Anesthesia: Essays and Researches 2018 12(4):774-777
Background: Severe acute postoperative pain after total knee arthroplasty (TKA) may cause significant morbidity to patients. Recent techniques such as peripheral nerve blocks have shown promising hope in providing appropriate pain control without systemic side effects. Adductor canal block (ACB) and multisite infiltration analgesia (MIA) are two techniques that are proven to be effective individually. Aim: This study aims to compare the efficacy of ACB versus MIA in postoperative analgesia and functional recovery after unilateral knee arthroplasty. Settings and Design: A prospective study was conducted between July 2016 and December 2016 involving 200 patients undergoing unilateral TKA. Materials and Methods: Patients were either administered MIA (Group I, n = 100 patients) or ACB (Group II, n = 100 patients). All the patients were assessed for severity of pain by visual analog scale (VAS) at 8, 24, and 48 h postoperatively and knee range of motion (ROM) at 48 h after surgery. Statistical Analysis: The Statistical Package for the Social Sciences (SPSS 19.0, SPSS Inc., Chicago, IL, USA) was used for descriptive and inferential analysis. Results: Patients who received MIA showed significantly better VAS scores 8, 24, and 48 h after surgery. Furthermore, this subset of patients showed a marginally better ROM postoperatively. However, there was no difference number of patients requiring rescue analgesia for breakthrough pain or technique-related problems between both groups. Conclusion: This study demonstrates that MIA is a safe technique that provides effective analgesia at 8, 24, and 48 h postoperatively. This leads to faster rehabilitation compared to ACB in patients undergoing TKA.
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