As the elbow reaches full extension, the olecranon process of the ulna is received by the olecranon fossa of the humerus, and this provides increased joint stability.

Question

Quizplus · Accepted Answer

When the elbow is fully extended, the olecranon process of the ulna fits into the olecranon fossa of the humerus, which increases the stability of the elbow joint by preventing further hyperextension.

As the Elbow Reaches Full Extension, the Olecranon Process of the Ulna