2008三医大 WJ Chen 3. Humerus Humeral head Greater tubercle Surgical neck Sulcus fo dial n Deltoid tuberosity Lateral epicondyle TRochlea Medial epicondyle Sulcus for ulnar n2008 三医大WJ Chen 9 3. Humerus Humeral head Greater tubercle Deltoid tuberosity Sulcus for radial n. Lateral epicondyle Medial epicondyle Sulcus for ulnar n. Trochlea Surgical neck