The Parastep I™ System is the first functional neuromuscular electrical stimulation device available for standing and walking short-distances with a walker, by appropriately selected and properly trained spinal cord injured individuals. A variety of FNS-assisted exercise devices are sold commercially, but none of these enable standing and ambulation. There are no other commercially available FNS systems for ambulation. The Parastep I™ System is the only such device to have received U.S. Food & Drug Administration approval for marketing in the U.S.A. (FDA #P900038) following multi-center clinical trials geared towards demonstrating the device's safety, efficacy and clinical utility.