Your triangulo-fibro cartilage complex (TFCC) is a structure that sits as a sling to hold the outside of your wrist together. It consists of the fibrocartilage articular disc, the meniscal homologue, the palmar and dorsal radioulnar ligaments, the ulnar capsule, the Extensor Carpi Ulnaris (ECU) subsheath, the distal radioulnar joint (DRUJ) and the ulnocarpal joint, providing a firm support for your wrist grip and to rotate objects. The TFCC is injured primarily in twisting positions and often associated with a high mechanical force. The middle structure has minimal blood supply so healing can take a long time. If the outside of the TFCC is damaged, then the injury can heal conservatively. If it is a severe tear, then surgery may be required.
