Chronic knee osteoarthritis is one of the most common diseases in the elderly. It is often accompanied by pain, limited mobility, sleep disturbances and psychosomatic disorders. Conservative treatment mainly includes medications (NSAIDS), intra-articular injections of corticosteroids or hyaluronates, acupuncture and acupuncture, which often fail to provide lasting pain relief; surgical treatment is often limited to the functional status of the patient’s organs. Our department uses radiofrequency treatment of the knee nerve to cut off the nociceptive nerve of the joint, which successfully relieves the joint pain and restores the function of the joint. Theory and treatment steps: The knee joint is innervated by the articular branches of the femoral, common peroneal, saphenous, tibial and obturator nerves. These articular branches that surround the knee are called the articular nerves, and ultrasound-guided percutaneous puncture can be performed very easily with radiofrequency destruction of the nerves. In the step, after local anesthesia with 1% lidocaine, a 10-cm-long 22-gauge radiofrequency was directed at the periprosthetic sensory nerves (3 knee branches of the sciatic nerve)) for radiofrequency treatment (sensory stimulation and motor stimulation were used before radiofrequency heating to verify that the puncture needle reached the target nerve, with radiofrequency parameters of 70°C for 90 s), with one radiofrequency session per knee nerve.