Purpose: was to assess functional performance in adolescents with a history of Osgood-Schlatter disease using a developed rating scale before and after application of a comprehensive therapeutic program.Methods: Fifty individuals diagnosed with a history of OSD participated in this study. The study sample randomly into two groups of equal number (A and B). Group (A) received shock wave therapy in addition two conventional physical therapy. Group B received the same conventional physical therapy conducted to the group (A). Sessions executed three times a week for two months.Results: In the present study, both groups demonstrated significant improvement of the measured subscales over an eight week periods; however experimental group demonstrated better improvement in score of "physical examination" than the control group; while other variables improved with the same level. Conclusion:The suggested physiotherapy protocol improved function in subjects with history of OSD and provided a rational for the clinical use of shock wave therapy.