. Obstetrics: the science and the art. THE PELVIS. 47 22. At the base or top, is seen an oval-sliapecl articular surface,whicli is the seat upon which the lowest lumbar vertebree rests, andfrom which, as from a plinth, rises upwards the tall spinal sacro-vertebral facette being cut obliquely backward causes thesacrum to deviate from the vertical line and re-treat or go backwards and downwards behindthe spinal column, and thus cause the appear-ance of a projection in front, overhanging theinlet or superior aperture of the basin, as in theannexed cut (Fig. 9) in which the finger isto
. Obstetrics: the science and the art. THE PELVIS. 47 22. At the base or top, is seen an oval-sliapecl articular surface,whicli is the seat upon which the lowest lumbar vertebree rests, andfrom which, as from a plinth, rises upwards the tall spinal sacro-vertebral facette being cut obliquely backward causes thesacrum to deviate from the vertical line and re-treat or go backwards and downwards behindthe spinal column, and thus cause the appear-ance of a projection in front, overhanging theinlet or superior aperture of the basin, as in theannexed cut (Fig. 9) in which the finger istouching the promontory of the sacrum orsacro-vertebral angle, or projection ofthe sacrum, for it has all these names. 23. The anterior face of the sacram is nearlyan equilateral triangle, of four inches to thesides, and its concavity is deep enough, theforamina being stopped with cement, to hold an ounce or even an ounce and a half of water. It is of great momentthat this curve should be just right, as too great or too small a depthis
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Keywords: ., bookcentury1800, bookdecade1860, booksubjectobstetrics, bookyear1
