An interventional study of Surgeon-Performed Adductor Canal Block and Ultrasound-Guided Adductor Canal Block in Knee Osteoarthritis, Total Knee Arthroplasty and Postoperative Pain, sponsored by Yonsei University. Not yet recruiting. Open to participants aged 60 Years and older. Per ClinicalTrials.gov, last updated 2026-04-01.
Sponsored by Yonsei University · Not applicable, Interventional, and Treatment
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.
3,302 studies on the registry are indexed under Osteoarthritis, Knee; 608 are open to participants now.
This study's planned enrollment of 48 is below the median of 70 across 2,731 interventional studies indexed under Osteoarthritis, Knee.
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Exclusion Criteria:
Adductor canal block performed intraoperatively by the surgeon using an anatomical landmark-based technique. The injection is administered during surgery without ultrasound guidance using a standardized approach and the same type and volume of local anesthetic as the comparator.
Biological: Surgeon-Performed Adductor Canal Block
Adductor canal block performed by an anesthesiologist under ultrasound guidance using real-time imaging. The same concentration and volume of local anesthetic are administered using a standardized ultrasound-guided technique.
Biological: Ultrasound-Guided 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.
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.
Pain (Numeric Rating Scale)
Postoperative pain will be assessed using the Numeric Rating Scale (NRS, 0-10). Pain scores will be recorded at predefined time points under resting conditions. The primary analysis will evaluate the non-inferiority of surgeon-performed adductor canal block compared to ultrasound-guided adductor canal block.
Time frame: Baseline, postoperative day 0 (afternoon), postoperative day 1 (morning and afternoon), and postoperative day 2 (morning)
No study locations are listed for this record.
Plan to share: No
No publications or documents are linked to this record.
This study is not yet recruiting, as verified in Mar 2026. You cannot join it, but the record below documents what was studied.
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Yonsei University