Comparison of postoperative analgesia with two different doses of dexmedetomidine as an adjuvant to ropivacaine in adductor canal block for unilateral total knee replacement surgery: A randomized double-blinded study.

Multimodal analgesia is used to treat severe postoperative pain (POP) in total knee replacement (TKR) surgery. Adjuvants are used with local anesthetics to improve the quality and duration of pain relief. Studies comparing different doses of dexmedetomidine in adductor canal block (ACB) are sparse to date. This study compares postoperative analgesia with two different doses of dexmedetomidine as an adjuvant to 0.2% ropivacaine in ACB for unilateral TKR.