Obstetrics : the science and the art . are at the bottom of the drawing on the right, e,/,while just behind the acetabulum may be seen projecting backwardsthe spine of the ischium. At h is the tuberosity of the ischium, andthe pubis (at &), whose descending ramus drops downwards to meetand unite with the ascending branch of the ischium, h is the foramenovale, foramen thyroidean, or obturator foramen; /, in the bottom ofthe cup, is the acetabulum; g is the spina ischii. I now present an inside view of the right os innominatum, in 1 lore the letter a is placed on the symphyseal end of th
Obstetrics : the science and the art . are at the bottom of the drawing on the right, e,/,while just behind the acetabulum may be seen projecting backwardsthe spine of the ischium. At h is the tuberosity of the ischium, andthe pubis (at &), whose descending ramus drops downwards to meetand unite with the ascending branch of the ischium, h is the foramenovale, foramen thyroidean, or obturator foramen; /, in the bottom ofthe cup, is the acetabulum; g is the spina ischii. I now present an inside view of the right os innominatum, in 1 lore the letter a is placed on the symphyseal end of the os pubis,which, when joined to the left os coxalc, makes the pubic symphysis;I) is the body of the pubis running backwards to the dotted line onthe acetabulum, where it ends; c is the descending ramus pubis, andd the ascending ramus ischii. The letter c is on the plane of theischium, and / on the iliac fossa or venter; gt the anterior superiorspinous process of the ilium; h, its anterior inferior spinous process; THE PELVIS. 53. while i and h respectively indicate the posterior superior and the pos-terior inferior spinous processes of the os ilium. Towards the rightside of the drawing may be seen, at /, the ear-shaped surface that isdenominated the auricular facette, which, being covered with fibro-cartilage, and united to asimilar facette on the sa-crum, composes the sacro-iliac joint. The Studentwill please to note the threedotted lines in the middleof the figure, which indi-cate the respective limits ofpubis, ischium, and ilium inthat direction, and he willsee that one-fifth of the ace-tabulum belongs to thepubis; that two-fifths of it are contributed by the ischium; while the upper and outer two-fifths areformed out of the os ilium. By examining these dotted lines, he willlearn what parts of the os innominatum belong to each of its three con-stituent members. In fact, the os innominatum, as has been alreadyseen, was originally three separate bones; which at or about the p
Size: 1766px × 1415px
Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., boo, bookcentury1800, booksubjectmidwifery, booksubjectobstetrics
