After removal of the uterus ' Hysterectomy' the vagina top part is called Vault or Apex . The Vaginal Vault or Apex can descend or prolapse to various degrees. Occasionally it prolapses completely so the vaginal inside is all out with the vaginal vault pointing several centimeters outside the vulva 'Vaginal Inversion'. Sacrospinous Colpopexy operation is designed to fix the vaginal vault or apex higher up to Sacrospinous ligament 'a very stong ligament' in the back / side of the pelvis.