Knee Injury
A knee injury might affect any of the fluid-filled sacs (bursae), ligaments, or tendons that surround the knee joint as well as the cartilage, ligaments, and bones that make the joint itself. An ACL injury result from a tear in the anterior cruciate ligament (ACL) that connects the thigh bone to the shin bone. An ACL injury is more prevalent in people who play sports like soccer or basketball that requires abrupt changes in direction.