A transvaginal cervicoisthmic cerclage (TVCIC) is a less common type of cerclage but has greater success rates than a traditional cerclage. This procedure involves a cerclage that is placed vaginally, above the cardinal ligaments, close to the internal os (the place where the uterus and cervical canal meet). It can be placed before or during pregnancy. The TVCIC uses mersilene tape, tied around the cervix to fortify it. The cerclage can be taken out to allow a vaginal birth, though some may choose to leave it in permanently for a caesarean section.
The advantage of this procedure is that it is placed much higher than traditional cerclages, almost at the level of the internal os. The TVCIC is much less invasive than the transabdominal cerclage (TAC) because it is placed vaginally, and the TVCIC and TAC have similar success rates. Furthermore, it has the added benefit of allowing for a vaginal delivery, whereas the TAC does not allow that option.