The prevalence of fetal occipitoposterior position during labor is 20%. Compared to anterior positions, they are known to be at higher risk of complications (cesarean section, instrumental delivery, severe perineal laceration).~Maternal posturing is used during labor to facilitate the rotation of the fetal head in anterior position. Asymmetrical lateral decubitus is used frequently, without having ever been evaluated.~Our study aims to evaluate the efficacy of this maternal posturing, through a randomized open trial.~We hypothesized that posturing women in asymmetrical lateral decubitus allows increasing frequency of anterior fetal position after 1 hour.
Maternal posturing is used during labor to facilitate the rotation of occipitoposterior fetal position in anterior.~Our study aims to evaluate the efficacy of asymmetrical lateral decubitus for rotation of the fetal head.