A textbook of obstetrics . tion was necessary. In threedelivery was spontaneous. Tin- fourth required forceps. Kleinfound, in 42,113 labors, only 7 women with kyphosis—a pro-portion of 1 : 601). Scoliosis.—In the scoliotic pelvis there is some degree ofoblique contraction. The innominate bone, toward which thelumbar vertebraeare bent, receiving the greater part of the weightof the trunk-, is pushed upward, inward, and backward by the ANOMALIES IX THE FORCES OF LABOR 473 extra pressure exerted upon it by the head of the femur. Theacetabulum oil this side is displaced anteriorly and upward ; the
A textbook of obstetrics . tion was necessary. In threedelivery was spontaneous. Tin- fourth required forceps. Kleinfound, in 42,113 labors, only 7 women with kyphosis—a pro-portion of 1 : 601). Scoliosis.—In the scoliotic pelvis there is some degree ofoblique contraction. The innominate bone, toward which thelumbar vertebraeare bent, receiving the greater part of the weightof the trunk-, is pushed upward, inward, and backward by the ANOMALIES IX THE FORCES OF LABOR 473 extra pressure exerted upon it by the head of the femur. Theacetabulum oil this side is displaced anteriorly and upward ; thesymphysis is pushed over on the opposite side. The degree ofasymmetry is rarely sufficient to constitute an obstruction inlabor. The scoliotic pelvis is, however, most often rachitic, andin addition to the asymmetry of scoliosis there may he the eon-traction of a rachitic pelvis (Figs. 339, 340). Kyphoscoliosis.—In a combination of kyphosis and scoliosisof the spinal column the pelvis will show, perhaps, the combined. Fig- 339-—Scoliosis. Rachiticpelvis: C. v., cm. Craniotomyon a dead child (authors case). Fig. 340.—Scoliotic rachitic pelvis features of both, but the kyphosis, being of rachitic, not ofcarious, origin, will not be angular, and will be situated high inthe dorsal region, where it may be compensated for entirely bylumbar lordosis (Figs. 341, 342 ). The kyphoscoliotic pelvisis usually an asymmetrically contracted rachitic pelvis (PI. 8,Fig. i). Lordosis.—Primary lordosis not the result of pelvic deform-ity or of spinal disease is very rare. Aside from some illustra-tions of it in an article by Neugebauer (/or. cit.\ the writerknows of no reference to the subject except his own (PI. S, 474 /HE PA111OLOGY OF LABOR.
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Keywords: ., bookcentury1800, bookdecade1890, bookidtex, booksubjectobstetrics
