Diseases of cattle, sheep, goats Diseases of cattle, sheep, goats and swine diseasesofcattle00mous Year: 1920 702 Infectious diseases. limb bones are attacked as a rule only in the vicinity of diseased articulations. The vertebral lesions corresponding to those in Pott's disease in human beings are very difficult to discover before they produce com- plications, such as depression of the spine, compression of the spinal cord, paralysis, etc. Lesions of the bones of the head or of the limbs are charac- terised by local deformity, destruction of osseus tissue, invasion of surrounding tissues, a
Diseases of cattle, sheep, goats Diseases of cattle, sheep, goats and swine diseasesofcattle00mous Year: 1920 702 Infectious diseases. limb bones are attacked as a rule only in the vicinity of diseased articulations. The vertebral lesions corresponding to those in Pott's disease in human beings are very difficult to discover before they produce com- plications, such as depression of the spine, compression of the spinal cord, paralysis, etc. Lesions of the bones of the head or of the limbs are charac- terised by local deformity, destruction of osseus tissue, invasion of surrounding tissues, and by local symptoms peculiar to tumours originating in the periosteum. Tuberculosis of joints produces special symptoms resembling those seen in the ' white swellings' of man, that is, diffuse, cedematous, warm and moderately painful swelling of adjacent parts, ac- companied by lame- ness of varying in- tensity. According to Guillebeau and Hess, many conditions de- scribed as strain or rheumatic arthritis are really tuberculous in character. They may remain station- ary for a long time, or even recede under treatment. As a rule, however, these forms of tuberculous arthritis assume the fungoid type and prove incurable. They are clinically distinguished from ordinary arthritis by the enormous swelling, which involves the extremities and a portion of the shafts of the bones. The adjacent muscles are chronically con- tracted, and the diseased joint is held semi-flexed. In course of time, if the patients are kept alive, abscess formation may occur, but this is seldom seen in practice, because the animals are slaughtered. Fict. 280.—Perforating tuberculosis of the right frontal region. TUBERCULOSIS OF THE BRAIN. Tuberculosis of the nervous centres, localised either in the meninges or the brain proper, may attack both young and old animals, not as a primary condition, but as a sequel to visceral disease, which, however, may have produced no outward indications, a fact that rende
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