WHAT YOU NEED TO KNOW
The key to understanding this condition is understanding the ulnar nerve. The ulnar nerve is one of the arm’s major nerves and is part of the brachial plexus nerve system. It gets its name from its location near the ulna bone, a bone in the forearm on the side of the pinky finger. It starts in the neck and travels through the shoulder down the arm and into the wrist and fingers. It provides sensation to the forearm and 4th and 5th fingers. It also stimulates the flexor muscles of the hand allowing them to bend and move.
This compression should be differentiated from cervical radiculopathy involving the C8 nerve root, which may mimic ulnar nerve compression. It should also be remembered that cervical radiculopathy and ulnar nerve compression might coexist in the so-called Double Crush Syndrome. This occurs most commonly with ulnar nerve compression at the wrist or carpal tunnel syndrome.