Occipitoposterior positions

Vaginal examination• The findings will depend upon the degree offlexion of the head; locating the anteriorfontanelle in the anterior part of the pelvis isdiagnostic but this may be difficult if caputsuccedaneum is present.• The direction of the sagittal suture andlocation of the posterior fontanelle will helpto confirm the diagnosis {The posteriorfontanelle (three radiating sutures) ispalpable posteriorly}