Choudhary, S. and Ghoti, S. 2022. Study of clinical outcome of single intra-articular injection of artificial hyaluronic acid preparation in patients with grade III and grade IV knee osteoarthritis. International Journal of Research in Orthopaedics. 8, 3 (Apr. 2022), 339–344. DOI:https://doi.org/10.18203/issn.2455-4510.IntJResOrthop20221122.