Elbow

The elbow is comprised of three bones—the humerus, radius, and ulna—which form three joints allowing for movement and range of motion. The three ligaments supporting the elbow are the medial collateral ligament, the lateral collateral ligament, and the annular ligament; and muscles like the biceps, triceps, brachialis, and pronator teres, which protect the joints in the elbow and allow for flexion and extension. The elbow plays important roles in hand and shoulder function as well.