The Röntgen rays in medical work (1899) (14733921176)

Identifier: rntgenraysinmedi00wals (find matches)

Title: The Röntgen rays in medical work

Year: 1899 (1890s)

Authors: Walsh, David

Subjects: X-rays Radiography X-Rays Radiography

Publisher: London : Baillière, Tindall and Cox

Contributing Library: Francis A. Countway Library of Medicine

Digitizing Sponsor: Open Knowledge Commons and Harvard Medical School

Text Appearing Before Image:

Fig. 52.—Lyxn Thomass Distortion Experiment. (Six specimens of ulnae with the bases of their styloid processes sawn through, but not detached, with a fret-saw. On the right is a radius with six fissures, made by the same fret-saw, through its ulnar margin.) the external condyle of the humerus, the reading of the Eontgenphotograph itself, without another of the sound elbow taken undersimilar conditions, became a matter of pure conjecture. A fracture may not be shown on the plate because the aj-rayshave not hit the gap in the bone in their straight passage fromthe anti-kathode to the sensitive plate. Then the break itselfmay be oblique, and thus interpose overlapping edges of bone

Text Appearing After Image:

Fig. 53.—Injured Right Hand of Woekman,By Mr. Greenliil). MEDICAL AND SURGICAL APPLICATIONS 129 between the source of the rays and the photographic surface.Mr. Lynn Thomas described an instructive experiment at ameeting of the Eontgen Society, May 1, 1899. He madeparallel saw-cuts through the styloid processes of several ulnae,and several more cuts into a radius. The anti-kathode was fixedby means of a plumb-line directly over the second ulna, countingfrom the top downwards (see Fig. 52). The long axis of the tuberan parallel to the radius shown in the illustration. The latterbone was also incised with a saw, and loops of wire twisted fromthe bottom of each saw-cut round the sound part of the shaft.The result is striking. The two upper cuts in the ulnae show asunmistakable gaps. The next is less complete; while in thelowest one no change is visible in the bony substance. At thesame time progressive distortion is shown in the shape of theends of the ulnae. The radial incisions become

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1899

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