A textbook of obstetrics . bone. The result of this pathological process in the. Fig. 293. —Split pelvis (Schauta |, Fig. 294.—Typical flal rachitic pelvis: ,5 1.; effec. tr. diam., 11 cm. (Mtit ter Museum, College of Physicians). pelvic bones is to make the pelvis more sensitive than it shouldbe to the mechanical forces that are brought to bear upon it. In the rachitic pelvis the size and shape of the pelvic canalare modified by three factors : the pressure from the trunk aboveand the counterpressure from the extremities below; the pullon the pelvic bones by ligaments and muscles; and an
A textbook of obstetrics . bone. The result of this pathological process in the. Fig. 293. —Split pelvis (Schauta |, Fig. 294.—Typical flal rachitic pelvis: ,5 1.; effec. tr. diam., 11 cm. (Mtit ter Museum, College of Physicians). pelvic bones is to make the pelvis more sensitive than it shouldbe to the mechanical forces that are brought to bear upon it. In the rachitic pelvis the size and shape of the pelvic canalare modified by three factors : the pressure from the trunk aboveand the counterpressure from the extremities below; the pullon the pelvic bones by ligaments and muscles; and an arresteddevelopment. Characteristics.—The effect upon the shape and size of thepelvic canal of rachitis in the pelvic bones is not varieties of contracted pelvis may result. The com-monest is the flat pelvis with some contraction of all the diam-eters, but a most marked diminution in the antcropcdiameter (Ficommon form, a simple tenor 94). There may be found, in addition to thisHat rachitic pelvis without alteration ol the transverse diameters, a equally
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Keywords: ., bookcentury1800, bookdecade1890, bookidtex, booksubjectobstetrics
