Comparison of application effects of continuous femoral nerve block analgesia and patient-controlled intravenous analgesia in patients after total knee arthroplasty
Objective:To compare application effects of continuous femoral nerve block analgesia and patient-controlled intravenous analgesia in patients after total knee arthroplasty.Methods:A prospective study was conducted on 65 patients with total knee arthroplasty admitted to the hospital from December 2018 to March 2023.According to the random number table method,they were divided into study group(33 cases)and control group(32 cases).The control group was treated with intravenous controlled analgesia after the surgery,while the study group was treated with continuous femoral nerve block analgesia after the surgery.The visual analogue scale(VAS)score,the maximum flexion of knee joint,and the incidence of postoperative delirium were compared between the two groups.Results:12,24 and 48 h after the surgery,the VAS scores in the study group were lower than those in the control group,and the differences were statistically significant(P<0.05).1,3 and 7 days after the surgery,the maximum flexion levels of active and passive knee joints in the study group were greater than those in the control group,and the differences were statistically significant(P<0.05).Further,7 days after the surgery,the incidence of delirium in the study group was 3.03%,which was significantly lower than 25.00%in the control group,the difference was statistically significant(P<0.05).Conclusions:Continuous femoral nerve block analgesia for the patients after total knee arthroplasty can increase the maximum flexion of the knee joint,reduce the pain VAS scores and the incidence of delirium.Moreover,it is superior to patient-controlled intravenous analgesia.