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NCT Number: NCT07702552

Postoperative Analgesic Efficacy of ACB+iPACK vs FTB+Selective Tibial+Obturator Blocks in ACL Reconstruction

This prospective, comparative study aims to evaluate the postoperative analgesic efficacy of ultrasound-guided Adductor Canal Block (ACB) combined with iPACK block versus Femoral Triangle Block (FTB) combined with selective tibial nerve block and obturator nerve block in patients undergoing arthroscopic anterior cruciate ligament (ACL) reconstruction. The primary objective is to determine which regional anesthesia regimen provides superior pain relief at rest and during movement. The secondary objectives include assessing morphine consumption, motor blockade using the Bromage score, patient satisfaction, and potential adverse effects of these anesthesia techniques.

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Key information

Conditions

Anterior Cruciate Ligament Injuries Knee Injuries Leg Injuries Neurologic Manifestations Pain Pain, Postoperative Pathologic Processes Pathological Conditions, Signs and Symptoms Postoperative Complications Postoperative Pain Signs and Symptoms Wounds and Injuries

Age range

16 year and older

Sex eligibility

All sexes

Study type

Interventional

Phase

Not applicable

Who can participate

Healthy volunteers accepted: No

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

  • Age 16 years and older
  • Patients undergoing elective arthroscopic anterior cruciate ligament (ACL) reconstruction
  • ASA physical status I-II
  • Indicated for spinal anesthesia
  • Provided informed consent

Exclusion criteria

  • Infection at the injection site
  • Spinal cord or lower limb nerve injury
  • Contraindications to regional anesthesia (Levobupivacaine)
  • Known allergy to Paracetamol or Diclofenac
  • Coagulopathy

Treatment and study plan

Ultrasound-guided Adductor Canal Block (ACB)

Procedure

Ultrasound-guided administration of 10 mL levobupivacaine 0.2% into the adductor canal space to provide postoperative analgesia

Ultrasound-guided iPACK block

Procedure

Ultrasound-guided administration of 15 mL levobupivacaine 0.2% into the space between the popliteal artery and the posterior capsule of the knee to provide posterior knee analgesia.

Ultrasound-guided Femoral Triangle Block (FTB)

Procedure

Ultrasound-guided administration of 10 mL levobupivacaine 0.2% at the distal apex of the femoral triangle to provide anterior and medial knee analgesia

Ultrasound-guided Selective Tibial Nerve Block

Procedure

Ultrasound-guided administration of 5 mL levobupivacaine 0.2% around the tibial nerve in the popliteal fossa

Ultrasound-guided Obturator Nerve Block

Procedure

Ultrasound-guided administration of 10 mL levobupivacaine 0.2% targeting the anterior and posterior branches of the obturator nerve within the fascial planes between the adductor muscles.

Primary outcomes

  1. Visual Analog Scale (VAS) for Pain at Rest and Movement

    Time frame: Within the first 24 hours postoperatively

    Evaluating pain scores using the Visual Analog Scale (VAS) at rest and during knee flexion at 0, 1, 3, 6, 9, 12, 18, and 24 hours postoperatively

Secondary outcomes

  1. Total Rescue Morphine Consumption

    Time frame: Within the first 24 hours postoperatively

  2. Motor Blockade Assessment using Bromage Score

    Time frame: Within the first 24 hours postoperatively

  3. Patient Satisfaction Score

    Time frame: 24 hours postoperatively

Study contacts

Contact information is provided by the study sponsor or research team.

Nhan Trong Phan, MD. MSc

CONTACT

[email protected]

+84856271294

Trong Nhan Phan

CONTACT

[email protected]

Sponsors and collaborators

Lead sponsor

Da Nang Hospital

Other

Registry information

Official study title

Evaluation of Postoperative Analgesic Efficacy in Anterior Cruciate Ligament Reconstruction: Ultrasound-Guided Adductor Canal Block Combined With iPACK Block Versus Femoral Triangle Block Combined With Selective Tibial and Obturator Nerve Blocks at Da Nang Hospital

Acronym: ACL-Analgesia

Important dates

Study start
2026
Primary completion
2027
Study completion
2027
First posted
Jul 14, 2026
Registry last updated
Jul 14, 2026

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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