In the surgical treatment of anorectal malformations, posterior sagittal anorectoplasty (Pena) allowed direct exposure of the anal sphincter and levator ani muscle enabling the rectum to pass through the ideal portion. For female imperforate anus such as ano- (recto) vestibular fistula. "cut back" operation and anal transplantation have been widely used for many years. We adopted the idea of Pena in the treatment of these malformations, and proposed a new approach "anterior sagittal anorectoplasty." in which all muscles were indentified by the use of an electrical stimutation at the wound of perineal incision, followed by anorectoplasty. We have performed this procedure in 5 cases with fairly satisfactory results. Further fllow-up studies are necessary in the furture.
