Treatment Of Knee Joint Pain With Radiofrequency Thermocoagulation Of Peripheral Knee Nerve And Intra-articular Pulsed Radiofrequency Long-term Efficacy Observation

Objective:To observe the postoperative pain relief,recovery of mobility,satisfaction,and adverse reactions during and after surgery for patients with knee osteoarthritis pain treated by radiofrequency thermocoagulation of peripheral knee nerves,pulsed radiofrequency in the knee joint cavity,and knee joint cavity injection.Methods:Ninety patients with knee osteoarthritis admitted to our hospital were selected.After admission,the patients were divided into three groups by random number table: perianneal nerve radiofrequency thermocoagulation group(RFT group),knee intra-articular pulsed radiofrequency group(IAPRF group)and In the knee intra-articular injection group(IAS group),30 cases will be enrolled in each group.Follow-up 1 week,1 month,3 months,6 months of pain numerical rating scale(NRS)and Oxford knee scores(OKS),global perceived effect(global perceived effect),GPE),drug dose changes and adverse reactions during and after surgery.Results:Compared with before treatment,the NRS scores of the three groups decreased significantly after treatment(P<0.05);at one week,the NRS scores of patients in the RFT group and IAS group were lower than those in the IAPRF group(P<0.05);1 month At the time point,the NRS score of patients in the RFT group was significantly lower than that of the other two groups(P<0.05);at 3 and 6 months,the NRS score of patients in the IAS group was significantly higher than that of the other two groups(P<0.05).The results within 6 months after treatment showed that the NRS scores of the patients in the RFT group and the IAPRF group remained stable,but the scores of the patients in the IAS group continued to rise after 3 months of treatment,suggesting that the maintenance time of pain relief in the IAS group was significantly shorter after treatment In the other two groups.Compared with before treatment,the OKS scores of the three groups were significantly reduced within 1 month(P<0.05).The OKS scores of patients in the IAS group and IAPRF group returned to their pre-treatment levels at 3 and 6 months,respectively.In comparison between the groups,there was a significant difference between the three groups at 1 week(P<0.05),but the OKS score in the IAS group was the lowest;the score in the IAPRF group rose significantly at 1 month,and the differences were significant compared with the other two groups(P<0.05);After 3months,the score of the RFT group was significantly lower than that of the IAPRF group and IAS group(P<0.05).The results suggest that the treatment of the IAS group and the RFT group significantly improved the knee joint function of patients in the short term,but the treatment effect of the RFT group was better than the other two groups at 3 to 6 months.One week after treatment,the dose of meloxicam in the IAS group was significantly lower than that in the RFT group and IAPRF group(P<0.05).After 3months,the dose of meloxicam in the IAS group was significantly higher than that in the RFT group and IAPRF group(P<0.05).There was no significant difference in the dosage of meloxicam between the RFT group and the IAPRF group at each time point(P>0.05).At 1 week and 1 month after treatment,the satisfaction of the three groups of patients with the treatment was similar(P>0.05).At 3 and 6 months,the GPE of the RFT group and IAPRF group were significantly higher than the injection group(P<0.05).At 6 months,the GPE of the RFT group was significantly higher than that of the IAPRF group(P<0.05).During the follow-up after treatment,there were no local infections,hematomas,knee movement dysfunction,and paresthesias around the knee joints in both groups.Conclusion:The three groups of treatment methods can significantly relieve knee joint pain and improve function;injection therapy is effective in a short period of time,but the maintenance time is short;both knee nerve radiofrequency thermocoagulation and knee joint cavity pulse radiofrequency can continue to relieve knee joint pain and improve function Radiofrequency thermocoagulation of peripheral knee nerves is superior to articular cavity pulsed radiofrequency and articular cavity injection in terms of pain relief,function improvement and patient satisfaction.