A textbook of obstetrics . under demand Cesarean section. In lesser grades the womanmay be delivered spontaneously or by forceps. Obliquely Contracted Pelvis from Imperfect Development of theAla on One SMe of the Sacrum [Naegele Pelvis).—This pelvis wasfirst described in 1834 by Franz Carl Naegele,1 but had been noticed as early as 1779without a full understand-ing of its significance (). Characteristics. — 1 hepelvic inlet has an ovalshape, with the small pointof the oval directed tothe atrophied side of thesacrum. The sacral ala isatrophied or is absent notonly in that portion of theb
A textbook of obstetrics . under demand Cesarean section. In lesser grades the womanmay be delivered spontaneously or by forceps. Obliquely Contracted Pelvis from Imperfect Development of theAla on One SMe of the Sacrum [Naegele Pelvis).—This pelvis wasfirst described in 1834 by Franz Carl Naegele,1 but had been noticed as early as 1779without a full understand-ing of its significance (). Characteristics. — 1 hepelvic inlet has an ovalshape, with the small pointof the oval directed tothe atrophied side of thesacrum. The sacral ala isatrophied or is absent notonly in that portion of thebone entering the sacro-iliac joint, but also in thetransverse process alongits whole length. Thesacro-iliac joint on this side is ankylosed in the vast majority oicases, but not invariably. The sacrum is narrow, asymmetrical,and turned with its anterior face toward the deformed side oi thepelvis. The promontory is not only turned in this direction, but isalso pulled over to the diseased side. The innominate bone on the. Fig. 290.—Obliquely contracted pelvis. 1 Die Heidelberger klinischen Annalen, Bd. \. p. 449. More elaboratelydescribed in ln-^ folio atlas, has Schrag verengte Becken, nebsl einem Anhangliber die wichtigsten Fehler des Weibl. Beckens I eberhaupt, mil 16 Tafeln, Mainz,1837. ANOMALIES TN THE FORCES OF LABOR. 435 deformed side is pushed as a whole upward, backward, and inward,and its anterior face is pushed inward and backward. The tuber-osity of the ischium, as a necessary consequence of the displace-ment of the innominate bone, is higher than its fellow, projectsfurther into the pelvic canal, and is so turned that it looks ratheranteroposteriorly than laterally. The spine of the ischium isbrought quite close to the corresponding edge of the sacral boneand juts prominently forward into the pelvic canal. The whole in-nominate bone on the diseased side lacks its normal curvature atthe iliopectineal line, and may run almost straight from the sacro-iliac junctio
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Keywords: ., bookcentury1800, bookdecade1890, bookidtex, booksubjectobstetrics
