Surgery; its theory and practice . the upper and lower end of thetibia and lower end of the femur, but is oc-casionally met with in other bones. The causes especially leading to the ter-mination of osteitis in abscess are thought tobe the presence of tubercle or of micro-organisms, the strumous diathesis, or afeeble state of health. At times the abscesscan be apparently traced to an iniury. Pathology.—In the course of rarefyingosteitis the bone-trabeculge are graduallydestroyed, and their place is taken by asmall-cell-exudation, which now assumesthe form of granulation-tissue. This in the focu
Surgery; its theory and practice . the upper and lower end of thetibia and lower end of the femur, but is oc-casionally met with in other bones. The causes especially leading to the ter-mination of osteitis in abscess are thought tobe the presence of tubercle or of micro-organisms, the strumous diathesis, or afeeble state of health. At times the abscesscan be apparently traced to an iniury. Pathology.—In the course of rarefyingosteitis the bone-trabeculge are graduallydestroyed, and their place is taken by asmall-cell-exudation, which now assumesthe form of granulation-tissue. This in the focus of the inflamed spotsoftens and breaks down into pus, whilstthat around the centrally-softened spot con-stitutes the abscess wall, and forms to thenaked eye a distinct membrane (Fig. 69)lining the bony cavity {pyogenic membrane^.The bone around the absceos generally becomes sclerosed owingto the ossification of the inflammatory products, whilst Xi^^ bone isformed beneath the periosteum. In this way, as the abscess en- FlG. Abscess in end of tibia. Thepyogenic membrane is wellseen. (From St. Bartholo-mews Hospital Museum.) 2 24 DISEASES OF SPECIAL TISSUES. Fig. 70.
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectsurgery, bookyear1896
