Daily Re-Dosed ACB Matches Continuous Infusion for Early Pain Control After TKA

Background: Total knee arthroplasty (TKA) is known to produce substantial postoperative pain that can delay mobilization and rehabilitation if not adequately controlled. The adductor canal block (ACB) has become a central component of multimodal analgesia, because it provides effective sensory analgesia, while largely preserving quadriceps strength. Continuous ACBs are commonly used to prolong analgesia, yet their effectiveness may be compromised by frequent catheter dislodgment during postoperative movement. An alternative strategy is repeated single-injection blocks, which may ensure more reliable delivery of local anesthetic into the adductor canal over successive postoperative days. Objective: To compare whether repeated daily ACB injections through postoperative day 2 provide superior analgesia compared with a continuous ACB in patients undergoing TKA. Design: Single-center, open-label, randomized clinical trial. Participants: Adults aged 19 to 75 years with American Society of more...