Obstetrics : the science and the art . MECHANICAL INFLUENCE OF THE PELVIS. 77 positions, failing rotation to the front; and the Student will clearlyunderstand that it must be so, since the length of the line from fore-head to vertex is too great to permit it to be otherwise. Fifth Position—The fifth position, as in , is that in which thevertex is to the left ilio-sacral space, and the fore-head to the right aceta-bulum. Here, as in thefourth position, the me-chanical form of the pel-vis tends to turn the ver-tex first towards the leftacetabulum, and thenceto the arch. Fig. Sixth Pos
Obstetrics : the science and the art . MECHANICAL INFLUENCE OF THE PELVIS. 77 positions, failing rotation to the front; and the Student will clearlyunderstand that it must be so, since the length of the line from fore-head to vertex is too great to permit it to be otherwise. Fifth Position—The fifth position, as in , is that in which thevertex is to the left ilio-sacral space, and the fore-head to the right aceta-bulum. Here, as in thefourth position, the me-chanical form of the pel-vis tends to turn the ver-tex first towards the leftacetabulum, and thenceto the arch. Fig. Sixth Position.—The sixth position finds the vertex at the pro-montory of the sacrum. Madame Boivin met with only two suchpositions in 19,614 cases. I have seen a greater number of sixth positions than were met withby that celebrated midwife, although the labors witnessed by her sogreatly exceed in number all that I have seen. While the facts stated in her tables are to be relied upon for theirhistoric accuracy, her statistical results cannot be admitted as the lawof any practitioners future experience. My own practice, for example,which has been a private practice, has shown me a far greater numberof sixth positions than her vast clinical experience, in an immenselying-in hospital, brought to her view. Madame Lachapelle saw nosuch case. A case of vertex labor in the sixth position occurred to me this day,of which I made the following note, in order that I might set it downhere as a freshly remembered experience. Case.—July 8, 1848, 10$ Mrs. E I , Pine street. This is the six
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Keywords: ., boo, bookcentury1800, booksubjectmidwifery, booksubjectobstetrics
