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Clinical and epidemiological research
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Changes in the rates of joint surgery among patients with rheumatoid arthritis in California, 1983–2007
  1. Grant H Louie,
  2. Michael M Ward
  1. Intramural Research Program, National Institute of Arthritis and Musculoskeletal and Skin Diseases, National Institutes of Health, US Department of Health and Human Services, Bethesda, Maryland, USA
  1. Correspondence to Dr Grant H Louie, NIH/NIAMS/IRP, Building 10 CRC Room 4-1339, 10 Center Drive, MSC 1468, Bethesda, MD 20892-1468, USA; grant.louie{at}nih.gov

Abstract

Background Treatment of patients with rheumatoid arthritis (RA) has improved markedly over the past 25 years.

Objective To investigate whether rates of joint surgery, a long-term consequence of poorly controlled RA, have changed over this period.

Methods In this population-based, serial cross-sectional study of patients with RA aged ≥40 years in California, trends in annual rates of total knee arthroplasty, total hip arthroplasty, total ankle arthroplasty or arthrodesis and total wrist arthroplasty or arthrodesis from 1983 to 2007 were examined.

Results Rates of joint surgery peaked in the 1990s and since have decreased. Among patients aged 40–59 years, rates of knee surgery in 2003–2007 were 19% lower than in 1983–1987 (adjusted rate ratio 0.81; 95% CI 0.74 to 0.87, p<0.0001), while rates of hip surgery in 2003–2007 were 40% lower (p<0.0001). Rates of knee and hip surgery did not decrease in patients aged ≥60 years but increased as observed in the general population. Compared with rates of ankle and wrist surgery in the mid-1980s, rates in the mid-2000s decreased signifi cantly in both age groups.

Conclusions Rates of joint surgery in RA peaked in the 1990s and have declined thereafter, suggesting that longterm outcomes of RA are improving.

https://doi.org/10.1136/ard.2009.112474

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    Footnotes

    • Funding This work was supported by the Intramural Research Program, National Institute of Arthritis and Musculoskeletal and Skin Diseases, National Institutes of Health.

    • Competing interests None.

    • Ethics approval The study was exempted from human subjects review by the National Institutes of Health Offi ce of Human Subjects Research.

    • Provenance and peer review Not commissioned; externally peer reviewed.