Wrist pain Ulnar wrist pain 2025-03-01T12:03:43Z The ulnar side of the wrist is the side of the wrist closest to the little finger (fifth finger, pinky). Conditions characterized by this term include triangular fibrocartilage complex, distal radioulnar joint (DRUJ) arthritis, and pisotriquetral (PT) osteoarthritis. An unpleasant sensation characterized by physical discomfort (such as pricking, throbbing, or aching) localized to the ulnar side of the wrist.