Objective: To compare ultrasound-guided suprainguinal fascia iliaca compartment block (SFICB) with periarticular local infiltration analgesia (PLIA) on pain and functional recovery in patients undergoingtotal hip arthroplasty(THA).Methods: Sixty patients, 37 males and 23 females, aged 40 years to 75 years, American Society of Anesthesiology(ASA) physical status Ⅰ or Ⅱ, scheduled for elective THA were randomized to SFICB group or PLIA group, with 30 cases in each group. The local anesthetic solution for both the groups included 40 ml 0.25% ropivacaine 100 mg and epinephrine 100 μg. Postoperative pain visual analog scale(VAS) scores at rest and on movement were measured at postanesthesia care unit(PACU),2 h,6 h,12 h,24 h,48 h postoperatively. Analgesics demand at PACU, effective PCA pressing times at 24 h and 48 h, numbers of patients who required rescue analgesia and postoperative nausea and vomitmg(PONV) incidence were recorded. Timed-up-and-go (TUG) test at postoperative 24 h and 48 h, incidence of sensory changes and quadriceps muscle weakness, time to ambulation and time to discharge readiness were also compared.Results: The pain scores at rest and on movement were similar at all recorded time points(P>0.05). There were no differences between the groups with respect to analgesics demand at PACU, number of PCA pressing at postoperative 0-24 h and 24-48 h, need for rescue analgesia and incidence of PONV(P>0.05). Compored with the PLIA group, TUG time of SFICB group at 24 h was significantly longer, and significantly more patients in the SFICB group experienced sensory changes and quadriceps muscle weakness at 24 h after surgery (P<0.05). There were no significant differences in TUG time at 48 h, time to ambulation and time to discharge readiness(P>0.05).Conclusion: In patients undergoing THA, both SFICB and PLIA provides the similar pain relief, but LIA is associated with less sensory changes and muscle weakness postoperatively.
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