. The science and art of midwifery . Fig. 76. Pronl riewof pelvis, with ligaments. (Quain.) OF LABOR. 147 following help to close in the pelvis. Across the obturator foramen isstretched a fibrous Beptum, complete excepl where a small opening isKit for the passage of the nerve and vessels. The great Bacro-sciatic ligament extends partly from the lower bor-der of the sacroiliac articulation, and partly from the lower border of. GREAT SCIATICFORAMEN. ALL SCIATICLIGAMENT. SMALL SCIATIC FORAMEN. ^EAT SCIATIC LIGAMENT. Fig. 70.—Transverse section through pelvis, to show the sacro-sciatic
. The science and art of midwifery . Fig. 76. Pronl riewof pelvis, with ligaments. (Quain.) OF LABOR. 147 following help to close in the pelvis. Across the obturator foramen isstretched a fibrous Beptum, complete excepl where a small opening isKit for the passage of the nerve and vessels. The great Bacro-sciatic ligament extends partly from the lower bor-der of the sacroiliac articulation, and partly from the lower border of. GREAT SCIATICFORAMEN. ALL SCIATICLIGAMENT. SMALL SCIATIC FORAMEN. ^EAT SCIATIC LIGAMENT. Fig. 70.—Transverse section through pelvis, to show the sacro-sciatic ligaments.(Tarnier et Chantreuil.) the sacrum and coccyx, to the tuberosity of the ischium. The smallsacro-sciatic ligament lies in front of the preceding, and extends fromthe side of the sacrum and coccyx to the spinous process of theischium. These two ligaments close the large and small sacro-sciaticnotches, and convert them into two foramina, which bear the samename. The Inclination of the Pelvis.—The plane of the brim of the pelviswas formerly supposed to run nearly parallel to the horizon, whencethe term horizontal ramus, applied to the tipper branch of thepubes. As a fact, however, in the upright position, the inclination ofthe brim to the horizon varies from 45c to LOO . According to Meyer,the center of gravity, instead of passing directly through the medianline of the aeetabula, is situated somewhat posteriorly, so t
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Keywords: ., bookcentury1800, bookdec, booksubjectobstetrics, booksubjectwomen
