The triangular fibrocartilagecomplex (TFCC) is a group of important structures on the ulnar side of the wrist, including the articular disc, meniscal homologue, palmar and dorsal distal ulnar radial ligaments, deep ulnar extensor tendon sheath, ulnar capsule, ulnar ligament, and ulnar deltoid ligament. The palmar and dorsal distal ulnar radial ligaments include superficial and deep fibers that converge at the radial attachment.The complex anatomy and multiple functions of the TFCC make it susceptible to trauma and degeneration. It can occur during a fall with the hand on the ground, when the wrist is subjected to axial stress in the extended, anteriorly rotated position. Other mechanisms of injury include injury from greater rotational or distraction violence. Acute TFCC injuries are defined as injuries that are less than three months from repair, and in many cases have a chance of restoring more than 80% of grip strength and joint mobility when compared to the healthy side, with a better prognosis than subacute (three months to one year) and chronic injuries (more than one year). Early diagnosis and proper treatment are particularly important.