Palmer classification of TFCC abnormalities

Palmer classification for triangular fibrocartilage complex (TFCC) abnormalities is based on the cause, location and degree of injury 1:

Class 1 - traumatic injury
  • a: central perforation
  • b: ulnar avulsion with or without distal ulnar fracture
    • may involve the proximal or distal lamina (foveal and styloid attachment, respectively), or both
  • c: distal avulsion
  • d: radial avulsion with or without sigmoid notch fracture
Class 2 - degenerative injury (ulnocarpal abutment syndrome)
  • a: TFCC wear
  • b: TFCC wear with lunate and/or ulnar chondromalacia
  • c: TFCC perforation with lunate and/or ulnar chondromalacia
  • d: TFCC perforation with lunate and/or ulnar chondromalacia and lunotriquetral ligament perforation
  • e: TFCC perforation with lunate and/or ulnar chondromalacia, lunotriquetral ligament perforation, and ulnocarpal arthritis

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Article information

rID: 5191
Tags: wrist, refs
Synonyms or Alternate Spellings:
  • Palmer classification of triangular fibrocartilage complex abnormalities
  • Palmer classification of TFCC injuries

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