Part 3 knee
Knee injuries can be the result of sports, falls or trauma. They typically involve the ligaments that hold two of the bones of the knee – the femur and tibia – together. Here are some of the most common types:
Injuries to the anterior cruciate ligament (ACL) are among the most common and dreaded sports injuries. Your ACL keeps your knee from moving too far out of position. Changing directions too quickly or hyperextending the knee can tear the ACL. Women are more prone to tearing the ACL. Surgery is often necessary to repair damage to an ACL.
A stretch or tear of the medial collateral ligament (MCL) is typically caused by a hit or blow to the outer knee. Pain is felt along the inner knee. Bracing and conservative treatment, such as rest and physical therapy, are usually sufficient to heal these injuries.
The meniscus is crescent-shaped cartilage between your thigh bone (femur) and lower leg bone (tibia). You have two of these cushions in each of your knees, inner (medial) and outer (lateral). The medial one is most often injured. These injuries often are caused by sudden twisting, resulting in swelling, pain and locking of the knee. Arthroscopic surgery may be necessary to remove the torn fragment when conservative treatment does not help.