Is it the same thing to open a palace mouth and open a bone seam?

Before giving birth, pregnant women must open all the cervix (soft birth canal) and pelvis (hard birth canal). First, the uterine orifice is gradually opened. Under the action of oxytocin, the uterine orifice is slowly opened, or it can come out of the uterus. Incision means that the fascia ligament at the joint between the bones that make up the pelvis is properly stretched after being subjected to external force, which is different from opening the uterus.