The practice of obstetrics, designed for the use of students and practitioners of medicine . until the left hip meets with the resistance of the pelvic floor. (3) Anterior rota-tion of the left hip: Rotation of the buttocks occurs when the pelvic floor is must be clearly understood that while the greatest horizontal diameter of thefetal ellipse is the antero-posterior, yet the greatest diameter of the presentingpart or breech is the transverse diameter, the bitrochanteric, 3^ inches ( cm.)(Fig. 704). One must also remember that in the stage of descent that buttock ortrochanter w
The practice of obstetrics, designed for the use of students and practitioners of medicine . until the left hip meets with the resistance of the pelvic floor. (3) Anterior rota-tion of the left hip: Rotation of the buttocks occurs when the pelvic floor is must be clearly understood that while the greatest horizontal diameter of thefetal ellipse is the antero-posterior, yet the greatest diameter of the presentingpart or breech is the transverse diameter, the bitrochanteric, 3^ inches ( cm.)(Fig. 704). One must also remember that in the stage of descent that buttock ortrochanter which lies in the anterior segment of the pelvis is the lowest, and hencethe first to be influenced by the trough-like shape of the pelvic floor and deflectedto the front at the pelvic outlet, thus bringing the long diameter of the presentingpart .(jDitrochanteric) into the long diameter of the pelvic outlet (antero-posterior),and fulfilling the great principle in the mechanism of labor, namely, accommoda-tion (Figs. 708, 709). The left, lower, or anterior buttock is thus brought to the34. Fig. 93-99 J^ 705.—Relative Frequency of the BreechPositions, 530 PATHOLOGICAL LABOR. FIRST BREECH Sacro-Anterior, L. S. a.
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectobstetrics, bookyear1
