The elbow joint is made up of three bones, the humerus, ulna, and radius. Several ligaments hold these bones together, and many tendons attach around the elbow. In addition, multiple nerves travel in close proximity to the elbow. The elbow is very important for arm function as it allows the hand to reach where it needs to. Several medical conditions can affect the elbow including overuse injuries, traumatic injuries, and nerve injuries. A thorough understanding of the anatomy and function of the elbow is important for treating these conditions successfully.