Vacuum delivery in all-fours position: is it a valuable, brand-new option?

Since all-fours birth position is considered to decrease the rate of failure of vaginal birth and the risk of negative maternal and fetal outcomes, we wondered if all-fours would be favorable in case of operative vaginal deliv-ery with obstetrical vacuum. We performed a simulation of vacuum appli-cation on a mannequin settled in all-fours position and we filmed this new application for diffusion among clinicians. We suggest that the all-fours position be considered and investigated in further studies as a possible way of delivery in case of operative vaginal delivery.