McCalls Culdoplasty. Culdoplasty is a procedure that's used with what's called a vault suspension. That involves fixing the vaginal cuff at the top of the vagina to strong structures like pelvic ligaments or some of the fascia in the pelvis.hat's part of a vaginal hysterectomy...they gotta attach the vagina to something! The culdoplasty is then used to remove the cul-de-sac, which is a deep pouch in front of the rectum that separates the uterus from the large intestine.