From:  Progression of arthritis after four-corner fusion in patients with calcium pyrophosphate deposition disease: a case series of eleven patients

Range of motion for affected wrist

IntervalFlexion, mean (SD)Extension, mean (SD)
Preoperative43° (12°)35° (8°)
Postoperative26° (9°)26° (10°)
Final follow-up41° (7°)40° (12°)