Enhanced recovery after surgery Comparison of efficacy of radiofrequency alone or steroid or ozone intra-articular after radiofrequency ablation of genicular nerves in patients with chronic pain due to knee osteoarthritis: A prospective, randomized, controlled clinical trial Comparison of efficacy of radiofrequency alone or steroid or ozone intra-articular after radiofrequency ablation of genicular nerves in patients with chronic pain due to knee osteoarthritis: A prospective, randomized, controlled clinical trial S.I.Saad, M.A.Elrabiey,H.M.Elazzazi,E.A.Shaboob,Z.M.Elbagoury