Internal fixation of fractures of the femoral shaft by two slotted plates is advocated for the treatment of fractures in Which internal fixation is indicated for malposition, nonunion, or malunion, or in which open reduction is the treatment of choice. The report includes a series of eighteen fractures which were treated successfully by this method. The absolute rigidity and contact established by two slotted plates make it possible to dispense with external immobilization, and the patient may bear weight without restriction as early as a week after the operation.