Bar-Maor J A, Eitan A
Department of Pediatric Surgery, Rambam Medical Center, Faculty of Medicine, Technion-Israel Institute of Technology, Haifa.
J Pediatr Gastroenterol Nutr. 1987 Jul-Aug;6(4):559-61. doi: 10.1097/00005176-198707000-00012.
The position of the normal anus was numerically defined by the ano-genital index, which is the distance from the anus to the vagina or scrotum divided by the distance between the vagina or scrotum and the coccyx. In idiopathic constipation, one must look for an anterior displacement of the anus, which might be the cause of the constipation.