Triangular fibrocartilage complex (TFCC) injuries affect the ulnar side of the wrist—the side closest to the little finger. Mild cases may feel like a simple wrist sprain, but due to the complexity of the wrist’s soft tissues, these injuries can significantly impact stability and function.
The TFCC plays a crucial role in supporting and stabilizing the wrist joint, allowing smooth and controlled movement. When this structure is damaged through trauma or gradual degeneration, it can lead to persistent pain, weakness, and limited mobility.
This guide explains the structures involved, how these injuries occur, how they are diagnosed, and the treatment options available.



















