Medial Collateral Ligament (MCL) Injury
The Medial Collateral Ligament (MCL) is located on the medial (inner) aspect of the knee and connects the medial aspect of the tibia (shin bone) to the medial aspect of the femur (thigh bone). It is one of the ligaments responsible for knee stability, limiting excess twisting and outside-to-inside movements.
A MCL tear may be either chronic or acute resulting in a first, second or third degree tear.
● A first degree MCL tear occurs when there is a history of overuse activity, where chronic repetitive stress to the MCL has compounded, resulting in a first degree tear. This will present with mild-moderate pain located over the medial (inner) aspect of the knee.
● A second or third degree MCL tear occurs following an acute outside-to-inside traumatic injury to the knee. It presents with sharp pain and instant swelling over the medial (inner) aspect of the knee.