. Journal of radiology . less destruction of joint sur-faces, and interference with the growthof bone. There is no new bone forma-tion. The occurrence of periosteal re-action and bony ankylosis in these jointsis the result of secondary infection. Dur-ing the process of repair there is in-crease in density due to the deposit oflime salts. All writers agree that very littletreatment is necessary, since the diseaseis self limited and tends to spontaneouscure. Blanchard (13) of Chicago says,early and continued mechanical treat-ment that protects the head of the femurfrom weight bearing, jar and co
. Journal of radiology . less destruction of joint sur-faces, and interference with the growthof bone. There is no new bone forma-tion. The occurrence of periosteal re-action and bony ankylosis in these jointsis the result of secondary infection. Dur-ing the process of repair there is in-crease in density due to the deposit oflime salts. All writers agree that very littletreatment is necessary, since the diseaseis self limited and tends to spontaneouscure. Blanchard (13) of Chicago says,early and continued mechanical treat-ment that protects the head of the femurfrom weight bearing, jar and concus-sion, will usually preserve the head inits rounded shape, but observation of anumber of treated and untreated casesshows that the best available mechani-cal treatment has little or no effect inpreventing or causing atrophy of thebone and muscles of the leg of the dis-eased side. Legs (1) states, the heal-ing process tends to come about natu-rally, and by watching the patient andaffording any accessory, which dimin-. Figure V.—Case III. Figure VI.—Case III.—Same case as shown in FigureV., seven years later. 263 A STUDY OF LEGGS DISEASE—GILES ishes strain upon the hip to facilitaterecovery by means of repair, is all thatcan be done. Case I.—J. B., male, age six, com-plained of pain in the left hip, and hisparents noticed a slight limp about oneyear before the roentgenograms weremade. He did not give a definite his-tory of injury, but had always beenstrong and active. There was no familyhistory of tuberculosis or syphilis andthe Von Pirquet and Wassermann re-actions were negative. He had no con-stitutional symptoms. Flexion, abduc-tion and extension were only slightlylimited. In July, 1920, the boy wasa perfect picture of health and hislimp was scarcely noticeable. Hisfather would not give his consent to asecond radiographic examination. (July, 1914): Roentgenogramshows the head flattened, epiphysisthin, joint surface not affected. Theright hip is normal. Case
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