. Radiography and radio-therapeutics . vely rarely seen in the humansubject, the condition should not be altogether ignored as a source of disease of bone. The lower orupper jaw may be involved, theappearances presented being some-what similar to those of tuber-culosis ; the tendency in the- earlystages is toward hyperplasia of*. WKk ^ 1^ 3m bone, with considerable increase ^^ ■^,> of the periosteal element; later on necrosis may supervene and apersistent sinus occur. An examin-ation of the pus should always bemade in doubtful cases. Otherparts of the body likely to be in-volved are the


. Radiography and radio-therapeutics . vely rarely seen in the humansubject, the condition should not be altogether ignored as a source of disease of bone. The lower orupper jaw may be involved, theappearances presented being some-what similar to those of tuber-culosis ; the tendency in the- earlystages is toward hyperplasia of*. WKk ^ 1^ 3m bone, with considerable increase ^^ ■^,> of the periosteal element; later on necrosis may supervene and apersistent sinus occur. An examin-ation of the pus should always bemade in doubtful cases. Otherparts of the body likely to be in-volved are the ribs and sternum ;when the pleura or lung are in-volved, the spine may becomeinvaded secondarily to the lungand mediastinal infections, whenabscess formation may first callFig. 228.—Wrist and iiund of child, showing ciiauges attention to the disease. ia lower end of radius and ulna due to rickets. ■,>. , ^ rm ■> ■ e ^ Rickets.—The chief changesare found in the neighbourhood of the epiphyses ; the epiphyseal cartilage.


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