialty fellowship training in molecular diagnostics and experimental pathology.

Medically Reviewed on 9/10/2019

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 Causes of Medial Collateral Ligament Injury Symptoms

REFERENCE:

Kasper, D.L., et al., eds. Harrison's Principles of Internal Medicine, 19th Ed. United States: McGraw-Hill Education, 2015.

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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.