Subjects: 30 subjects with diagnosed cases of OA Knee above 38 years. Both males and females were included.

Method: Out of 30 participants 15 were in group A which received Manual physical therapy and 15 in group B which received Manual physical therapy along with perturbation exercises. The intervention protocol was carried for 3 weeks – 3 days per week. Initially step up test was recorded for balance evaluation. KOOS was taken as outcome measure. After the intervention again step up test was evaluated for Balance evaluation.

Result: When manual physical therapy and manual physical therapy along with perturbation exercises were compared, manual physical therapy along with perturbation exercises showed greater improvement on all the outcome measures. For manual physical therapy along with perturbation exercises improved from–Pain 29.38+-9.03 to 33.45+-8.98, Symptoms 34.35+-9.06 to 38.34+-9.11, ADLs 28.25+-8.79 to 32.17+-8.74, Sports and recreation function 12.09+-7.57 to 17.20+-6.76,Knee related QOL 27.48+-8.90 to 31.82+-8.88.Perturbation exercises also showed significant improvement in balance on step up test which improved from 6.67+-3.81 to 10.27+-3.28.

Conclusion: Addition of Perturbation exercises to Manual Physical Therapy shows greater improvement in OA Knee patients. Perturbation Exercises do improve balance in patients with OA Knee.