The American text-book of obstetrics for practitioners and students . ted on its transverse axis and is driven low into the pelviccanal—an exaggeration of the movement seen in a rachitic pelvis. The lowerportion of the sacrum and the coccyx are pulled sharply forward by the mus-cles attached to them, so that the sacrum is bent at a .-harp angle in its lowerthird. The innominate hones are bent laterally at a point slightly anteriorto the sacro-iliac junction, and the iliac hones mav he folded upon themselveshorizontally. The inclination of the pelvis as a whole is much increased. 52 AMERICAN TE
The American text-book of obstetrics for practitioners and students . ted on its transverse axis and is driven low into the pelviccanal—an exaggeration of the movement seen in a rachitic pelvis. The lowerportion of the sacrum and the coccyx are pulled sharply forward by the mus-cles attached to them, so that the sacrum is bent at a .-harp angle in its lowerthird. The innominate hones are bent laterally at a point slightly anteriorto the sacro-iliac junction, and the iliac hones mav he folded upon themselveshorizontally. The inclination of the pelvis as a whole is much increased. 52 AMERICAN TEXT-BOOK OF OBSTETRICS. The diagnosis may be based upon the following symptoms: The diseasebegins usually during pregnancy or lactation, with dull aching pains in theextremities, the back, the lumbar region, and over the anterior portion of thepelvis. Every movement increases these pains. As the disease progressesthe bones of the spinal column are so bent and compressed that the individualis diminished in stature to an extraordinary degree. She may lose as much as. Fig. 28.—Hirsts case of osteomalacia (front and profile views in different perspective). a foot and a half in height (Fig. 28). The gait of an osteomalacic patient ispeculiar. In order to compensate for the approximation of the thighs broughtabout by the collapse of the pelvis the individual must turn almost through ahalf circle in order to bring one foot in front of the other. Upon examinationof the pelvis tenderness upon pressure is discovered over its anterior wall. Theflexibility of the pelvic bones may be demonstrated by direct pressure, and an DYSTO( I \.
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