The Triangular Fibrocartilage Complex (TFCC) is a group of ligaments and cartilage on the ulnar side of the hand. The TFCC ligaments attach the cartilage to the small wrist bones which also suspend the ends of the two forearm bones, the ulna and the radius.
TFCC problems can be caused by a fall on an outstretched hand (a "FOOSH") or simply degeneration from overuse or the aging process. Athletes, particularly gymnasts who bare weight on their hands, are especially prone to TFCC problems
