Humerus: Posterior view (English)

Due to its lateral positioning, the greater tubercle of the humerus can also be identified from this posterior view. Posteriorly, the shaft of the humerus is marked by the oblique radial groove, which allows for the passage of the radial nerve and deep brachial artery. In addition, the lateral border and posterior surface of the humerus can be appreciated from the posterior view. The distal end of the posterior humerus presents with a large fossa known as the olecranon fossa. In elbow extension, the tip of the ulnar olecranon process lodges into this fossa. The medial epicondyle of the humerus contains a shallow ridge on its posterior surface, known as the groove for ulnar nerve. As its name suggests, the groove transmits the ulnar nerve.