Prospective, Double-Blind, Randomized Study to Evaluate Single-Injection Adductor Canal Nerve Block Versus Femoral Nerve Block: Postoperative Functional Outcomes After Total Knee Arthroplasty.

Background And Objectives: Despite multiple clinical trials comparing the adductor canal block (ACB) with femoral nerve block (FNB) for total knee arthroplasty, none looked at the aforementioned nerve blocks from early functional results to up to 6 months after surgery.

Methods: For this prospective, double-blind, randomized, single-center trial, we enrolled 98 patients set to undergo total knee arthroplasty. The patients were randomized, with 93 patients included in the intention-to-treat analysis.