[Intrapartum sonographic study in clinical suspicion of cephalopelvic disproportion].

The realisation of a clinical disproportion is--still nowadays--a high demand for obstetricians. The ultrasonic examination of pelvis represents an intermediate stage between clinical and radiological examination. Description of pelvis by measuring the true conjugate and intrapartal diagnosis of abnormalities of adjustment and bearing of the fetus. It enables in many cases to set the indication of caesarean section earlier and safer.