A System of midwifery : including the diseases of pregnancy and the puerperal state . havehut too faithfully copied. For these obliquities are of comparativelytrifling importance, and should never have been bracketed with theother and really important movements. Until he has fully masteredthe latter, we should ad\ is€ the student to take no note of these obliqui-ties. The mosi recent writers on the subject (Kiineke, Hodge, and Duncan) all dispute the conclusions of Naegele and argue in favor of the parallelism, or, as they term it, Synclitism, of the biparietal and cervico-bregmatic plane- of
A System of midwifery : including the diseases of pregnancy and the puerperal state . havehut too faithfully copied. For these obliquities are of comparativelytrifling importance, and should never have been bracketed with theother and really important movements. Until he has fully masteredthe latter, we should ad\ is€ the student to take no note of these obliqui-ties. The mosi recent writers on the subject (Kiineke, Hodge, and Duncan) all dispute the conclusions of Naegele and argue in favor of the parallelism, or, as they term it, Synclitism, of the biparietal and cervico-bregmatic plane- of the child- head, with the planes of the pelvis and the vagina. With reference to the observations of 1 298 MECHANISM OF LABOR. [CHAP. Hodge, it may be remarked that he, his celebrated predecessor Dewees,and. we may add, the American obstetrical school generally, have longrepudiated many of the doctrines of Naegele which are still taught inEnglish text-books. Fig. IOC) shows the relation which the head,when about to pass in this position, bears to the pelvic structures. Fig. The head approaching the position. First position as seen from ahove.(Schultze.) No sooner is the head born than another rotation takes place,—theface of the child turning spontaneously to the right thigh of the is due to the manner in which the shoulders descend. In we are looking downwards into the cavity of the uterus. It willbe observed that the broad, or transverse, diameter of the shouldersand of the breech occupies the left or opposite oblique diameter to thatin which the antero-posterior measurement of the head is the birth of the head, the shoulders encounter the same difficultyfrom the ischial spines ; and as the rotation must be such as to bringthe anterior shoulder, as it did the occiput, under the pubic arch, theleft, or posterior shoulder revolves into the hollow of the sacrum. Thismovement of the shoulders takes place, therefore, in a
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Keywords: ., bookcentury1800, bookdecade1870, booksubjectobstetrics, bookyear1
