Definition of "ulnar" []

• Of or pertaining to the ulna, or the elbow; as, the ulnar nerve. (adjective)

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• "Loops which flow in the direction of the ulna bone (toward the little finger) are called ulnar loops and those which flow in the direction of the radius bone are called radial loops."
• "The articular surface for the ulna is called the ulnar notch (sigmoid cavity) of the radius; it is narrow, concave, smooth, and articulates with the head of the ulna."
• "The procedure -- named for the Hall of Fame pitcher who was the first to have the operation in 1974 -- involves using a tendon from elsewhere in the body to replace a damaged elbow ligament called the ulnar collateral ligament (UCL)."