. Lectures on natural and difficult parturition . Inferior surface of same section, showing the antero-posterior trans-verse and oblique measurements of the britn of the pelvis.—The dottedlines represent the lateral measurements of the inclined plane. second is the plane of the brim, of which the antero-posteriormeasurement, from the centre of the upper edge of the sacrumto the top of the symphysis pubis, is about four inches. Thetransverse, from the centre of one ilium to the other, is 5|inches, and the two oblique measurements, passing from eachpectineal eminence to the sacro-iliac articulat
. Lectures on natural and difficult parturition . Inferior surface of same section, showing the antero-posterior trans-verse and oblique measurements of the britn of the pelvis.—The dottedlines represent the lateral measurements of the inclined plane. second is the plane of the brim, of which the antero-posteriormeasurement, from the centre of the upper edge of the sacrumto the top of the symphysis pubis, is about four inches. Thetransverse, from the centre of one ilium to the other, is 5|inches, and the two oblique measurements, passing from eachpectineal eminence to the sacro-iliac articulation of the oppositeside, about 5 inches. 26 LECTURES OiN PARTURITION. Remaining section of pelvis, showing the antero-posterior, transverseand oblique measurements of cavity. We have, then, the plane of the cavity, one most generallyomitted, and perhaps the most important of the three. Theantero-posterior measurement of this plane passes immediatelyhelow the symphysis pubis parallel to that of the brim, directlybackwards to a point above the middle of the sacrum ; it is about4,^ inches. The transverse passes from the centre of one plane ofthe ischium to the other, and is 4| inches; and the oblique liesbetween the centres of those muscular masses which fill up theobturator and ischiatic spaces. Their measurement is uncertain ;but it is more than 5 inches.
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Keywords: ., bookcentury1800, bookdecade1840, bookidlec, booksubjectobstetrics
