. Obstetrics: the science and the art. m, or sacro-vertebral angle, the entrance or inlet of thepelvis is rendered, by this promontory, narrower from front to rearthan it is when measured either transversely or obliqueh^, this sharpangle of the promontory being the posterior limit of the brim. Fromthe promontory there is a sort of raised line or ledge running roundthe pelvis, left and right, to stop at the top of the ossa pubis (Fig, 1),and because this raised line runs along both the ilium and the pubis,it is called the ilio-pubal line, or ilio-pectineal Romans called the pubic regio
. Obstetrics: the science and the art. m, or sacro-vertebral angle, the entrance or inlet of thepelvis is rendered, by this promontory, narrower from front to rearthan it is when measured either transversely or obliqueh^, this sharpangle of the promontory being the posterior limit of the brim. Fromthe promontory there is a sort of raised line or ledge running roundthe pelvis, left and right, to stop at the top of the ossa pubis (Fig, 1),and because this raised line runs along both the ilium and the pubis,it is called the ilio-pubal line, or ilio-pectineal Romans called the pubic region pecten, hence linea ilio-pec-tinea; for, as the pudenda is clothed with hair, the term pectenwas applied to that region, and the bone of the pubis has been calledthe OS pectinis. Juvenal speaks of the pecten in Sat. vi. 370. Inguina traduntur medicis jam p e c t i n e nigro. 8. Now this linea ilio pectinea serves as a sort of stricturing band,to make the pelvis small at the inlet and produce a narrowing there. THE PELVIS. 41 Fig. This narrow passage, from the greater down into the lesser basin, iscalled the superior strait of the pelvis ; all that is above itbeing upper basin, and all that is below it being lower pelvis, lowerbasin,- pelvic canal, excavation, cavity or t r u e p e 1 v i s; for by somany different names it is known in the profession. Hence, let thestudent learn what the superior strait is—its form, and its dimensions;let him well and truly learn the shape and size of the true pelvis, andhe will find that while it has an inlet or abdominal or superiorstrait, it also has anoutlet, inferior orperineal strait — theformer at the beginning,and the latter at the endof the pelvic canal—allof which requires his care-ful study. 9. These two straits ofthe pelvis differ from eachother very much in shapeand direction, as may bediscovered by inspectionof the Figs. 4 and 6, which represent the superior and inferior straits of the pelvis. In Fig. 4, oneis looking do
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Keywords: ., bookcentury1800, bookdecade1860, booksubjectobstetrics, bookyear1
