Perineal and Rectal Nerve Recruitment Order Varies During Pudendal Neurostimulator Implant Surgery.

Introduction: Pudendal nerve stimulation (PNS) is an off-label therapy for patients experiencing pelvic pain and voiding dysfunction. The pudendal nerve has two efferent branches to the rectum and perineum. Only the rectal branch is monitored via external anal sphincter electromyography during the implant procedure to help determine the lead position.