The practice of obstetrics, designed for the use of students and practitioners of medicine . the presence of a synovial membrane,* thoughMorris, Depaul, and French authorities generally deny its existence save in * Allen. THE PELVIC JOINTS. 377 exceptional cases. There are, besides, four ligaments—a posterior, a superior,an anterior, and an inferior sub-pubic or ligamentum arcuatum. By the lastthe pubic arch is filled out and made smooth and rounded (Fig. 510). In thepregnant woman the symphysis together with the other joints becomes moremovable. The softening of pregnancy gives rise to a slig
The practice of obstetrics, designed for the use of students and practitioners of medicine . the presence of a synovial membrane,* thoughMorris, Depaul, and French authorities generally deny its existence save in * Allen. THE PELVIC JOINTS. 377 exceptional cases. There are, besides, four ligaments—a posterior, a superior,an anterior, and an inferior sub-pubic or ligamentum arcuatum. By the lastthe pubic arch is filled out and made smooth and rounded (Fig. 510). In thepregnant woman the symphysis together with the other joints becomes moremovable. The softening of pregnancy gives rise to a slight gliding connected surtaces are practically not separated, as, indeed, this separationwould have to be considerable to increase the antero-posterior diameters to anyextent. Following the investigations of Budin, I have made examinations of severalhundreds of pregnant women in three maternity services, over a period often years, in order to ascertain if there were movements in the pubic articu-lation. The ball of the finger was placed directly against the lower margin of. Fig. 507.—Male Bony Pelvis. the symphysis pubis, and then the woman was asked to walk or stand first onone and then the other leg. The side of the pubis corresponding to the free legwas found to descend, while the bone on the other side remained fixed. I con-cluded that there is invariably present in this joint a certain amount of mobilitywhich increases with the advance of pregnancy and with the number of preg-nancies, and when present to a considerable degree the subjects have no difficultyin walking; the mobility is very slight in primigravidas. (See page 114.) Sacro-iliac Joints.—The sacro-iliac articulation joins the lateral surfaces ofthe sacrum and ilium. Some anatomists, among whom is Luschka, believe thatthere is a synovial membrane, especially marked in pregnancy. Morris does nothold this view; at least he does not believe the synovial membrane to be constant,although it is more a
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectobstetrics, bookyear1
