triangular fibrocartilage complex
Anatomical structure on ulnar side of wrist providing stability and load transmission between forearm and hand.
Full Definition
The triangular fibrocartilage complex (TFCC) is a critical anatomical structure located on the ulnar aspect of the wrist that consists of the triangular fibrocartilage disc, meniscus homologue, extensor carpi ulnaris sheath, dorsal and volar radioulnar ligaments, and ulnocarpal ligaments. This complex serves multiple functions including stabilizing the distal radioulnar joint, providing a cushion for ulnar-sided carpal bones, and transmitting load from the hand to the forearm. TFCC tears are common causes of ulnar-sided wrist pain and may be traumatic or degenerative in nature. Treatment ranges from conservative management to arthroscopic repair or reconstruction depending on the tear type and patient factors.
Usage
Usage note: Commonly abbreviated as TFCC in medical documentation; ensure proper anatomical terminology when describing ulnar-sided wrist structures.
In Context
- "MRI revealed a central perforation of the triangular fibrocartilage complex consistent with degenerative tearing." — Imaging report
- "Arthroscopic debridement of the triangular fibrocartilage complex was performed through the 3-4 portal." — Operative note