The patient, 19, presents instability in the left wrist and pain at its ulnar edge. The symptoms, which limit its functionality, appear after a second injury (he had suffered a previous wrist fracture in childhood) and have their origin in a pseudoarthrosis of the ulnar styloid and the rupture of the insertion of the triangular fibrocartilage (TFC) in the ulnar fovea (bony cavity next to the styloid).
The triangular fibrocartilage is in the ulnar side of the wrist and is a major cause of pain in the area. This diagnostic label can include up to 60 different pathologies in just one square centimeter of body surface (1).
