Anterior Cruciate Ligament (ACL) Injuries
About Anterior Cruciate Ligament (ACL) Injuries
One of the most common knee injuries is a sprain or tear of the anterior cruciate ligament (ACL). The ACL, which runs diagonally in the middle of the knee, prevents the tibia from sliding out in front of the femur and provides rotational stability to the knee. The ACL can tear if the knee is pulled or twisted in an unnatural way. The feeling is often described as unstable, like the knee is buckling.
Injuries to the ACL are especially common in sports where side-to-side or pivoting movement of the knee is required. For active individuals and athletes, surgery is usually needed.