Dr. Conquest's outlines of midwifery : intended as a text-book for students, and a book of reference for junior practitioners.

  • Conquest, Dr.
Date:
1854
Catalogue details

Licence: Public Domain Mark

Credit: Dr. Conquest's outlines of midwifery : intended as a text-book for students, and a book of reference for junior practitioners. Source: Wellcome Collection.

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    there remain vestiges of the oblique, transverse, and spinous processes. [The internal smooth concavity of the sacrum is termed the hollow of the sacrum. This curve is full of interest to the obstetric practitioner. If it exceed or fall short of the normal proportion, it will, in either instance, offer an impediment to the passage of the child's head.—J. M. W.] The Os CocCTGis* is a little bone at the apex of the sacrum, to which it is united by an intervening fibro-cartilage, and by a capsular ligament with synovial membrane. It consists of three or four ir- regularly shaped triangular pieces, which usually admit of considerable motion during parturition; which process is interfered with when bony union has taken place between them and the sacrum. The OS coccygis affords support to the pelvic viscera. JUNCTION OF THESE BONES. The bones of the pelvis are united by various ligaments, and, there being no motion, the union is termed synarthrosis. The sacrum and ilia are joined by two plates of a white dense and elastic cartilage, and therefore the union is termed symphysis. Firm union is also given by numerous ligamentous bands, usually called the internal and external sacro-iliac ligaments. The sacrum and ischia are united by the internal * The Os Coccygis is thought to resemble the biU of a cuckoo, and therefore has derived its name from kokkuJ.