Generally speaking, a fractured lower limb can be partially weight-bearing with the support of crutches after six weeks, and can be fully weight-bearing with the abandonment of crutches after three months. Lower limb fractures usually need to be immobilized for six weeks, during the immobilization period, the lower limb should be elevated, which is conducive to the reduction of swelling and the return of blood flow. X-rays can be taken at six weeks, if the fracture has a continuous scab through the fracture end, it means that the fracture has the initial stability, at this time you can remove the external fixation, and gradually bear weight with the support of double crutches. At this time, it is not possible to abandon the crutches to bear weight completely, otherwise it will easily cause the load on the bone scab part to be too large, and it will be easy for the bone scab to break and the fracture to be dislocated. If the X-ray is taken again in three months, if it is clear that the fracture has reached clinical healing, you can abandon the crutches and walk with full weight bearing.