rectovaginal fascia rectovaginal fascia the rectovaginal fascia (often called rectovaginal septum or sometimes fascia of otto) is a thin structure separating the vagina and the rectum. this corresponds to the rectoprostatic fascia in the male. rectovaginal fasciasagittal section of the lower part of a female trunk, right segment. (rectovaginal fascia not labeled, but region is visible.)median sagittal section of female pelvis. (rectovaginal fascia not labeled, but region is visible.)detailsidentifierslatinfascia rectovaginalista98a04.5.03.004fta23832fma19934anatomical terminology clinical significance perforations in it can lead to rectocele.