title: The definition and measurement of disease modification in inflammatory rheumatic diseases.
abstract: This article focuses on measures that are used to evaluate disease activity, damage, and function in three major inflammatory musculoskeletal disorders. The instruments used in rheumatoid arthritis, where most of the methodologic work has been done, are extensively discussed and instruments for the respective domains in psoriatic arthritis and ankylosing spondylitis are likewise presented.
authors.affiliation: Department of Rheumatology, Internal Medicine III, Medical University of Vienna, Vienna, Austria. daniel.aletaha@meduniwien.ac.at
authors.forename: Daniel
authors.initials: D
authors.lastname: Aletaha
authors.forename: Josef S
authors.initials: JS
authors.lastname: Smolen
mesh_terms: D015535:Arthritis, Psoriatic / Q000473:pathology* / Q000503:physiopathology* / Q000628:therapy; D001172:Arthritis, Rheumatoid / Q000473:pathology* / Q000503:physiopathology* / Q000628:therapy; D006801:Humans; D010147:Pain Measurement; D016059:Range of Motion, Articular / Q000502:physiology; D020127:Recovery of Function / Q000502:physiology; D016896:Treatment Outcome