For Patients/Families

Cephalopelvic disproportion
The most common reason for doing a cesarean section. Sometimes the infant's head is larger than the mother's pelvis, through which the head must pass in a vaginal delivery. Therefore, the safest way to deliver the infant is to do so by cesarean section. There are several ways to estimate fetal size and pelvic size. Physical exam and ultrasound are very useful in evaluating cephalopelvic disproportion.