MCL tear
The medial collateral ligament (MCL) connects the upper leg bone (femur) to the larger bone of the lower leg (tibia). It is located on the inner side of the knee. The MCL is typically injured when the knee joint is pushed sideways when making a wrong move or by receiving a direct blow to the knee. A torn MCL results in pain, swelling, and instability of the joint. The condition is often treated with ice, bracing, and physical therapy. If other structures in the knee are injured or if the torn MCL is severe, surgery may be recommended