IJSR International Journal of Scientific Research 2277 - 8179 Indian Society for Health and Advanced Research ijsr-11-2-40697 Original Research Paper Effectiveness of intra articular ozone therapy on quality of life and knee function compared with intra articular steroid in patients with primary osteoarthritis of knee: a randomized controlled trial Meethal Shanavas Dr. Yengkhom Jotin Dr. February 2022 11 2 01 02