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Page history last edited by PBworks 17 years, 12 months ago

1977 Criteria for the Classification of Acute Arthritis of Primary Gout


The American Rheumatism Association sub-committe on classification criteria for gout analyzed data from more than 700 patients with gout, pseudogout, rheumatoid arthritis, or septic arthritis. Criteria for classifying a patient as having gout were a) the presence of characteristic urate crystals in the joint fluid, and/or b) a topus proved to contain urate crystals by chemical or polarized light microscopic means, and/or c) the presence of six of the twelve clinical, laboratory, and X-ray phenomena listed.




1. More than one attack of acute arthritis


2. Maximum inflammation developed within 1 day


3. Monoarthritis attack


4. Redness observed over joints


5. First metatarsophalangeal joint painful or swollen


6. Unilateral first metatarsophalangeal joint attack


7. Unilateral tarsal joint attack


8. Tophus (proven or suspected)


9. Hyperuricemia


10. Asymmetric swelling within a joint on x ray*


11. Subcortical cysts without erosions on x ray


12. Monosodium urate monohydrate microcrystals in joint fluid during attack


13. Joint fluid culture negative for organisms during attack




  • This criterion could logically be found on examination as well as on x ray. However the protocol did not request this information in regard to examination.


Wallace SL, Robinson H, Masi AT, Decker JL, McCarty DJ, YĆ¼ T-F. Preliminary criteria for the classification of the acute arthritis of primary gout. Arthritis Rheum 1977;20:895---900.

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