Objective: The study was done to find out the effectiveness of isometric exercises in Osteoarthritic knee joints. Methods: The study was of experimental design, with 30 subjects (both male and female), The subject diagnosed as osteoarthritis knee by orthopedician who showed a sign and symptoms requested to participate in the study were randomly selected according to the inclusion and exclusion criteria and carried out at Physiotherapy O.P.D. of CSS Hospital, Jai Physiotherapy and Dental Clinic, Ansal Town, Modipuram, Meerut, and Physiocare Clinic and Rehabilitation Centre, Meerut. On day one we have taken pre-assessment of the osteoarthritis knee patients, after that we took range of motion of the knee and evaluated the VAS and WOMAC scale respectively and then we started physiotherapy treatment i.e. hot fomentation with knee isometric exercises. The treatment comprises of 10 minutes hot fomentation followed by exercises for 15 minutes. Subjects were asked to come for physiotherapy treatment for 6 days in a week or 6 weeks. All the analysis were obtained using SPSS version 13.0 (for window 7). Demographic data of the patients including age and gender were summarized. The dependent variable for the stastatical analysis was knee ROM, pain, and WOMAC. A base line data was taken at the beginning of the study (pre test values) and after the completion of the treatment protocol reading was taken for the same parameters (post test values) to analyze the difference, independent t-test was used. A level of 0.05 was used to determine the statistical significance. Results: The results showed that there was statistically significant improvement in the ROM and Pain of the knee joint after treatment. The p- value of pre and post VAS and WOMAC was 0.05. So we found, Isometric to be the most effective treatment for knee OA.

Keywords: O.A; Isometrics; VAS and WOMAC.