The head is delivered by extension in normal labour only i.e. occipito - anterior positions. Return to breech presentation is liable to occur. If labour occurs the foetus will have a lesser chance for survival. Relatively less liquor. More irritability of the uterus.
Cephalic delivery is safer for the mother and foetus.
1- Large sized foetus. 3- Short umbilical cord. 4- Uterine anomalies as bicornuate or septate uterus. 5- Irritable uterus. Tocolytic drugs may be started 15 minutes before the procedure to overcome this.