A Randomized Controlled Trial to compare the conventional and revised anatomical landmarks for ultrasound guided cooled radiofrequency ablation of genicular nerves in patients with chronic knee osteoarthritis

Knee osteoarthritis is one of the most common degenerative conditions in the elderly age group. The definitive treatment is knee replacement surgery, but most of the patients will not be fit for surgery. Minimally invasive procedures like radiofrequency ablation of genicular nerves around the knee joint is a successful alternative for surgery. Cooled Radiofrequency ablation is a new modality that effectively ablates the genicular nerves. Previously it was done under fluoroscopy guidance but ultrasound guidance has better advantages of being radiation free and accurate capturing of nerves. Previous landmarks that have been used for ultrasound guided ablation did not cover the entire nerves, thus providing less pain relief. Recently developed revised anatomical landmarks effectively block the genicular nerves and provide better pain relief than conventional technique.