The UCL attaches proximally at the humerus to which specific structure?

The ulnar collateral ligament (UCL) is a crucial ligament in the elbow that plays a significant role in stabilizing the joint, particularly during activities that involve throwing. It attaches proximally at the humerus to the medial epicondyle. This attachment site is essential because the medial epicondyle serves as a bony landmark for the muscles and ligaments on the inner side of the elbow.

Understanding the anatomy of the elbow is vital for grasping how the UCL functions. The medial epicondyle is positioned on the inner aspect of the humerus, making it an ideal location for the UCL to provide stability against the forces exerted during arm motions.

In contrast, the lateral epicondyle, olecranon process, and coronoid process are not the correct attachment sites for the UCL. The lateral epicondyle is on the outer side of the elbow and is associated with the extensor muscles, whereas the olecranon and coronoid processes are parts of the ulna and do not serve as attachment points for the UCL. Knowing the specifics of these anatomical landmarks is crucial for anyone studying sports medicine or orthopedic-related practices, particularly concerning elbow injuries and treatment options.