About this trial
Anterior cruciate ligament (ACL) reconstruction is commonly associated with moderate to severe postoperative pain, particularly during the early postoperative period and rehabilitation. Effective postoperative analgesia is important to facilitate early mobilization, improve patient comfort, and reduce opioid consumption and opioid-related adverse effects.
Adductor canal block (ACB) is commonly used as part of multimodal analgesia for knee surgery because it provides analgesia while largely preserving quadriceps motor function. However, ACB primarily targets the anteromedial aspect of the knee and may provide limited analgesia for pain arising from the posterior and posterolateral knee.
The biceps femoris short head (BiFeS) block is a motor-sparing fascial plane block targeting sensory contributions to the posterolateral knee region. Combining BiFeS block with ACB may therefore provide more comprehensive analgesia than ACB alone.
This randomized study aims to compare the postoperative analgesic efficacy of adductor canal block alone with adductor canal block combined with BiFeS block in patients undergoing anterior cruciate ligament reconstruction surgery.
Eligibility criteria
This trial does not accept healthy volunteersQualifiers
Patients aged 18-65 years
Patients scheduled for elective unilateral anterior cruciate ligament reconstruction surgery
American Society of Anesthesiologists physical status I-III
Patients who provide written informed consent
Disqualifiers
Age <18 or >65 years
ASA physical status IV or higher
Coagulopathy or ongoing anticoagulant therapy incompatible with peripheral nerve block
Infection at the block injection site
Trial design
Parallel
Treatments tested in this trial
Adductor Canal Block
Procedure/SurgeryUltrasound-guided adductor canal block will be performed using 10 mL of 0.25% bupivacaine.
BiFeS Block
Procedure/SurgeryUltrasound-guided BiFeS block will be performed using 20 mL of 0.25% bupivacaine.
Treatment groups
Trial outcomes
Primary outcomes
Pain Score
Pain will be assessed at rest using the visual analog scale on a scale from 0 (no pain) to 100 (worst pain). Pain assessment will be done at 6th hour after surgery.
Secondary outcomes
Pain Scores
Pain will be assessed at rest using the visual analog scale on a scale from 0 (no pain) to 100 (worst pain). Pain assessment will be done at 0st, 1st, 2nd, 12th, and 24th hours after surgery.
Total Postoperative Morphine Consumption During the First 24 Hours AfterSurgery
Total Postoperative Morphine Consumption During the First 24 HoursAfter Surgery
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