The elbow is the region between the upper and lower parts of the arm that surrounds the elbow joint. The elbow includes prominent landmarks such as the olecranon, the elbow pit, and the lateral and the medial epicondyles of the humerus. The elbow joint is a hinge joint between the upper arm and the forearm; more specifically between the humerus in the upper arm and the radius and ulna in the forearm which allows the forearm and hand to be moved towards and away from the body.