REPORT

Assessment: domains and instruments

Psoriatic arthritis imaging: a review of scoring methods

D van der Heijde¹, J Sharp², S Wassenberg³, D D Gladman⁴

¹ Department of Rheumatology, University Hospital Maastricht, and Caphri Research Institute, University Maastricht, Maastricht, the Netherlands
² University of Washington School of Medicine, Seattle, WA, USA
³ Fachkrankenhaus Ratingen, Ratingen, Germany
⁴ University of Toronto; Toronto Western Research Institute; Psoriatic Arthritis Program, University Health Network; Centre for Prognosis Studies in the Rheumatic Diseases, Toronto Western Hospital, Toronto, Ontario, Canada

Correspondence to:
Correspondence to:
D van der Heijde
Department of Rheumatology, University Hospital Maastricht, PO Box 5800, 6202 AZ Maastricht, the Netherlands; dhe{at}sint.azm.nl

Structural damage assessed on conventional radiographs is an important outcome measure in psoriatic arthritis. This article reviews the available scoring methods. A full description of the methods is given as well as information on various aspects of validity.

Abbreviations: DIP, distal interphalangeal (joint); DS, destruction score; ICC, intraclass correlation; IP, interphalangeal (joint); MCP, metacarpophalangeal (joint); MTP, metatarsophalangeal (joint); OMERACT, Outcome Measures in Rheumatology; PIP, proximal interphalangeal (joint); PS, proliferation score; PsA, psoriatic arthritis; RA, rheumatoid arthritis; TNF, tumour necrosis factor, TS, total score

Keywords: psoriatic arthritis; outcome; structural damage; radiographs; scoring methods

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