According to Scivoletto, of the patients with American Spinal Injury Association (ASIA) impairment scale A, with thoracic and lumbar lesion only 6.4% achieve functional walking. In patients with ASIA B, have an overall rate of ambulation of 23.5%, ASIA C have 51.4% and ASIA D patients have a prognosis for walking recovery between 80-100% (88.9%).