Clinical Effect Of Femoral Nerve Block In Rapid Rehabilitation After Total Knee Arthroplasty

Objective : Patients with total knee arthroplasty(TKA)often experience moderate to severe pain,which affects postoperative rehabilitation.Femoral nerve block(FNB)is the common way to deal with the pain after knee arthroplasty currently.In this study we aimed to investigate the value of single femoral nerve block analgesia in rapid rehabilitation after total knee arthroplasty by The retrospective study.Methods: A total of 93 patients who received TKA treatment in our hospital(Affiliated Nanhua Hospital,University of South China)from July 2017 to July 2019 were collected.A total of 60 patients were excluded after meeting the exclusion criteria.According to whether or not to received femoral nerve blockt,the patients were divided into observation group(receiving FNB)36 people and control group(not receiving FNB)24 people.Finally,a random number table was used for 20 people in each group to conduct a retrospective study.The analgesia?postoperative addition of the two groups were compared?number of analgesics?the time of fiexing knee to 90 °and the duration of hospital stay.Analysis was performed using SPSS 21.0 statistical software;measurement data used T test;count data used ?2 test.Test level: P> 0.05 means no significant difference,P <0.05 means the difference is statistically significant.Results: There was no difference in demographic data between the two groups of patients.1.Analgesia: VAS score in the observation group after operation,6h(2.15 ± 0.59)points,3 days(2.00 ± 0.86)points,5 days(1.75)± 0.79)points,significantly lower than the VAS score in the control group,6h(4.05 ± 0.83)points,3 days(3.80 ± 1.11)points,5 days(3.65 ± 1.04)points,P <0.05,the difference was statistically significant.2.Number of additional analgesics after surgery: In the U test,the number of postoperative analgesics added to the two groups(P = 0.000),P < 0.05,rejected the null hypothesis,that is,the number of postoperative analgesics added to the two groups was significantly different,and the difference was statistically significant.3.the time of fiexing knee to 90 °: the observation group knee flexion 90 ° time(8.25 ± 3.89)days,significantly lower than the control knee flexion 90 ° time(13.10 ± 3.49)days,P < 0.05,the difference is statistically significant.4.The duration of hospital stays: The duration of hospital stays in the observation group(15.25 ± 2.845)days,which is significantly lower than the duration of hospital stays in the control group(19.40 ± 4.096)days,P <0.05,the difference is statistically significant.Conclusion: Femoral nerve block can reduce postoperative pain,reduce the use of postoperative analgesics,and promote knee function recovery,which is important for rapid rehabilitation after total knee arthroplasty.