Whether the fracture of the leg is treated by surgery or external fixation in plaster, the rehabilitation includes several aspects: 1. Functional exercises for fractured joints are essential, such as functional exercises for knee or ankle joints, and passive exercises for joints can be performed within 1-2 days after surgery, which is helpful for joint rehabilitation. 3. If external fixation is adopted, active and passive exercises for joint functions should be performed after removal of the cast to prevent joint adhesions and stiffness.