. Röntgen ray diagnosis and therapy . Fig. 195. — Photograph o fCase of TuberculousKnee, Illustrated byFig. 196. DISEASES OF THE BOXES AND JOINTS 269 years of age, who had noticed a small and painless -welling formedin the dorsal surface of his right hand eleven years before. Thisswelling increased gradually, bul until it grew painful no medicaladvice was sought. At the firsl examination a globular tumourwas noticed in the dorsum of the right hand, of the size of amoderately large apple. Its surface was red, its consistence irreg-. Fig. 196.—Tuberculous Foci In and Around the Knee-joint. (See
. Röntgen ray diagnosis and therapy . Fig. 195. — Photograph o fCase of TuberculousKnee, Illustrated byFig. 196. DISEASES OF THE BOXES AND JOINTS 269 years of age, who had noticed a small and painless -welling formedin the dorsal surface of his right hand eleven years before. Thisswelling increased gradually, bul until it grew painful no medicaladvice was sought. At the firsl examination a globular tumourwas noticed in the dorsum of the right hand, of the size of amoderately large apple. Its surface was red, its consistence irreg-. Fig. 196.—Tuberculous Foci In and Around the Knee-joint. (See Fig. 195.) ular, some parts of it being hard, while others appeared soft to thetouch. The centre of the tumour was occupied by a large ulcera-tion, which was surrounded by several fistulous tracts, from whichturbid sero-pus issued. The first impression was that the tumourrepresented an osteosarcoma, and it was feared that speedy ampu-tation would be indicated. It was decided to make use of theRontgen rays, which proved to be a valuable means of information,since the true condition was at once precisely defined. A skia-graph, which was taken with a tube of medium hardness (), showed that the third metacarpophalangeal joint was the 270 THE RONTGEN RAYS
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