Long-term Follow-up for Epidural Stimulation in SCI

SCI participants who previously had an epidural stimulation device and completed the initial study can continue using stimulation programs at home once they have proven to study staff that they can use the programs and device on their own. This follow-up study will give insight into potential benefits from long-term use of spinal stimulation. In-person follow-up visits (approx. 2 hours long) will be requested at 6-months, 1 year, and once a year until the device is removed or approved for commercial use. If the participant can't come to Kessler for an in-person visit, a remote tele-health visit will be arranged. Visits include: * medical history since the last visit will be collected * a physical exam * assessments completed during the study previously enrolled in including: * Testing of muscle and limb responses to stimulation * Assessment of sitting, standing, and stepping function * Bladder and bowel function tests * Spasticity assessments * Blood pressure monitoring * Questionnaires * MRI * TMS * DXA * The study physician will contribute to decisions about which of these assessments are most appropriate to perform at a particular visit * The investigators will review stimulation logs * The investigator will review results of the assessments and discuss continuing in the follow up study.