A theoretical and practical treatise on midwifery : including the diseases of pregnancy and parturition and the attentions required by the child from birth to the period of weaning . nches are to be deducted for the thickness of thebase of the sacrum, and J an inch for that of the symphysis ;therefore leaving for the sacro-pubic interval . . 4^ 6. From the tuber ischii of one side to the posterior superior spinous process of the opposite ilium, the mean extent, in an ordinary pelvis, is 7 7. From the anterior superior spine on one side to the posterior supe- rior spine of the other/the mean is
A theoretical and practical treatise on midwifery : including the diseases of pregnancy and parturition and the attentions required by the child from birth to the period of weaning . nches are to be deducted for the thickness of thebase of the sacrum, and J an inch for that of the symphysis ;therefore leaving for the sacro-pubic interval . . 4^ 6. From the tuber ischii of one side to the posterior superior spinous process of the opposite ilium, the mean extent, in an ordinary pelvis, is 7 7. From the anterior superior spine on one side to the posterior supe- rior spine of the other/the mean is 8£ 8. From the spinous process of the last lumbar vertebra to the ante- rior superior iliac side of either spine, the mean is . . 7 9. From the trochanter major of one side to the posterior superior spinous process of the opposite one, 9 DEFORMITIES OF THE PELVIS. 567 From the middle of the lower border of the symphysis pubis to the posterior superior spinous process on either side, . . 6| inches. For the purpose of ascertaining the dimensions just given, in the living female,as well as the principal modifications they may have undergone, accoucheurs Fig. have invented a great number of instruments,to which the title of pelvimeters has been ap-plied ; but I can only allude here to those inmost common use. The pelvimeter, or callipers, described byBaudelocque (Fig. 85), consists of two metal-lic blades bent in a semicircular form, so asto embrace the largest part of the pelvis intheir concavity. The extremity of each oneis terminated by a lenticular button, which isintended to be applied at the end of the lineto be measured; a small rule, marked by agraduated scale, traverses the branches justat the point where the curved blade joins thestraight handle, and shows the degree of sepa-ration at the points exactly. This rule shuts i , ,11 ii p ,i Baudelocques callipers applied to the mea- up in a deep groove along the handle of the surement of the aatero-Posterior diamet
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Keywords: ., boo, bookcentury1800, booksubjectmidwifery, booksubjectobstetrics
