A treatise on the science and practice of midwifery . other,and the pubic arch is narrowed. Obstruction to deli very will be chieflymet with at the lower parts and outlet of the pelvic cavity, for, althoughthe transverse diameter of the brim is narrowed, there is generally suf-ficient space for the passage of the head. Roberts Pelvis.—Another form of transversely-contracted pelvis isknown-as Roberts pelvis (Fig. 139), having been firsl discovered by Robert of Coblentz. Ii is in fad aFig- i; double obliquely-contracted pelvis, de- pending on anchylosis of both sacro-iliac joints, and consequenl
A treatise on the science and practice of midwifery . other,and the pubic arch is narrowed. Obstruction to deli very will be chieflymet with at the lower parts and outlet of the pelvic cavity, for, althoughthe transverse diameter of the brim is narrowed, there is generally suf-ficient space for the passage of the head. Roberts Pelvis.—Another form of transversely-contracted pelvis isknown-as Roberts pelvis (Fig. 139), having been firsl discovered by Robert of Coblentz. Ii is in fad aFig- i; double obliquely-contracted pelvis, de- pending on anchylosis of both sacro-iliac joints, and consequenl defectivedevelopment of the innominate shape of the pelvic brim Is mark-edly oblong, and the sides of the pel-vis are more or less parallel with each other. The out Id i- also much con-tracted transversely. The amount ofobstruction is \<t\ great, so that,cording to Schroeder, out of 7 w<ll authenticated cases tin < toe arearj sec Roberts or Double Obliquely-contracted f; ; i ; ,; Pelvis. (AfteriWan.) 1l,,n u:l^ required iii ».. 388 LAB OB. Fig. 140. [The Porro-Csesarean operation has only been called for in one instance,by reason of this rare condition. Prof. Josef Spath of Vienna operatedwith success to mother and child on March 7, 1883. The c. v. measured3f inches, and the bis-ischiatic only 1 inch.—Ed.] Deformity from Old-standing Hip-joint Disease.—Another cause oftransverse deformity occasionally met with is luxation of the head ofthe femur, depending on old-standing joint-disease. The head of thefemur in this case presses on the innominate bone at the site of disloca-tion, and the result is that the iliac fossa on the affected side, or both ifthe accident happens on both sides, is pushed inward, the transversediameter of the brim being lessened. The tuberosity of the ischium is,however, projected outward, so that the outlet of the pelvis is increasedrather than diminished. Deformity from Tumors, Fractures, etc.—Obstruction of the pelviccavity
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectobstetrics, bookyear1
