. An American text-book of obstetrics. For practitioners and students. Fig. 227.—Diameters of the fetal head: A, cross-section of the fetal head through the suboccipito-bregmatic and biparietal diameters . B, cross-section of the fetal head through the biparietal and occipito-frontal diameters; C, cross-section of the fetal head through the biparietal and occipito-mental diam-eters ; D, cross-section of the fetal head through the suboccipito-frontal and bitemporal diameters. of engagement at the brim. Secondly, even when good flexion is present andthis circular cross-section is in the inferior
. An American text-book of obstetrics. For practitioners and students. Fig. 227.—Diameters of the fetal head: A, cross-section of the fetal head through the suboccipito-bregmatic and biparietal diameters . B, cross-section of the fetal head through the biparietal and occipito-frontal diameters; C, cross-section of the fetal head through the biparietal and occipito-mental diam-eters ; D, cross-section of the fetal head through the suboccipito-frontal and bitemporal diameters. of engagement at the brim. Secondly, even when good flexion is present andthis circular cross-section is in the inferior strait or excavation, the brim isoccupied by the frontal portion of the head in combination with the neck—aby no means unimportant factor in the mechanism of even the most normalcases. It is therefore important to remember the shape and dimensions of thecross-sections, which include, first, the biparietal and occi pi to-frontal diameters(Fig. 227, b) ; second, the biparietal and occipito-mental diameters (Fig. 227, c);third, that which cuts the head and neck th
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectobstetrics, bookyear1
