Ligaments are tough, fibrous connective tissues which link bone to bone, made of collagen. In knee joint anatomy, they are the main stabilising structures of the knee (ACL, PCL, MCL and LCL) preventing excessive movements and instability.
The patella (kneecap) sits over the front of the knee joint. Four major ligaments connect the bones and stabilize the knee joint . In this image, the physician is pointing to the anterior cruciate ligament, or ACL, one of these important ligaments. Inside the knee joint is a smooth cover on the ends of the bone called articular cartilage.
The knee is one of the most commonly injured joints in the body. Here are some images to help you understand the knee joint and the common causes of knee pain. The knee joint is the junction of the thigh and the leg (part of the lower extremity ). The femur (thigh bone) contacts the tibia (shin bone) at the knee joint.