Teaching points about TFCC by Dr MGK Murthy & Mr Abdul Hamid
- Normally responsible for ulnar sided wrist pain.
- Thickness is inversely related to ulnar variance with negative ulnar variance patients having thicker TFCC.
- Normally is 1 to 2 mm thick at most locations with subtle increased upto 5 mm in the vicinity of eccentric concavity of the ulnar styloid.
- Being of type-I collagen is usually dark on all sequences like the knee ligaement.
- Coronal fat suppressed sequence is most appropriate for study of TFCC.
- The blood supply is usually well maintained at the periphery with relatively avascular centre which leads to central perforations not healing well.
- Dorsal and the palmar branches of the anterior introsseous artery along with dorsal and the palmar branches of ulnar artery supply TFCC.
- Has attachments to lunate, triquetral, hamate and base of the 5th metacarpal.
- Closely approximated to extensor carpi ulnaris tendon and associated injuries are common.
- MDCT Arthrography of the wrist is suggested to be superior in some studies, to MR Arthrography or Conventional Arthrography.
- Degeneration starts in 3rd decade with heterogenity being the rule by the 4th decade.
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