FNB in ACL Recon Under GA

Inclusion Criteria: * individuals who are scheduled to undergo arthroscopic anterior cruciate ligament reconstruction surgery and must be received sufficient explanation about the research prior to surgery and have provided their informed consent to participate. Exclusion Criteria: * who require simultaneous surgery for concomitant cartilage injury, medial meniscus tear, and lateral collateral ligament tear. * who have previously undergone surgical treatment within the knee joint. * who have declined to participate in the research. * where medical, surgical, or anesthetic complications occurred during surgery. * other cases deemed necessary by the researchers.