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Not yet recruiting NCT07506629

Adductor Canal Block Methods in Bilateral Total Knee Arthroplasty

No phase Interventional Knee Osteoarthritis Total Knee Arthroplasty Postoperative Pain Peripheral Nerve Block

For patients and families

In plain language

An automatic summary of structured registry data. It is an orientation aid, not a substitute for the official protocol or a physician assessment.

What is being studied
The protocol lists: Surgeon-Performed Adductor Canal Block, Ultrasound-Guided Adductor Canal Block.
Who it may be relevant to
Registry conditions: Knee Osteoarthritis, Total Knee Arthroplasty, Postoperative Pain, Peripheral Nerve Block. Basic parameters: from 60 years · All.
What needs checking
Age, condition and sex are only basic indicators. Prior treatment, laboratory values and other mandatory requirements appear in the eligibility criteria below.
Where it takes place
Center list to be confirmed — check the primary protocol.
Next step
Save the trial, show it to the treating physician, and confirm current recruitment with the study center. Costs, documents and travel →

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Official title

Comparison of Surgeon-Performed Intraoperative Adductor Canal Block and Ultrasound-Guided Anesthesiologist-Performed Block in Bilateral Total Knee Arthroplasty

Overview

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.

Interventions

  • Biological 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.
  • Biological 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.

Primary outcome measures

  • Pain (Numeric Rating Scale) [Time frame: Baseline, postoperative day 0 (afternoon), postoperative day 1 (morning and afternoon), and postoperative day 2 (morning)]

Eligibility criteria

Inclusion criteria

  • Adult patients aged 19 years or older
  • Patients scheduled for bilateral total knee arthroplasty
  • Patients who provide written informed consent

Exclusion criteria

  • Refusal to participate or inability to provide informed consent
  • Neurological or psychiatric conditions affecting cooperation (e.g., dementia, delirium)
  • Pre-existing neurological or anatomical abnormalities of the lower extremities
  • Chronic opioid use or opioid dependence
  • Coagulation disorders or contraindications to nerve block
  • Pregnancy
  • Cases in which ultrasound evaluation is technically not feasible

Criteria are shown verbatim from the registry (in English). Final eligibility is always assessed by the study center.

Healthy volunteers: No

Study design

Allocation
Randomized
Model
Parallel assignment
Masking
Open label
Primary purpose
Treatment

Study locations

Center list to be confirmed — check the primary protocol.

Identifiers

NCT: NCT07506629 · 4-2026-0060

Primary sources (government registries)

View this study on ClinicalTrials.gov ↗