Injury to the ligaments on the inside (medial collateral) and outside (lateral collateral) of the knee can occur from trauma and sports/recreational activity. Pain in the region of the ligament, knee swelling, and instability (feeling the knee is loose) can be signs of ligament injury.
Physical examination from the doctor, xray, and possible MRI are needed to confirm the diagnosis. Depending on how much of the ligament is torn will determine the treatment recommended. Bracing, activity modifications, injections such as PRP, and surgical reconstruction my be indicated. Surgery can include repairing the torn ligament, or reconstructing in with a tendon graft to create a new ligament. Other injuries, such as meniscal tears and ACL/PCL injuries are common to occur at the same time as injury to the MCL or LCL.