http://projectreporter.nih.gov/project_info_description.cfm?aid=8125116&icde=0
The end result is the creation of a new reflex where the bladder can be emptied by scratching or stimulating the skin (over the hip or thigh)...
http://clinicaltrials.gov/ct2/show/study/NCT01096459The primary aim of this study is reproducible bladder contraction of 15cm/H20 or more with scratching the cutaneous dermatome and no significant contraction with stimulation of the non-operated side.