Coronoid process of ulna

Coronoid process of ulna is a part of the ulna, one of the two bones in the forearm. It is a triangular eminence projecting forward from the upper and front part of the ulna.

Anatomy

The coronoid process is located on the anterior portion of the ulna, the bone on the inner side of the forearm. It forms the lower part of the trochlear notch, which articulates with the humerus to form the elbow joint. The coronoid process provides attachment for various muscles and ligaments, including the brachialis muscle and the ulnar collateral ligament.

Function

The primary function of the coronoid process of the ulna is to serve as a point of attachment for muscles and ligaments that control the movement of the forearm. The brachialis muscle, which is the primary muscle responsible for elbow flexion, attaches to the coronoid process. The ulnar collateral ligament, which provides stability to the elbow joint, also attaches to the coronoid process.

Clinical significance

Injuries to the coronoid process can occur as a result of trauma, such as a fall on an outstretched hand. Fractures of the coronoid process are relatively rare but can lead to instability of the elbow joint and impaired arm function. Treatment typically involves surgical repair to restore the normal anatomy and function of the elbow.

See also

• Ulna
• Elbow joint
• Brachialis muscle
• Ulnar collateral ligament