From 1966 to 1984, 417 female patients were operated for genital prolapse in the department of surgical gynecology of the Salpêtrière Hospital (Pr Blondon's department). The results of the surgical treatment were studied in the posterior perineum from an anatomical (rectocele) and functional point of view (indiced rectal disorders). This study allows drawing several conclusions: when the context leads to deciding to operate the prolapse through an abdominal approach, it is desirable, in order to reduce the risk of postoperative rectocele, to systematically insert a posterior prosthetic band, which will be tethered as low as possible on the posterior aspect of the vaginal (after a sufficiently low extensive rectovaginal cleaving). The Orr-Loygue rectopexy must remain indicated for rectal prolapse, even more so as it is associated with incontinence. Since this procedure often causes constipation of even more complex exoneration disorders, it must be reserved for prolapse associated to a large rectocele (type IV) or an invalidating dyschezia.