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Preoperative and postoperative radiographs of standard anterior-posterior and lateral view of the right wrist (A and B). Ulnar-triquetrum distance (UTD) was measured as the distance between the ulnar head and the proximal ridge of the triquetrum. Scaphoid-triquetrum distance (STD) was measured as the distance between the ulnar ridge of the scaphoid and the radial ridge of the triquetrum.
