The best method of treatment for displaced comminuted fractures of the radial head is still controversial. Early excision of the fractured radial head has been favored by a number of authors. but problems such as chronic pain in the elbow, forearm or wrist, restricted movement of the elbow, late subluxation of the distal radio-ulnar joint can ensue. So prosthetic replacement of the radial head had been advocated either for acute treatment of a fracture or for delayed treatment, when conservative treatment has failed. We analyzed 10 patients with comminuted radial head fracture treated by silastic prosthesls replacement shortly after injury from Jan. 1988 to Dec. 1992.