Before revision: While the seven cardinal movements is considered the normal mechanism for labor and delivery of human babies, pelvic sizes and shapes can vary among female humans which can increase the risk of errors in rotations and delivery, especially since these moments are done completely by the baby.
After revision: While the seven cardinal movements is considered the normal mechanism for labor and delivery of human babies, pelvic sizes and shapes can vary among female humans which can increase the risk of errors in rotations and delivery, especially since these movements are done completely by the baby.