Aim: To find out the effectiveness of Pilates vs Otago exercise program on functional improvement in patients with osteoarthritis of knee joint. Material and Method: This experimental study had 60 participants including both male and female with age group of 50 to 60 yrs of age, having bilateral knee pain and preobese patients were included. Whereas traumatic injury, vascular injury, neurological conditions were excluded. Material required were chair, mat and weight cuffs. Result: Data analysis was done using paired t test and unpaired t test. The present study showed significant effect of Pilates exercise program on comparison with Otago exercise program on functional improvement in patients with osteoarthritis of knee joint using WOMAC scale. Conclusion: The Study concluded that Pilate’s exercise is more effective than Otago exercises on functional improvement in osteoarthritis of knee patients. On the basis of statistical analysis we conclude that single intervention of self myofascial release is effective in improving score of sit and reach test as flexibility of outcome measure. So, we conclude that self myofascial release might be effective treatment to reduce tightness of hamstring muscle in badminton players and improve their performance.