fa عمومى General پژوهشي Research <span style="font-size:12pt"><span style="line-height:normal"><span style="font-family:Calibri,sans-serif"><b><span style="font-size:9.0pt"><span cambria="" style="font-family:">Introduction:</span></span></b><span style="font-size:9.0pt"><span cambria="" style="font-family:"> Osteoarthritis is a non-inflammatory joint disease that causes pain and disability, impaired mobility, function, and balance. Nurses should use a systematic and coherent model to care for these patients. Nurses can provide necessary services to chronic patients using the theories that form the basis of nursing science. The aim of this study is to apply a care program based on Johnson&#39;s behavioral system model in a patient with osteoarthritis.</span></span></span></span></span><br> <span style="font-size:12pt"><span style="line-height:normal"><span style="font-family:Calibri,sans-serif"><b><span style="font-size:9.0pt"><span cambria="" style="font-family:">Case Presentation:</span></span></b><span style="font-size:9.0pt"><span cambria="" style="font-family:"> The research method used in this study is a case study. In this study, the research population was all patients with osteoarthritis who referred to educational and treatment centers in Hamadan province in 2024. One client with osteoarthritis was selected through purposive sampling based on the inclusion criteria. The client was examined using the Johnson Behavioral System Model survey form. The data collection method was observation and interview. After the examination, the patient&#39;s unstable behaviors in the subsystems were identified, and with the nursing measures of the Johnson model, the nurse took care of the patient and then evaluated him.</span></span><span dir="RTL" lang="AR-SA" style="font-size:9.0pt"><span style="font-family:"Times New Roman",serif"></span></span></span></span></span><br> <span style="font-size:12pt"><span style="line-height:normal"><span style="font-family:Calibri,sans-serif"><span style="font-size:9.0pt"><span cambria="" style="font-family:">The results of our study showed that the client had unstable behavior in the subsystems of achievement, aggression and protection, avoidance, absorption, sexuality, and reserve. After 2 months of implementing nursing measures based on Johnson&#39;s behavioral system model, we witnessed the elimination or reduction of the patient&#39;s unstable behaviors.</span></span></span></span></span><br> <span style="font-size:12pt"><span style="line-height:normal"><span style="font-family:Calibri,sans-serif"><span style="font-size:9.0pt"><span cambria="" style="font-family:">&nbsp;<b>Discussion and Conclusion:</b> Based on the results of this study, it can be concluded that in patients with osteoarthritis, we can eliminate and reduce the patient&#39;s unstable behaviors with the help of Johnson&#39;s behavioral system model. Since the goal of Johnson&#39;s behavioral system model is to create a balance between the patient and the environment by the nurse in order to bring the patient to the desired level of performance and improve the patient&#39;s quality of life, it can be hoped that nurses will achieve improved standards of care and increased patient satisfaction and quality of life by using this model.</span></span></span></span></span><br> <br> &nbsp; Osteoarthritis,Johnson's behavioral systems model,Nursing process 1 5 http://intjmi.com/browse.php?a_code=A-10-1-688&slc_lang=fa&sid=1 Saba karimi 10031947532846008302 10031947532846008302 No PhD Student in Nursing, Student Research Center, School of Nursing and Midwifery, Hamadan University of Medical Science, Hamadan, Iran. Fatemeh Cheraghi 10031947532846008303 10031947532846008303 No PhD, Professor ; Chronic Diseases (Home Care) Research Center, Cancer Research Institute and,School of Nursing and Midwifery, Hamadan University of Medical Sciences, Hamadan, Iran. Amirhossein Tondro 10031947532846008304 10031947532846008304 No PhD Student in Nursing, Student Research Center, School of Nursing and Midwifery, Student Research Committee, Kermanshah University of Medical Science, Kermanshah, Iran. Seyed Reza Borzou 10031947532846008305 10031947532846008305 No PhD, Professor ; Chronic Diseases (Home Care) Research Center, and School of Nursing and Midwifery, Hamadan University of Medical Sciences, Hamadan, Iran. Khodayar Oshvandi 10031947532846008306 10031947532846008306 Yes PhD, Professor, Mother and Child Research Center, Faculty of Nursing and Midwifery, Hamadan University of Medicine, Hamadan, Iran