Lectures on the principles and practice of midwifery / by James Blundell ; Edited by Charles Severn.

  • Blundell, Dr., 1790-1878
Date:
1839
Catalogue details

Licence: Public Domain Mark

Credit: Lectures on the principles and practice of midwifery / by James Blundell ; Edited by Charles Severn. Source: Wellcome Collection.

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    and nerve—the vein not of so much importance, the artery of con- siderable interest, and the nerve frequently mentioned by the ac- coucheur, as the trunk of it is liable to be compressed and injured under the passage of the foetal head. The sacro-ischiatic ligaments are a set of ligaments lying on the sides of the pelvis, and somewhat behind. They are divided into two pairs; the one lying externally, the other within, and hence the appellation of the eoctenmul and internal. The external sacro- ischiatic ligament, arising strong and narrow from the tuberosity of the ischium, passes outwards, backwards, and upwards, becom- ing very broad, to be inserted into the lower part of the sacrum and upper part of the os coccygis. The internal ligament arising narrow and strong from the ischial spine, passes upwards and backwards, to be inserted broadly into the lower part of the sacrum and the upper part of the os coccygis laterally, much in manner like the former. JOINTS. When resuming the pelvis, we examine it with a view to its articulations, we find they are several; and the hip, the lumbar, the sacro-iliac, the sacro-coccygeal joints, together with the sym- physis pubis may all claim our attention ; but of these articula- tions the three last only are of obstetric importance. SACRO-COCCYGEAL JOINT. The sacro-coccygeal joint is a moveable joint, allowing the os coccygis to recede considerably, moving on the sacrum, so as to enlarge the outlet of the pelvis posteriorly to the extent of an inch. This joint, constituted in the same manner as the other joints of the body, has articulating surfaces, invested with car- tilage, covered also with synovial membrane, the ends of the two bones being connected by capsular ligament, which, rising all round from the extremity of the sacrum, is inserted all round into the extremity of the coccyx, and completes the articulation. It sometimes happens that this sacro-coccygeal joint is the subject of disease or accident, and hence its principal interest to the