TY - JOUR T1 - Developing a Preliminary Definition and Domains of Flare in Knee and Hip Osteoarthritis (OA): Consensus Building of the Flare-in-OA OMERACT Group JF - The Journal of Rheumatology JO - J Rheumatol DO - 10.3899/jrheum.181085 SP - jrheum.181085 AU - Francis Guillemin AU - Camille Ricatte AU - Annica Barcenilla-Wong AU - Amandine Schoumacker AU - Marita Cross AU - Camille Alleyrat AU - Thomas Buttel AU - Michel Cembalo AU - Hakima Manseur AU - Hema Urban AU - Bruno Fautrel AU - Philip G. Conaghan AU - Gillian Hawker AU - Claudia Rutherford AU - Lyn March AU - Elisabeth Spitz AU - David J. Hunter Y1 - 2019/05/15 UR - http://www.jrheum.org/content/early/2019/05/13/jrheum.181085.abstract N2 - Flare in knee and hip osteoarthritis (OA) is more than just an exacerbation of pain. Unstructured, semistructured, and focus group interviews followed by Delphi surveys with patients and health professionals (HP) generated candidate domains of an OA flare. Content analysis of interviews with 29 patients and 16 HP extracted 180 statements, which were grouped into 9 clusters. Delphi consensus with 50 patients (Australia, Canada, and France) and 116 HP (17 countries on 4 continents) identified 5 flare domains: pain, swelling, stiffness, psychological aspects, and effect of symptoms. Elements for a preliminary definition of an OA flare are proposed. Registered at clinicaltrials.gov NCT02892058. ER -