When The Arm Is Extended At The Elbow Which Structure Accepts The Olecranon?
When The Arm Is Extended At The Elbow Which Structure Accepts The Olecranon? Olecranon fossa (Fossa olecrani) is a prominent, triagular-shape depression on the distal posterior surface, superior to the trochlea. This area accepts the olecranon process of the ulna when the forearm is extended. Where does the olecranon process of the ulna go when