Comparison of Analgesic Effects of Pure Bupivacaine and Morphine Added as Bupivacaine Adjuvant in USG Guided Adductor Canal Block Following Total Knee Arthroplasty

Abstract

Objectives: Total knee arthroplasty (TKA) is an operation that causes severe postoperative pain. Adductor canal block(ACB) is separated from the other peripheral blocks as a method that can provide analgesia by sensory blockade only.The aim of this study was to compare the analgesic effect of morphine-bupivacaine with pure bupivacaine in USGguided ACB after TKA.Methods: Sixty patients aged between 40-80 years with ASA I-III physical status who were scheduled for TKA surgeryin our hospital were included in this prospective randomized study. Patients were randomly divided into two groups asGroup BM (bupivacaine+morphine) and Group B (bupivacaine) by closed envelope method, and then the groups werecompared with each other.Results: In Group BM, compared to Group B, there was a significant decrease in visual analogue scale (VAS) valuesduring rest and movement at 8th hour, 12-24 hours time zone analgesic consumption and additional analgesia usage.Conclusion: We conclude that the morphine added to bupivacaine in the adductor canal block reduces the VAS valueat 8th hour and analgesic consumption.