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Fig. 5A —49-year-old man with chronic ulnar-sided wrist pain without previous trauma and with arthroscopically confirmed normal ulnar attachment of triangular fibrocartilage in left wrist. In such cases contrast material in distal radioulnar joint is clearly separated from styloid process by ulnar attachment (small straight arrows) of triangular fibrocartilage. Scapholunate ligament tear (curved arrow) is evident. Proton density-weighted (TR/TE, 2,430/34) image shows normal triangular fibrocartilage. Minor increase (large straight arrow) in signal intensity within ulnar attachment of triangular fibrocartilage is normal.