Polio legs may require crutches. When polio symptoms are more severe, the patient’s limbs atrophy significantly, unable to walk normally, need to be suspended crutches. Polio is mainly caused by the poliovirus on one side of the patient’s limb atrophy, shortening of the phenomenon, this symptom can be mild or severe. When the symptoms are mild, the patient’s side of the limb shortening the magnitude is relatively small, can walk independently, in this case, do not need to hang crutches. When the symptoms are more severe, the patient’s side of the limbs appear obvious atrophy, and can not walk independently, in this case, the need to hanging crutches. Depending on the severity of the polio symptoms, polio legs may require suspension crutches.