Inclusion Criteria:  Age 18 to 70 years old Able to undergo the informed consent/assent process Radiologically confirmed spinal cord injury Spinal cord injury between C3 and T6 Classified with American Spinal Injury Association Impairment Scale (AIS) A or B Spinal cord injury Stable medical, physical and psychological condition as considered by Investigators Greater than 1 year since initial injury and at least 6 months from any required spinal instrumentation Confirmed orthostatic hypotension and autonomic dysreflexia Willing to attend all scheduled appointments  Exclusion Criteria:  Diseases and conditions that would increase the morbidity and mortality of spinal cord injury surgery The inability to withhold antiplatelet/anticoagulation agents perioperatively History of myocardial infarction or cerebrovascular event Other conditions that would make the subject unable to participate in testing in the judgment of the investigators Current and anticipated need for opioid pain medications or pain that would prevent full participation in the trial in the judgement of the investigators Current clinical diagnosis of mental illness Clinically significant cognitive impairment Current substance or alcohol abuse Botulinum toxin injections in the previous 6 months Presence of significant pressure ulcers Recurrent urinary tract infection refractory to antibiotics Current pregnancy Current breast feeding Unhealed spinal fractures Presence of indwelling baclofen or insulin pump