IRCT2012102110603N1 IRCT 2012-11-07 Rheumatology Research Center of Tehran University of Medical Sciences The effects of designed educational program on health related quality of life of knee osteoarthritis patients Comparison the effects of an educational program based on stage of change theory with drug therapy on health related quality of life, pain reduction and disability improvement of patients living with knee osteoarthritis. 2012-12-21 anticipated 146 Complete https://irct.ir/trial/11075 interventional Randomization: Randomized, Blinding: Not blinded, Placebo: Not used, Assignment: Parallel, Purpose: Health service research. N/A knee osteoarthritis. Intervention 1: There is no intervention for control group. Throughout the study medications such as analgesics, NSAIDs, and antidepressant drugs will be prescribed for participants in control group as necessary. Intervention 2: The intervention in intervention group is a group–based multidisciplinary rehabilitation program which involves relevant specialists to educate for 9 hours . The different specialists would be physiotherapist ( 1 - hour theory class and 2 - hour practical class), Rheumatologist (1- hour theory class), nutritionist (1- hour theory class), psychologist (2 - hour theory class) and health education specialist (2 - hour theory class).