RT Journal Article SR Electronic T1 The OMERACT Ultrasound Working Group 10 Years On: Update at OMERACT 12 JF The Journal of Rheumatology JO J Rheumatol FD The Journal of Rheumatology SP 2172 OP 2176 DO 10.3899/jrheum.141462 VO 42 IS 11 A1 Bruyn, George A. A1 Naredo, Esperanza A1 Iagnocco, Annamaria A1 Balint, Peter V. A1 Backhaus, Marina A1 Gandjbakhch, Frederique A1 Gutierrez, Marwin A1 Filer, Andrew A1 Finzel, Stephanie A1 Ikeda, Kei A1 Kaeley, Gurjit S. A1 Manzoni, Silvia Magni A1 Ohrndorf, Sarah A1 Pineda, Carlos A1 Richards, Bethan A1 Roth, Johannes A1 Schmidt, Wolfgang A. A1 Terslev, Lene A1 D’Agostino, Maria Antonietta YR 2015 UL http://www.jrheum.org/content/42/11/2172.abstract AB Musculoskeletal ultrasound (US) now thrives as an established imaging modality for the investigation and management of chronic inflammatory arthritis. We summarize here results of the Outcome Measures in Rheumatology (OMERACT) US working group (WG) projects of the last 2 years. These results were reported at the OMERACT 12 meeting at the plenary session and discussed during breakout sessions. Topics included standardization of US use in rheumatic disease over the last decade and its contribution to understanding musculoskeletal diseases. This is the first update report of WG activities in validating US as an outcome measure in musculoskeletal inflammatory and degenerative diseases, including pediatric arthritis, since the OMERACT 11 meeting.