What causes a medial collateral ligament (MCL) injury?

John E. Zvijac, MD
Orthopedic Surgery
Injury to the medial collateral ligament (MCL) often occurs after an impact to the outside of the knee when the knee is slightly bent. The MCL becomes stretched and if the force is great enough, some or even all of the fibers will tear. The MCL is often injured at the same time as an anterior cruciate ligament (ACL). Participants in sports like soccer, football, lacrosse and basketball are most likely to injure their MCL.

Continue Learning about Muscle & Connective Tissue Injuries

Muscle & Connective Tissue Injuries

Muscle & Connective Tissue Injuries

Muscle and connective tissue injuries include sprains and strains, which are the most common injuries for people engaged in physical sports. A sprain is an injury of a ligament, which connects our bones to each other. A strain is ...

an injury that can occur to a muscle or a tendon, which connects our bones to our muscles. If you have a muscle or connective tissue injury, you will likely experience pain, swelling, and limited movement of that body part. Sometimes these injuries are evident as soon as they occur, while others take time to develop. Usually rest helps to heal the area, and ice can reduce swelling. If these remedies dont help you, physical therapy or surgery may be necessary for a full recovery.
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Important: This content reflects information from various individuals and organizations and may offer alternative or opposing points of view. It should not be used for medical advice, diagnosis or treatment. As always, you should consult with your healthcare provider about your specific health needs.