Postoperative Analgesia And Function Recovery For TKA: Comparion Of A CFNB And CPCB

Objectives: The goal of this study is to evaluate whether continouspsoas compartment block is better than continous femoral nerve blockin postoperative analgesia and postoperative rehabilitation.Methods: Eighty selective patients scheduled for total kneearthroplasty were ramdomly divided into two groups. Group CFNBPatients (n=40) received intravenous 10μg/ml fentanyl by PCA witha bolus dose of 2ml fentanyl, and a lockout interval of 5min plus acontinuous FNB with 30ml bolus doses of ropivacaine 0.5％, followedby an infusion of ropivacaine 0.25％at 5ml/h for 48h, or PCAplus CPCB(n=40) with the same bolus and infusion regimen asthe CFNB group Evidence of sensory and motor blockades afterperipheral nerve blockade, postoperative visual analogue scores (VAS)at resting and rehabilitation during the first postoperative 48h, totalamount of intravenous fentanyl consumption, Bromage scales, sedationand satisfaction degree of the patients with the analgesic efficacy, theincidence of complications,and short-term or long-term functionalrehabilitation were recorded.Results: Sensory blockade of lateral femoral cutaneousnerve,sensory and motor blockades of the obturator nerve wereachieved more often in the CPCB group than in the CFNBgroup(P＜0.01).VAS, Bromage scale, the total amount of intravenousfentanyl consumption during the first postoperative 48h did notdiffer. The incidence of PONV was comparable in two groups, but CPCBgroup reached a higher satisfaction to analgesia than CFNB group.short-term or long-term functional outcome was not different betweenthe two groups.Conclusions:Both CPCB and CFNB were not different between thetwo regional techniques after total knee arthroplasty, but CPCBgroup had the higher satisfaction to analgesia than CFNB group.