Selective sacral rootlet section for experimental detrusor inhibition

✓ In 10 dogs, identifiable bundles of motor rootlets were stimulated as they left the conus medullaris at various levels. It is concluded that the bladder musculature is supplied by individual rootlets in variable combinations or patterns, originating from S-1 to S-4, with negligible overlapping innervation of the rectum and lower extremities. This experimental verification of clinical results suggests the possible value of a highly selective rhizotomy in humans with spastic neurogenic bladders (a procedure the authors term “selective sacral rhizidionotomy” from the Greek word rhizidion, meaning rootlet).