Images Humerus – Left/Right Identify the olecranon fossa that should belong to the posterior side of the humerus With the olecranon fossa pointing at you, notice the head of the humerus should point medially. Share this: Click to email a link to a friend (Opens in new window) Email Click to share on X (Opens in new window) X Click to share on Facebook (Opens in new window) Facebook Like Loading...