. American practice of surgery ; a complete system of the science and art of surgery . e masculine type of pelvis inthe female; the justo-minor and dwarftypes of pelvis; and the pelvis withabnormal inclination, either too great ortoo little, causing dystocia. In addition, one recognizes the fol-lowing kinds of pelvis:— Spondylolisthetic pelvis, in which thelower lumbar vertebrae project forwardinto the inlet of the pelvis. This formis usually congenital, but may followinjurj^ or (when rachitis is present atthe same time) overloading. Kyphotic pelvis—a funnel-shaped pelvis approaching the infan
. American practice of surgery ; a complete system of the science and art of surgery . e masculine type of pelvis inthe female; the justo-minor and dwarftypes of pelvis; and the pelvis withabnormal inclination, either too great ortoo little, causing dystocia. In addition, one recognizes the fol-lowing kinds of pelvis:— Spondylolisthetic pelvis, in which thelower lumbar vertebrae project forwardinto the inlet of the pelvis. This formis usually congenital, but may followinjurj^ or (when rachitis is present atthe same time) overloading. Kyphotic pelvis—a funnel-shaped pelvis approaching the infantile type, andassociated with kyphosis. Osteomalacic pelvis—a form of pelvis which is caused by the weight of thesuperimposed body in combination with the counter-pressure of the distortion is often extreme and the deformity complex. Transversely Narroired Ankylotic Pelvis. (Roberts.)—This form of pelvis isdue to bilateral ankylosis of the sacro-iliac joints and defective development ofthe upper part of the saciimi. (Fig. 1.) All transverse diameters are greatly 3. Fig. 1. — Bilateral Ankjdosis of Sacro-IliacSynchondroses, with transverse narrowing ofthe pelvis—so-called Roberts pelvis. (FromWaldeyers Das Becken.) 4 AMERICAN PRACTICE OF SURGERY. narrowed, and the sacrum is abnormally deep and shows convex instead of con-cave transverse diameter. Obliquely narroived pelvissi form of jjelvis which is due to defective develop-ment of one wing of the sacrum or to unilateral ankylosis, either congenital orsecondary to sacro-iliac disease. (Fig. 2.) The true conjugate diameter islonger, but all other diameters, and especially that of the exit, are of the spine is usually present as an effect of the j^ielvic deformity. Coxalgic pelvis—a form of pelvis which is due chiefly to tuberculous coxitis.(Fig. 3.) The pelvic half of the affected side becomes atrophied and is more in-clined than its fellow. The condition produced is much like the precedi
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectsurgery, bookyear1906
