1. An end-result study of 100 cases of fresh fractures of the shafts of both bones of the forearm in adults has revealed a high incidence of unsatisfactory results.

2. Improper rotational alignment is an important causative factor in a high percentage of pooor results.

3. Transverse fractures in the middle and lower thirds of both bones of the forearm may, in some instances, be satisfactorily reduced by closed manipulation, if reduction is performed wit h correct rotational alignment.

4. Fractures of the upper third of the forearm, and oblique or comminuted fractures at any level in the forearm, are best treated by open reduction and rigid internal fixation of both bones.

5. Simple transverse and oblique fractures of the shafts may be plated; but comminuted fractures of the shafts are most satisfactorily treated by primary bone-grafting.

6. Intramedullary fixation is a very satisfactory method of maintaining the reduction and alignment of complicated fractures of the shafts of both bones of the forearm, partictilarly where there is major soft-tissue injury and where other methods of internal fixation, such as plating and primary grafting, are contra-indicated.

7. External plaster fixation must be maintained until union is clinically and roentgenographically complete, regardless of the type of internal fixation employed.