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Open AccessJournal ArticleDOI

Radiological Assessment of Osteo-Arthrosis

J. H. Kellgren, +1 more
- 01 Dec 1957 - 
- Vol. 16, Iss: 4, pp 494-502
TLDR
It was concluded that, to ensure maximum uniformity in grading x rays in field surveys and therapeutic trials, all readings should be made by the same observer, preferably at a single session.
Abstract
In a previous study (Kellgren and Bier, 1956), three sets of x rays of the hands were used to assess interand intra-observer differences in interpreting changes of rheumatoid arthritis. Wide disagreement between observers was found, and it was concluded that, to ensure maximum uniformity in grading x rays in field surveys and therapeutic trials, all readings should be made by the same observer, preferably at a single session. The advisability of having a set of standard reference films was also considered.

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Citations
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National Arthritis Data Work-group. Estimates of the prevalence of arthritis and other rheumatic conditions in the United States. Part II

TL;DR: In this paper, the best available estimates of the US prevalence of and number of individuals affected by osteoarthritis, polymyalgia rheumatica and giant cell arteritis, gout, fibromyalgia, and carpal tunnel syndrome, as well as the symptoms of neck and back pain are provided.
References
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Journal ArticleDOI

Radiological signs of rheumatoid arthritis; a study of observer differences in the reading of hand films.

TL;DR: It is suggested that the observer error in reading x rays of the hands and feet for rheumatoid arthritis may not be very great, and it has become necessary to know more about the reproducibility of such x-ray gradings by any given individual.
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