Inclusion Criteria:  ACR criteria for knee will be over age 50 less than 30 minutes of morning stiffness, Crepitus on active motion, Tenderness Enlargement No palpable warmth of synovium. Osteoarthritis grade 1 and 2 by Kelly-green and Lawrence method.  Exclusion Criteria:  Any surgical procedure done in past 6 months and metal implants in lower extremity. Any infection and neoplastic disorder. Post traumatic knee stiffness. Secondary knee O A peripheral vascular disease