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S47 THE RELIABILITY AND PREDICTIVE VALUE OF RADIOLOGICAL WRIST CLASSIFICATION SYSTEMS IN RHEUMATOID ARTHRITIS.



Abstract

Various radiological classification systems exist for rheumatoid wrist progression but few have been evaluated for reliability and clinical application. In order to research these three sets of wrist radiographs of 35 rheumatoid patients, with an average duration of disease of 11 years, were classified according to four different classification systems (Larsen, Simmen, Wrightington and Modified Wrightington). The inter- and intraobserver reliability of each was calculated. The reliability of the Larsen and both Wrightington systems were good but the Simmen system had poor interobserver and intraobserver reproducibility. None of the classification systems satisfactorily assessed the distal radioulnar joint (DRUJ) and the Modified Wrightington system could not classify DRUJ disease in 6 of the 35 wrists.

Correspondence should be addressed to ERASS Office, Schulthess Klinik, Lengghalde 2, CH-8008 ZURICH, Switzerland.