A manual of obstetrics . GENERATIVE ORGANS AND PARTURIENT CANAL. 2/ represents the path followed by the fetus during parturi-tion (see Fig. 6). The inferior strait or outlet (Fig. 8) of the pelvis is like-wise cordate in shape, but this is subject to variation, owing. Fig. 8. —Diameters of the pelvic outlet (Dickinson) to the niovability of the coccyx, so that during labor it be- ^ comes almost circular. Its boundaries are the pubes, the /^*ax>rami of the pubes and ischium, the tuberosities of the f» ischium, the sacro-sciatic ligaments, and the coccyx. Thediameters of this strait are—the a
A manual of obstetrics . GENERATIVE ORGANS AND PARTURIENT CANAL. 2/ represents the path followed by the fetus during parturi-tion (see Fig. 6). The inferior strait or outlet (Fig. 8) of the pelvis is like-wise cordate in shape, but this is subject to variation, owing. Fig. 8. —Diameters of the pelvic outlet (Dickinson) to the niovability of the coccyx, so that during labor it be- ^ comes almost circular. Its boundaries are the pubes, the /^*ax>rami of the pubes and ischium, the tuberosities of the f» ischium, the sacro-sciatic ligaments, and the coccyx. Thediameters of this strait are—the anteroposterior, conjugate,or coccypiibic, measured from a line dropped perpendicularlyfrom the lower border of the symphysis pubis to the tip ofthe coccyx, 9^ cm. ( in.), increasing to 11 cm.( in.) in labor, the coccyx being displaced backwardi^ cm. (.5906 in.); the transverse or bisiscJiiac, extendingbetween the inner borders of the tuberosities of the ischia,11 cm. ( in.); and the oblique, measured from thejunction of the descending pubic ramus and ascendingischial ramus of one side to the center of the greater sacro- 28 A MANUAL OF OBSTETRICS. sciatic ligament of the opposite side, 12^ cm. ( in.).The axis of the outlet, if exten
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectobstetrics, bookyear1
