Coronoid fossa

Definition

The coronoid fossa is a shallow depression located on the anterior surface of the distal end of the humerus, where it accommodates the coronoid process of the ulna during forearm flexion. It plays a crucial role in elbow joint movement by allowing the arm to bend smoothly.

Related terms

Humerus: The long bone in the upper arm that articulates with the shoulder at its proximal end and with the elbow at its distal end.

Ulna: One of the two long bones in the forearm, located on the side opposite to the thumb, playing a key role in arm movement and stability.

Elbow Joint: A hinge joint composed of three bones (the humerus, radius, and ulna) that connects the upper arm to the forearm and allows for arm extension and flexion