A textbook of obstetrics . Fig. 307.—Pressure of the promontory upon the head in a contracted pelvis (Smellie).. Fig. 308.—Overlapping of the cranial bones in a futile attempt of the head toengage in the superior strait of a rachitic pelvis (Smellie). 29 45° Til E 1 \l 1110 LOG V OF L A /> OR. of the head and its escape arc more rapid in the rachitic pelvis,because of the shallow canal and the expanded outlet. Injuriesto the childs head and to the maternal tissues from pressure arecommon. In the former, a sharp indentation may be seen on thatportion of the skull pressed against the promonto
A textbook of obstetrics . Fig. 307.—Pressure of the promontory upon the head in a contracted pelvis (Smellie).. Fig. 308.—Overlapping of the cranial bones in a futile attempt of the head toengage in the superior strait of a rachitic pelvis (Smellie). 29 45° Til E 1 \l 1110 LOG V OF L A /> OR. of the head and its escape arc more rapid in the rachitic pelvis,because of the shallow canal and the expanded outlet. Injuriesto the childs head and to the maternal tissues from pressure arecommon. In the former, a sharp indentation may be seen on thatportion of the skull pressed against the promontory in the effortsto secure engagement, the so-called spoon-shaped depression,with fracture ^\ the parietal bone. Localized necroses are notinfrequently seen in the maternal structures, where they have beennipped between the childs head and prominent portions of thepelvic bones—namely, in the cervical tissues over the promon-tory, or very rarely in the posterior vaginal vault, and in theanterior vaginal wall behind the symphysis and the ridge of thepubic bones. When the slough separates, openings may be
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Keywords: ., bookcentury1800, bookdecade1890, bookidtex, booksubjectobstetrics
