What technique involves flexing the mother's thighs towards her abdomen to aid in delivery?

The technique that involves flexing the mother's thighs towards her abdomen to aid in delivery is known as the McRoberts maneuver. This method is particularly useful in cases of shoulder dystocia, where the baby's shoulders become lodged behind the mother's pelvic bone during delivery.

The McRoberts maneuver works by positioning the mother's legs in a way that increases the pelvic diameter, providing more room for the baby to pass through. By flexing the thighs and pulling them towards the abdomen, the angle of the pelvis changes, which can help free the baby's shoulder and facilitate delivery. This position can also help to flatten the sacrum and widen the pelvic outlet, making it easier for the baby to be born successfully.

The other techniques mentioned do not specifically involve this particular leg positioning for the purpose of addressing shoulder dystocia.