Doug·las mech·a·nism

(dŭg'lăs),

mechanism of spontaneous evolution in transverse lie; extreme lateral flexion of the vertebral column with birth of the lateral aspect of thorax before the buttocks.

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Douglas,

John C., Irish obstetrician, 1777-1850.

Douglas mechanism - mechanism of spontaneous evolution in transverse lie.

Douglas spontaneous evolution - a mechanism whereby molding of the fetus and impaction of the shoulder and prolapsed arm occurs in transverse lie, allowing vaginal delivery with the lateral aspect of the thorax following the prolapsed shoulder.

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