Ulnar Channel

The ulnar canal is a medical canal that is located on the inner surface of the surface of the radius. The olecranon process of the olecranon lies in this groove and forms a dimple. The ulnar fossa is located in the upper quadrant.

The ulnar canal passes through the proximal radius and is the most important of the four canals on the radial side. It also runs along the entire upper third of the radial side. On the other hand, it runs deep at the elbow joint, near the lateral epicondyle, and divides to cross the carpal region to enter the first interosseous space.

Important features of the canal include that it also innervates the fibrous phase (adductor cord) of the brachial plexus, which runs within the canal. The hand lies partially on its side within the channel where it crosses the side of the forearm, just above the wrist. This makes it possible to rotate the hand in such a way as to oppose the hand and thumb.

Important functions of the canal are the innervation of the lateral and dorsal surfaces of the forearm and the anterior wall of the synovial sac for the elbow joint through the fibers responsible for