Shoulder Dystocia Posterior Sacral Promontory - Stretching of the Brachial Plexus Nerves
Animation of the baby's shoulder becoming impacted first posteriorly on the sacral promontory and then anteriorly on the mother's pubic symphysis as maternal forces continue to push the baby down the birth canal resulting in a stretching of the baby's brachial plexus nerves. A healthcare professional places the mother in McRoberts position, freeing the shoulder and allowing the baby to be delivered.