ACL stands for anterior cruciate ligament while PCL stands for posterior cruciate ligament. These two ligaments form basis of the stability in the knee.

Explanation and Causes: The ankle joint is made up of 3 bones—the tibia is the inside larger bone of the lower leg, the fibula is the outside smaller bone of the lower leg, and the talus is the top bone of the foot. The synovium lies over the top of the joint and is filled [...]