This study was designed to evaluate the usefulness of pudendal nerve block in the dorsal approach under EMG monitoring. The patient is placed in the prone position. The location of pudendal nerve is identified using the both ischial tuberosities and greater trochanter. We have performed the pudenal nerve block with 5% phenol solution, under the EMG monitoring. The patient was able to void with percussion method. There has been no impairment in urinary continence.

We experienced an excellent effect of bilateral pudendal nerve block in the dorsal approach, under EMG montoring, using 5% phenol solution in detrusor sphincter dyssynergia of neurogenic bladder.