During pregnancy, many physiological changes will occur in the mother’s body, the pubic symphysis ligament will be relaxed in early pregnancy, and gradually aggravated with the increase of pregnancy weeks, and even cause the separation of the pubic bone, no obvious clinical symptoms in mild cases, but in serious cases, there will be pain at the pubic bone.
In case of emergency delivery, obstructed labor, cephalopelvic disproportion, multiple births, forceps delivery, etc., it may also cause or aggravate the separation of the pubic symphysis and cause pain, and the widening of the pubic symphysis gap can be seen on imaging, but the degree of pain does not show a positive correlation with the widening of the gap.