The Dublin practice of midwifery / By Henry Maunsell.

  • Henry Maunsell
Date:
1834
Catalogue details

Licence: Public Domain Mark

Credit: The Dublin practice of midwifery / By Henry Maunsell. Source: Wellcome Collection.

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    The third pelvic articulation is that between the two ossa innominata themselves, and denomi- nated the symphysis picbis. This differs from the sacro-iliac synchondroses in having an interarticu- lar substance interposed between the two osseous surfaces, in addition to the fibro-cartilage covering each of those. The joint is secured by bands of ligament, which, for the reason already assigned, are stronger and more bulky externally. There is also a ligament termed the sub-pubic, which occupies the apex of the arch formed by the rami of the pubic bones. The last articulation is that between the sacrum and coccyx. In it the union is effected by an in- terposed substance analagous to that between the vertebrae, and is secured by ligaments anteriorly and posteriorly. The sacro-coccygeal joint is ca- pable of flexion and extension to a considerable extent, and is the only one in the pelvis naturally admitting of motion. In certain animals, as the cow, the other articulations become relaxed about the period of parturition ; and it has been surmised by some authors, but without sufficient proof, that a si- milar relaxation always occurs in the human female. The pelvis, formed, as we have described, of several bones firmly united together, has been, by one of those whimsical resemblances of which anatomists are so fond, declared to be conical in shape. Little information, however, is to be ac- quired from this description; and a much better
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