Between March 1988 and March 1995, 10 patients with displaced Mason type II, type III, or type 1V fracture of the radial head or neck were treated by open reduction and internal fixation using bioresorbable pins. The average age of the patients was 38 years (22 to 70), and average follow-up period was 14 months (12 to 18). There were 4 type II, 4 type III, and 2 type IV fractures. According to the functional rating system of Broberg and Morrey, the clinical results were reviewed at an average follow-up of 14 months. The functional results were 4 excellent, 5 good, and 1 fair. Fixation of displaced radial head or neck fracture using bioresorbable pins, was considered as one of the good methods.