A treatise on the science and practice of midwifery . Extreme Degree of Osteo-malacic Deformity. Ohliquely Contracted Pelvis.—That form of deformity in which oneoblique diameter only is lessened, has received considerable attention,from having been made the subject of special study by Kaegele, andis generally known as the ohliquely contracted pelvis (Fig. 131). It isa condition that is very rarely met with, although it is interestingfrom an obstetric point of view, as throwing considerable light onthe mode in which the natural development of the pelvis is is difficult to diagnose,
A treatise on the science and practice of midwifery . Extreme Degree of Osteo-malacic Deformity. Ohliquely Contracted Pelvis.—That form of deformity in which oneoblique diameter only is lessened, has received considerable attention,from having been made the subject of special study by Kaegele, andis generally known as the ohliquely contracted pelvis (Fig. 131). It isa condition that is very rarely met with, although it is interestingfrom an obstetric point of view, as throwing considerable light onthe mode in which the natural development of the pelvis is is difficult to diagnose, inasmuch as there is no apparent externaldeformity, and probably it has never, in fact, been detected beforedelivery. It has a very serious influence on labor ; Litzmann foundthat out of 28 cases of this deformity, 22 died in their first labors, 374 LABOR Fig. Obliquely Contracted Pelvis. (AfterDuncan.) and 5 more in subsequent deliveries. The prognosis, therefore, isvery formidable, and renders a knowledge of this distortion, rarethough it be, of much importance. Its essential characteristic is flattening and want of developmentof one side of the pelvis, associated with anchylosis of the corre-sponding sacro-iliac latter is probably always present,and it seems to be most generally acongenital malformation. The lateralhalf of the sacrum on the same side,and the entire innominate bone aremuch atrophied. The promontory ofthe sacrum is directed towards thediseased side, and the symphysis pubisis pushed over towards the healthyside. The main agent in the productionof this deformity is the absence of thesacro-iliac joint, which prevents theproper lateral expansion of the pelvicbrim on that side, and allows thecounter-pressure, through the femur, to push in the atrophied osinnominatum to a much greater extent than usual. The chi
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Keywords: ., bookcentury1800, bookdecade1870, bookidtre, booksubjectobstetrics
