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the act of turning; especially the manual turning of the fetus in delivery.
bipolar version turning done by acting upon both poles of the fetus by either external or combined version.
cephalic version turning of the fetus so that the head is the presenting part.
external version that done using outside manipulation.
internal version that done using the hand or fingers inserted through the dilated cervix.
pelvic version version by manipulation of the breech (buttocks) of the fetus.
podalic version conversion of a more unfavorable presentation into a footling presentation.
spontaneous version one that occurs without aid from any extraneous force.
turning of the fetus effected by the unaided contraction of the uterine muscle.
Etymology: L, sponte, free will, vertere, to turn
a change in the lie of a fetus that occurs without manipulation. Also called spontaneous evolution.
spon·ta·ne·ous ver·sion(spon-tā'nē-ŭs vĕr'zhŭn)
Turning of the fetus effected by the unaided contraction of the uterine muscle.