Restoration of Bladder Function in Spinal Cord Injury
The aim of this study is to develop improved methods of restoring function to the neurogenic bladder, using electrical stimulation without cutting nerves in patients with spinal cord injury. The investigators will test 5-10 subjects with existing sacral anterior root stimulation (SARS) devices and look at the effects of high frequency (up to 600Hz) compared to the usual low frequency stimulation on bladder function. The investigators are particularly interested in whether it is possible to reproduce a 'functional' dorzal rhizotomy using high frequency stimulation of the S2 efferent nerves
• Patients with clinically complete spinal cord injury who have undergone implantation of a Finetech Brindley Bladder controller, with or without sacral posterior rhizotomy.
• Male or female, aged 18 years or over.
• Patients willing and able to give informed consent to involvement in the study