[Rarely occurring complications in vacuum extraction].

The authors report on two seldom observed complications of vacuum extraction, infraction or fracture of the parietal bone of newborn. They healed up without sequels in the further psychomotoric development. The authors consider vacuum extraction as a contribution to obstetric operation practise. They recommend smaller cups with a maximum diameter of 40 mm and a suction vacuum only to 0,6 kp/cm2 (0,06 M Pa) to be used.