Case report: Obstetrical maneuver in a case of persistent mentum posterior face presentation

Face presentation during labor is uncommon. While mentum anterior presentation is mechanically compatible with vaginal delivery, persistent mentum posterior presentation typically necessitates cesarean section. We report a case of a fetus in mentum posterior face presentation managed expectantly due to excellent labor progression. At full cervical dilation, an ultrasound-guided digital maneuver successfully converted the presentation to occipito-iliac anterior, enabling vaginal delivery of a healthy 3350 g infant without instrumental assistance. This obstetric technique offers a potential alternative to cesarean section in selected cases of mentum posterior face presentation, and argues for individualized management by an experienced obstetrician and ultrasound guidance.