The cubital tunnel is located in the elbow and is a 4-millimeter passageway between the bones and tissue.
It encases the ulnar nerve, one of the nerves that supplies feeling and movement to the arm and hand. The ulnar nerve runs from the neck to the shoulder, down the back of the arm, around the inside of the elbow and ends at the hand in the fourth and fifth fingers. Due to the narrow opening of the cubital tunnel, it can be easily injured or compressed through repetitive activities or trauma.
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