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.

    18/370 (page 4)
    The Ischium *, or hip bone, forms the inferior part of the OS innomlnatum. The narrow and lowest part, on which we sit, is called its tuberosity, and is covered with a thick defensive cartilage. That portion of this bone which ascends obliqnely forwards and in- wards to join the ramus of the pubis is named its ramus. The spinous process at the inferior and pos- terior part gives origin to the internal sacro-ischiatic ligament. Just above this process is the great ischi- atic notch. [The SPINES of the iscliia have an angular form, and project backwards and inwards. When too much laent inwards, they may offer a serious impediment to the passage of the child's head. The tuberosities of the ischia may also become an occasional source of obstruction, either from thickening of the bone, the result of the constant action of vigorous muscles ; or to an opposite condition, in which these parts are imperfectly developed and compressed together, in consequence of a morbid softening of the osseous structure. — J. M. W.] The Pubis jj or share bone, is the anterior and smallest part of the os innominatum, and is nominally divided into head or tubercle, body, and ramus. At the termination of the body the surface is rough, and united to the opposite os pubis by a thick cartilage and ligamentous fibres, constituting the spnphisis • The Ischium is so calleil from laxvu, to siipjiort. f This bone is termed piiliis, IVom the Latiii word pubis, dcuotiug the downy hair of incipient puberty.