IRCT20221206056722N1 IRCT 2022-12-12 Shiraz University of Medical Sciences Investigating the effect of educational intervention based on the theory of planned behavior on increasing preventive behaviors of knee osteoarthritis complications in the elderly The effect of educational intervention based on the theory of planned behavior on the increase of preventive behaviors of knee osteoarthritis in the elderly. 2022-12-26 anticipated 100 Complete https://irct.ir/trial/67223 interventional Randomization: N/A, Blinding: Not blinded, Placebo: Not used, Assignment: Single, Purpose: Health service research. N/A KNEE OSTEOARTHRITIS. Intervention group: This clinical trial has an intervention group, 100 elderly people with osteoarthritis of the knee who were selected by random cluster sampling method. In the first round, after collecting and analyzing the data, with the cooperation of education specialists Health, Rheumatology and Physiotherapy educational program (2 workshops for 12 hours) will be designed and implemented to improve behavior. Educational program using lectures and questions and answers (two sessions of 45 minutes), educational film (two sessions of 20 minutes), practical demonstration (40 minutes), group discussion (two sessions of 30 minutes) and educational aids including pamphlets in 2 sessions of the educational workshop. It will be provided by rheumatology and physiotherapy specialists, who will be evaluated after three months of educational intervention. Undecided - It is not yet known if there will be a plan to make this available Justification or reason for indecision in sharing IPD is After finishing the work and compiling the article, I will decide to publish the content.