We had studied the results of operative treatments in twenty-seven interconylar fractures of the distal end of the humerus over a ten-year period retrospectively. From march 1989 to February 1996, 27 patients were included in this study. The fracture patterns were classified according to the system of Muller et al. and evaluated the results of the involved elbow by Jupiter's scale. The mean follow-up was 47.8 months. The operation method was open reduction by wide exposure and transolecranon approach and internal fixation between two condyles by cancellous screw or Hebert screw and two reconstruction plate rectangularly each other. Among 27, 17 were men and left elbow were 15. The mean average age was 50.2 (23-72)years old. The most common injury mechanism was direct trauma in 18 cases(62.9%). By Muller classification C3 type were 12 cases(44.4%), while C1 were 5 cases and C2 were 5 cases and C2 were 10 cases. At last follow-up the elow ROM was average flexion angle 107 degrees(18 to 125 degrees). Except intolerable pain and partial stiffness of elbow, the postoperative complications were 4 cases ; dsyesthia of ulnar nerve were 2, infection were 1, and heterotopic ossification was 1 case. The results of excellent and good were 20 cases(74.1%). In 7 cases of fair and poor results, C3 were 4 cases and C2 were 2 cases. It was concluded that the transolecranon approach and dual-plate fixation on humerus for fractures of the intercondyle of the humerus was satisfactory and necessary to effort of rigid fixation and a early rehabilitation after operation as possible.