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Arthritis of the large joints, in particular the knee, at first presentation is predictive for a high level of radiological destruction of the small joints in rheumatoid arthritis
  1. S P Linn-Rasker (s.p.linn{at}meandermc.nl)
  1. Leiden University Medical Center, Netherlands
    1. A HM Van der Helm - van Mil (avdhelm{at}lumc.nl)
    1. Leiden University Medical Center, Netherlands
      1. F C Breedveld (f.c.breedveld{at}lumc.nl)
      1. Leiden University Medical Center, Netherlands
        1. T WJ Huizinga (t.w.j.huizinga{at}lumc.nl)
        1. Leiden University Medical Center, Netherlands

          Abstract

          Objective: To investigate the predictive value of the distribution of inflamed joints at first presentation for the severity of the disease course in RA.

          Methods: From 1009 consecutive patients included in the Leiden Early Arthritis Clinic, 285 patients fulfilled the ACR-criteria for RA within 1-year of follow-up. Of these, 28 patients achieved remission. Radiographs of hands and feet were scored according to the Sharp-van der Heijde method and the 28 patients with the most destructive disease were selected. The distribution of inflamed joints of the patients with the extreme disease courses was compared. The association between the distribution of inflamed joints and the level of destruction of the joints of hands and feet in the whole group of RA-patients was assessed using regression analysis.

          Results: Comparison of the patients with extreme disease courses using univariate and logistic regression analyses revealed that arthritis of the large joints, in particular the knee, was associated with severe RA. In the whole group of RA-patients, the total number of swollen joints and the presence of knee arthritis associated independently with the level of destruction of the small joints. RA-patients with knee arthritis had higher C-reactive protein levels than patients without knee arthritis and investigating the distribution of inflamed joints together with other variables yielded the number of swollen joints, C-reactive protein level, presence of anti-CCP antibodies and symptom duration as predictors for RA severity.

          Conclusion: Arthritis of large joints, in particular the knee, at first presentation is associated with a destructive course of RA.

          • disease course
          • distribution inflamed joints
          • prediction
          • rheumatoid arthritis

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