Is Cooled Radiofrequency Ablation the Hot New Treatment for Knee Osteoarthritis?: Commentary on an article by Antonia F. Chen, MD, MBA, et al.: "Cooled Radiofrequency Ablation Compared with a Single Injection of Hyaluronic Acid for Chronic Knee Pain. A Multicenter, Randomized Clinical Trial Demonstrating Greater Efficacy and Equivalent Safety for Cooled Radiofrequency Ablation".