Abstract:Objective:This retrospective study compared the clinical efficacy and safety of knee nerve multi-mode radiofrequency vs knee joint injection in the treatment of refractory knee osteoarthritis(KOA). Methods: 66 patients with refractory KOA who received treatment at the Pain Depatmrent of China-Japan Friendship Hospital from February 2020 to March 2021 were dividided into the surgery group(n=35) and the injection group(n=31). The patients' numerical rating scale (NRS) score, the Western Ontario and McMaster Universities Osteoarthritis Index(WOMAC) score, the proportion of nonsteroidal antiinflammatory drugs (NSAIDs) and/or opioid drugs used, surgical related complications and patient satisfaction,before surgery, at the second week,the first month,the third month,the 6th month and the 12th month after surgery, were respectively followed up and statistically analyzed. Result: Compared with pre-operation, the surgical group had better efficacy than the injection group. The NRS score and WOMAC score, as well as the postoperative drug use rate, decreased significantly at the second week,the first month,the third month,the 6th month and the 12th month after surgery,with statistical significance. No serious adverse reactions such as lower limb numbness, lower limb weakness, hypoesthesia, paresthesia, and neuralgia were observed after surgery. At the 12th month after surgery, 82.9% of the patients were satisfied with the postoperative results. Conclusion: The combination of knee nerve radiofrequency and low-temperature plasma radiofrequency ablation can effectively alleviate knee joint pain, improve joint function, and have no serious adverse reactions,which can be used as an alternative treatment mode for refractory KOA other than total knee arthroplasty.