The triangular fibrocartilage complex contains the ulnar collateral ligament, sacciform recess, a meniscus homolg, and an articular disc. These structures reinforce the ulnar side of the wrist.

The articular disc arises from the ulnar notch of the radius blending with a tissue wedge (meniscus homolog) that inserts on the ulnar styloid. The disc, wedge, and connective tissue complex also attach to the triquetrum, and the connective tissue reaches as distal as the hamate and base of the fifth metacarpal.

The sacciform recess is an extension of the capsule.

The ulnar collateral ligament attaches from the ulnar styloid process to the triquetrum, pisiform, and articular disc. This ligament limits radial deviation

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Articular Disc | Sacciform Recess | Ulnar Collateral Ligament | Wrist Volar Superficial | Wrist Dorsal | Finger Ligaments | Help | Hand Kinesiology

Lorie Richards and Janice Loudon, University of Kansas Medical Center, School of Allied Health,
Occupational and Physical Therapy Education, October 1997