3-point vs 6-point GNRFA for Chronic KOA

The goal of this clinical trial is to compare three-point and six-point Genicular Nerve Radiofrequency Ablation (GNRFA) in adults with chronic knee osteoarthritis (KOA). The main question it aims to answer is whether six- target GNRFA technique is more efficacious than standard three-target GNRFA technique in managing the pain and function of KOA. Consented patients who respond to a diagnostic block will be randomly assigned to either three-point or six-point GNRFA. Researchers will compare pain and function in these two groups.