Osteoarthritis (OA) is the most common form of arthritis and one of the leading causes of disability. This degenerative and progressive joint disease affects around 250 million people worldwide and more than 27 million people in the United States. Elderly (approximately 35% of patients over 65 years old) females, patients with obesity and African Americans are the population with the highest risk of developing OA. The study was hospital based prospective randomized controlled trail. The patients were subjected to a standardized injection protocol and are assessed on variables such as pain, stiffness and physical function using WOMAC scale, & for pain, using visual analog scale at pre injection, 6 wks post injection, 3 months & 6 months post injection. 19 (23.75%) patients (9 in PRP group & 10 in steroid group) were between 41-50 years, 23 (28.75%) patients (15in PRP group & 8 in steroid group) were between 51-60 years, 38(47.5%) patients (16 in PRP in group & 22 in steroid group) were more than 60 years. [ABSTRACT FROM AUTHOR]