The intramedullary nailing of long bone fractures, particularly, fractures of the shaft of femur in adults, is a satisfactory technique as it fulfills the objectives of fracture management. Malunion is, however, a significant problem with intramedullary nailing of the Kuntscher type, the major problem is malrotation which occurs either at the time of the operation or as a result of rotatory instability. Another from of malunion that occurs is shortening of the fracture site especially in the presence of comminution. Klemm & Schellmann(1972), and King(1980) has shown, however, by using interlocking cross-pinning technique that stable fixation can be achieved with no significant shortening and this development has extended the indications of intramedullary nailing. Four cases of femoral shaft fractures were treated by interlocking intramedullary nailing and good results were obtained at Ewha Womans University Hospital, Department of Orthopedic Surgery, Since February, 1985.

From march 1980 to August 1983, fourteen patients with fractures of the clavicle were treated by open reduction and internal fixation with threaded steinman pin at department of orthopadic surgery of Ehwa university hospital. The results were as followings; 1) Average duration of union of the fractures was 8.9 weeks. 2) Non-union was occured in one case, which was united by autogenous bone graft. 3) By open reduction and internal fixation, abnormal external appearance, such as bony protrusion and shortening was not noted and with early motion of the shoulder joint, disturbance of the joint function was minimized. 4) Open reduction and internal fixation in fractures of the clavicle was recommended in severe comminuted fracture, clinical non-union and heavy worker.