Article Text
Abstract
Objective The aim of this study was to assess the predictive value of tenderness in the absence of swelling with consideration of other potential risk factors for subsequent radiographic progression in rheumatoid arthritis (RA) and psoriatic arthritis (PsA).
Methods Clinical and sonographic (grey scale and power Doppler (PD)) examination of 22 joints of the hand were performed in patients with RA and PsA. The impact of tenderness on progression after 2 years was analysed in non-swollen joints for RA and PsA separately with multilevel mixed logistic regression analysis.
Results We included 1207 joints in 55 patients with RA and 352 joints in 18 patients with PsA. In RA, tenderness was associated with radiographic progression after 2 years (model 2: OR 1.85 (95% CI 1.01 to 3.27), p=0.047), although the association of PD (OR 2.92 (95% CI 1.71 to 5.00), p<0.001) and erosions (OR 4.74 (95% CI 2.44 to 9.23), p<0.001) with subsequent structural damage was stronger. In PsA, we found a positive but not significant association between tenderness and radiographic progression (OR 1.72 (95% CI 0.71 to 4.17), p=0.23). In contrast, similarly to RA, erosions (OR 4.62 (95% CI 1.29 to 16.54), p=0.019) and PD (OR 3.30 (95% CI 1.13 to 9.53), p=0.029) had a marked effect on subsequent structural damage.
Conclusion Our findings imply that tenderness in non-swollen joints in RA is associated with subsequent damage. In both diseases, additional risk factors, such as sonographic signs for synovitis and baseline radiographic damage are associated with radiographic progression.
- Arthritis, Psoriatic
- Arthritis, Rheumatoid
- Ultrasonography
Data availability statement
Data are available upon reasonable request. De-identified, coded data will be made available from the corresponding author upon reasonable request.
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Data availability statement
Data are available upon reasonable request. De-identified, coded data will be made available from the corresponding author upon reasonable request.
Footnotes
Handling editor Kimme L Hyrich
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Contributors IG: Substantial contributions to the conception or design of the work, or the acquisition, analysis or interpretation of data. Drafting the work or revising it critically for important intellectual content. CH: Substantial contributions to the analysis or interpretation of data. Drafting the work or revising it critically for important intellectual content. TD: Substantial contributions to the conception or design of the work, or the acquisition, analysis or interpretation of data. Drafting the work or revising it critically for important intellectual content. MD: Substantial contributions to the conception or design of the work, or the acquisition, analysis or interpretation of data. MH: Drafting the work or revising it critically for important intellectual content. VK: Substantial contributions to the conception or design of the work, or the acquisition, analysis or interpretation of data. MP: Substantial contributions to the conception or design of the work, or the acquisition, analysis or interpretation of data. PS: Drafting the work or revising it critically for important intellectual content. GS: Substantial contributions to the conception or design of the work, or the acquisition, analysis or interpretation of data. MZ: Substantial contributions to the conception or design of the work, or the acquisition, analysis or interpretation of data. JSS: Drafting the work or revising it critically for important intellectual content. DA: Drafting the work or revising it critically for important intellectual content. PM: Drafting the work or revising it critically for important intellectual content and final approval of the version published. PM is guarantor for the study.
Funding The authors have not declared a specific grant for this research from any funding agency in the public, commercial or not-for-profit sectors.
Competing interests JSS is Editorial Board Member (Editor-in-Chief), the other authors have no competing interests to declare.
Patient and public involvement Patients and/or the public were not involved in the design, or conduct, or reporting, or dissemination plans of this research.
Provenance and peer review Not commissioned; externally peer reviewed.
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