Wafer distal ulnar resection. A, Distally, 2 to 4 mm of ulna is resected to decompress triangular fibrocartilage complex (TFCC), lunate, and triquetrum; styloid process and ligament insertions are preserved. B, In left wrist, probe passes through TFCC tear, which can be seen easily after wafer resection. C, Sagittal view of ulnocarpal junction, showing triquetrum on right and distal ulna on left. Triangular fibrocartilage, which appears as vertical structure between these two bones, is sutured to dorsal capsule with row of sutures to suspend TFCC under normal tension. SEE TECHNIQUE 69.35.