A. Anterior cruciate ligament.
B. Posterior cruciate Iigament.
C. Medial collateral ligament.
D. Lateral collateral ligament.
Mechanism as shown in the photograph below is typical of medial collateral ligament.
A medial ligament sprain or MCL injury is a tear of the ligament on the inside of the knee, usually a result of twisting or direct impact.
Medial ligament injuries are common in contact sports such as football and rugby, as well as martial arts. They can also occur in daily life through falls and twists of the knee joint.