Among the complications of labor not requiring surgical interference, none is more important or fraught with greater danger to child and mother than posterior rotation of the occiput. We desire to substitute this term for that commonly employed —"occipito-posterior positions"—believing that the method of obstetric study that recognizes but two positions for each presentation is more rational and serves a better purpose than the more complicated system that calls for many positions. We shall then make but two positions for each presentation. For example, a vertex presentation has a first and a second position. The first is the usual one, the back of the child directed toward the left side of the mother, and the vertex directed slightly toward the left side of the mother's pelvis. The second position of a vertex presentation is that in which the back of the child is directed toward the mother's right side, and
DAVIS EP. THE TREATMENT OF POSTERIOR ROTATION OF THE OCCIPUT DURING LABOR. Read in the Section of Obstetrics and Diseases of Women, at the Forty-third Annual Meeting of the American Medical Association, held at Detroit, Mich., June, 1892. JAMA. 1892;XIX(1):9–12. doi:10.1001/jama.1892.02420010015001b
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