Uterine relaxation

The incidence of uterine relaxation is about 1/20, which is caused by the inability of the uterine muscles to contract after the placenta is discharged to control blood loss. Mothers who give birth naturally, because the baby is delivered through the birth canal, the uterine head is swollen and loose. Cervical laxity is a cervical insufficiency caused by cervical hypoplasia or cervical laceration. It is the main cause of recurrent spontaneous abortion and recurrent premature labor in the late stage.