. The principles and practice of obstetricy, as at present taught, by James Blundell ... To which are added, notes and illustrations. By Thomas Castle ... Of thisoval, the long measure is from side to side, a a, the short from before back-ward, bb 5 the average width between the sacrum and the pubis is fourinches ; the average dimension from side to side is five inches; the oblique, orthat which is stretching between the acetabula and the sacro-iliac synchon-drosis, about five and one-eighth, or five and one-fourth. You must therefore bear this in mind, for although in ordinary labors wefind t
. The principles and practice of obstetricy, as at present taught, by James Blundell ... To which are added, notes and illustrations. By Thomas Castle ... Of thisoval, the long measure is from side to side, a a, the short from before back-ward, bb 5 the average width between the sacrum and the pubis is fourinches ; the average dimension from side to side is five inches; the oblique, orthat which is stretching between the acetabula and the sacro-iliac synchon-drosis, about five and one-eighth, or five and one-fourth. You must therefore bear this in mind, for although in ordinary labors wefind the head of the child with its face lying to one side of the pelvis andthe occiput to the other side, and thus, the long length of the head and thelong length of the oval brim of the pelvis corresponding mutually; yet itsometimes happens, that the head of the child is placed in a labor with theface not laterally but in front, and then the long length of the head is opposedto the short length of the superior aperture, or brim, and consequently, if thepelvis be small and the foetis large, it cannot be transmitted, unless you alter * III, fig. 1 p. £4 ANATOMY OF the position of the head, and make its longest length correspond with thelong measure of the plevis. A Outlet of the Pelvis.—The outlet or inferior aper- ture varies in its shape, according as you take thepelvis, with or without its ligaments. Without the li-gaments, the outlet is of a very irregular form, consis-ting of three large scollops, one upon either side, andone in front of vast obstetric interest, known underthe name of the arch of the pubis* which arch is ob-viously important; because, in ordinary labor, whenthe head is at the outlet of the pelvis, it facilitatesthe passage, by allowing the occiput to lie forth infront, and thus makes more room within. In the living subject, where you have the ligaments in connexion with thebones of the pelvis, the outlet is more of a o^iadrangular form; and like thesuper
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Keywords: ., bookcentury1800, bookidprinciplespracti00, booksubjectobstetrics
