About the Osteoarthritis Working Group The OMERACT Osteoarthritis Working Group is Jasvinder A SinghCo-Chair Vibeke StrandCo-Chair Peter TugwellCo-Chair Working Group Publications Expand The Syndrome of Osteoarthritis Osteoarthritis Clinical Trials: Candidate Variables and Clinimetic Properties Defining the Role of Molecular Markers to Monitor Disease, Intervention, and Cartilage Breakdown in Osteoarthritis Radiographic Assessment in Osteoarthritis Design and Conduct of Clinical Trias in Osteoarthritis: Preliminary Recommendations from a Task Force of the Osteoarthritis Research Society Inverse Relationship of Interface Between Osteoporosis and Osteoarthritis Recommendations for a Core Set of Outcome Measures for Future Phase III Clinical Trials in Knee, Hip, and Hand OA. Consensus Development at OMERACT III Towards a Definition of Difference in Osteoarthritis Outcome Variables for OA Clinical Trials: The OMERACT-OARSI Set of Responder Criteria