Background: Osteoarthritis is a well known disease of joint, mostly effecting knee and compromised knee functioning leading g to decreased Quality of life. This is due to loss articular cartilage and disorder to destruction of joint surfaces .Rate among females is higher than males. Objective: The study was focused to use the lateral wedge on pain and quality of knee functioning so that biomechanics of joint should be changed and evaluated. Methodology: This was randomized study continued after ethical approval from Azra Naheed Medical College Ethical Committee .The subjects include were in age range of more than 45 ,both male and females ,radiological diagnosed with Osteoarthritis grade and II.The sample was 40 subjects with 20 in each group .The experimental group received lateral wedge with routine treatment and control group received only routine Physical therapy treatment .The outcome tool used was KOOS knee survey and VAS for pain evaluation. The data was collected at baseline and every second week. Statistical software used was SPSS 25.version.The data was analyzed with use of repeated measurement ANOVA and independent t test for pre mid and post value comparison. The significance was taken at P <0.O5. Results: The study’s results by using KOOS knee survey and pain evaluation scale that there was much improvement in experimental using lateral wedge group rather than control group having routine physical therapy The p value<0.05 indicating forkneesymptoms[P<0.00]knee function[P< 0.00] pain and sports /recreational activities[P<0.00] Conclusion: The study concluded that knee function can be improved conservatively with common techniques using routine intervention but the lateral wedge can be effective more than use of routine physical therapy managements. Key words: Quality of function, Knee Osteoarthritis,Pain , Lateral Wedge/ insoles