Triangular fibrocartilage
- Triangular fibrocartilage
Infobox Anatomy
Name = PAGENAME
Latin = discus articularis articulationis radioulnaris distalis
GraySubject = 85
GrayPage = 325
Caption = Vertical section through the articulations at the wrist, showing the synovial cavities. (Articular disc labeled at center left.)
Caption2 =
System =
MeshName = triangular+fibrocartilage
MeshNumber = A02.835.583.405.930.800
DorlandsPre = d_22
DorlandsSuf = 12300668
The Triangular fibrocartilage complex(TFCC) (or articular disk of the distal radioulnar articulation or radioulnar disk) is triangular in shape, and is placed transversely beneath the head of the ulna, binding the lower ends of the ulna and radius firmly together.
Its periphery is thicker than its center, which is occasionally perforated.
It is attached by its apex to a depression between the styloid process and the head of the ulna; and by its base, which is thin, to the prominent edge of the radius, which separates the ulnar notch from the carpal articular surface.
Its margins are united to the ligaments of the wrist-joint.
Its upper surface, smooth and concave, articulates with the head of the ulna, forming an arthrodial joint; its under surface, also concave and smooth, forms part of the wrist-joint and articulates with the triquetral bone and medial part of the lunate.
Both surfaces are clothed by synovial membrane; the upper, by that of the distal radioulnar articulation, the under, by that of the wrist.
External links
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* - "Triangular Fibrocartilage Complex Injuries"
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