The triangular fibrocartilage complex, or TFCC, is a cartilage structure located on the small finger side of the wrist that cushions and supports the small carpal bones in the wrist.
A TFCC tear is an injury to the tissue on the side of your wrist opposite your thumb. The tendons and ligaments that make up the TFCC allow the wrist to bend, straighten, twist, and move side-to-side.
Most TFCC injuries are caused by specific movements, like fall onto an outstretched hand, a direct blow to the side of the wrist or hand, swinging a bat or a racquet, or a violent twist of the wrist.
Symptoms may include pain on the little-finger side of your wrist or a clicking sound or feeling when you move your wrist.