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Adductor Canal Block Methods in Bilateral Total Knee Arthroplasty
Sponsor: Yonsei University
Summary
This study aims to compare the analgesic efficacy of surgeon-performed intraoperative adductor canal block (ACB) and ultrasound-guided anesthesiologist-performed ACB in patients undergoing bilateral total knee arthroplasty (TKA). In a prospective, randomized paired design, each patient will receive surgeon-performed ACB on one knee and anesthesiologist-performed ACB on the contralateral knee. The primary outcome is postoperative pain measured using the Numeric Rating Scale (NRS), and the study is designed to evaluate the non-inferiority of surgeon-performed ACB. Secondary outcomes include opioid consumption, time to first ambulation, length of hospital stay, postoperative complications, and patient-reported outcome measures (PROMs). Additionally, postoperative ultrasound evaluation will be performed to assess the distribution pattern of local anesthetic within the adductor canal, including cross-sectional area and longitudinal spread. This study is expected to provide evidence regarding the clinical effectiveness and technical accuracy of surgeon-performed ACB in comparison with the conventional ultrasound-guided technique.
Official title: Comparison of Surgeon-Performed Intraoperative Adductor Canal Block and Ultrasound-Guided Anesthesiologist-Performed Block in Bilateral Total Knee Arthroplasty
Key Details
Gender
All
Age Range
60 Years - Any
Study Type
INTERVENTIONAL
Enrollment
48
Start Date
2026-05-01
Completion Date
2029-03-01
Last Updated
2026-04-01
Healthy Volunteers
No
Conditions
Interventions
Surgeon-Performed Adductor Canal Block
An adductor canal block performed intraoperatively by the surgeon using an anatomical landmark-based technique. The injection is administered at approximately 8 cm proximal to the distal femur, with the needle directed medially and posteriorly. A total of 20 mL of 0.3% ropivacaine mixed with epinephrine is injected using a standardized approach without ultrasound guidance.
Ultrasound-Guided Adductor Canal Block
An adductor canal block performed by an anesthesiologist under ultrasound guidance. The saphenous nerve and femoral artery within the adductor canal are identified using real-time imaging, and 20 mL of 0.3% ropivacaine mixed with epinephrine is injected using an in-plane technique.