An American text-book of genito-urinary diseases, syphilis and diseases of the skin . Fig. 124.—Mul the bladder : its smaller portion, projecting into the bladder (a, Fig. 125), wasfacetted in the same manner as the other stones; the portion lying in thediverticulum (6, Fig. 125), which was that part of the stone spontaneouslyfractured, about the size of a pigeons egg, was broken into three fragments(c, d, e, Fig. 126) which could be so accurately fitted together as to leave nodoubt that they originally constituted that part of the stone. The dark lineson the oval end (6, Fig. 125) indicate th
An American text-book of genito-urinary diseases, syphilis and diseases of the skin . Fig. 124.—Mul the bladder : its smaller portion, projecting into the bladder (a, Fig. 125), wasfacetted in the same manner as the other stones; the portion lying in thediverticulum (6, Fig. 125), which was that part of the stone spontaneouslyfractured, about the size of a pigeons egg, was broken into three fragments(c, d, e, Fig. 126) which could be so accurately fitted together as to leave nodoubt that they originally constituted that part of the stone. The dark lineson the oval end (6, Fig. 125) indicate the lines of division between the frag-ments ; the fragments are here glued together in order to show the originalform of the stone before it was The two theories advanced to explain the occurrence of spontaneousfracture are those of mechanical force and of chemical action. The writerssecond case shows that the fracture may take place in the absence of thefirst of these agents, since the fracture was located in that part of the stonewhich lay within the diverticulum, and was consequently protected from 416 VESICAL CALCULUS. any mechanical force capable of producing it, while that part which pro-jected into the cavity of the viscus and was subjected to such force was notfractured. The two parts of the stone have the same chemical patient had never introduced anything but a soft-rubber catheter intothe bladder. The work of Ord and Rainey, already quoted, suggests an explanation ofthe phenomenon of spontaneous fracture. They found that spheres of car-bonate of lime which had formed in solutions of gum, split radially and dis-
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Keywords: ., bookcentury1800, bookdecade1890, booksubject, booksubjectsyphilis
