Presentations of the face and the bregma

At the time of a Childbirth, the face and the bregma are presentations of the fetal head at the entry of the maternal basin with a variable inflection:

little bent for a bregma
right (“military” attitude) for a face

The success of the childbirth by the natural ways is in fact dependant on this inflection, which can vary during work:

If the fetal head manages to bend and adopt then the position bregma , even the position top badly bent , the normal childbirth is possible provided that the newborn is not too large.
If the fetal head does not manage to be bent, it remains in position of the face and the Césarienne is obligatory, with the risk to lead to a Enclavement of the presentation.

More information: fetal Presentation

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