coronoid fossa of the humerus coronoid fossa of the humerus superior to the anterior portion of the trochlea is a small depression, the coronoid fossa, which receives the coronoid process of the ulna during flexion of the forearm. it is directly adjacent to the radial fossa of the humerus. coronoid fossa of the humerusleft humerus. anterior view. (coronoid fossa visible at bottom center, on left side.)detailsidentifierslatinfossa coronoidea humerita98a02.4.04.025ta21205fma23451anatomical terms of bone additional images human arm bones diagram elbow joint. deep dissection. anterior view. elbow joint. deep dissection. anterior view.