Walking without weight means that the limbs are completely unloaded when walking. Walking without weight does not mean that the limbs do not carry things or carry weight when walking, but that the limbs are not even burdened with gravity when walking. Therefore, it is required to hold the crutches while walking, and to hold both crutches. The limb should be completely suspended when walking without weight, as long as the limb is stirring, stepping, walking is already weight-bearing, the limb is completely unstressed before it is called walking without weight-bearing, at this time there is no adverse effect on the injury of the limb. However, once weight-bearing walking, even part of the body’s gravity can cause the disease to be affected.