Improving Pelvic Rehabilitation Using Epidural Stimulation After Spinal Cord Injury

Inclusion Criteria: * Spinal Cord Injury (supra-sacral) * AIS A-D * \>18 years; * SCI sustained \>12 months ago; * Neurogenic detrusor overactivity (NDO) confirmed on urodynamics; * Responsive to dorsal genital nerve stimulation * Willing and able to provide informed consent * Stable medical, physical and psychological condition as considered by the investigators * Able to understand and interact with the study team in English * Sufficient upper limb function to operate the device * Suitably optimised bladder and bowel routine Exclusion Criteria: * Transected cord or SCI related to a neurodegenerative disease * Any device or metal work in situ that would exclude the patient from having eSCS implanted * Intra-detrusor botulinum toxin injections within the last 6 months * Previous surgical intervention on bladder sphincters * Any diseases and conditions that would exclude the patient from eSCS and/or surgery, for example, degenerative spinal pathology, syrinx and/or tumor. * Recurrent urinary tract infection refractory to antibiotics * Women who are pregnant or intending to become pregnant (pregnancy test obligatory for woman of childbearing potential) or breast feeding, or lack of safe contraception for women of childbearing capacity. * Inability to follow the procedures of the study, e.g. due to language problems, psychological disorders or dementia of the participant * Participation in another study with investigational drug within the 30 days preceding and during the present study * Enrolment of the investigator, his/her family members, employees, and other dependent persons.