Effect of Adding a Biceps Femoris Short Head Block to an Adductor Canal Block on Postoperative Pain and Functional Outcomes After Total Knee Arthroplasty: A Randomized Controlled Trial
Trial Snapshot
- Phase
- Not Applicable
- Status
- Not yet recruiting
- Sponsor
- Cukurova University
- Enrollment
- 132
- Locations
- 1
Study Overview
Brief Summary
Total knee arthroplasty is associated with moderate to severe postoperative pain, which may delay mobilization and recovery. Multimodal analgesia including regional anesthesia techniques is widely used to improve outcomes. The adductor canal block (ACB) provides anteromedial knee analgesia but may not adequately cover the posterolateral region.
The biceps femoris short head (BiFeS) block is a novel motor-sparing regional anesthesia technique targeting the posterolateral capsule of the knee. This randomized controlled trial aims to compare the analgesic efficacy and functional outcomes of ACB combined with BiFeS block versus ACB alone in patients undergoing total knee arthroplasty.
The primary outcome is posterior knee pain at postoperative 6 hours. Secondary outcomes include pain scores within 48 hours, opioid consumption, early and late functional recovery, and opioid-related adverse effects.
Study Design
- Study Type
- Interventional
- Allocation
- Randomized
- Intervention Model
- Parallel
- Primary Purpose
- Treatment
- Masking
- Quadruple (Participant, Care Provider, Investigator, Outcomes Assessor)
Eligibility Criteria
- Ages
- 18 Years to 80 Years (Adult, Older Adult)
- Sex
- All
- Accepts Healthy Volunteers
- No
Inclusion Criteria
- •ASA I-III
- •Adult patients undergoing unilateral primary TKA
- •Planned spinal anesthesia
- •Written informed consent
Exclusion Criteria
- •Coagulopathy
- •Drug allergy
- •BMI > 35
- •Renal/hepatic failure
- •Chronic pain or opioid use
- •Depression or psychiatric disorder
- •Revision or bilateral TKA
- •Neurological deficits
- •Preoperative ROM < 90°
Arms & Interventions
ACB + BiFeS
Participants receive spinal anesthesia followed by an ultrasound-guided adductor canal block and a biceps femoris short head block using local anesthetic for postoperative analgesia.
Intervention: Adductor Canal Block (Procedure)
ACB + BiFeS
Participants receive spinal anesthesia followed by an ultrasound-guided adductor canal block and a biceps femoris short head block using local anesthetic for postoperative analgesia.
Intervention: Biceps Femoris Short Head Block (Procedure)
ACB + sham BiFeS
Participants receive spinal anesthesia followed by an ultrasound-guided adductor canal block and a sham biceps femoris short head block using normal saline.
Intervention: Adductor Canal Block (Procedure)
ACB + sham BiFeS
Participants receive spinal anesthesia followed by an ultrasound-guided adductor canal block and a sham biceps femoris short head block using normal saline.
Intervention: Sham Biceps Femoris Short Head Block (Procedure)
Investigators
Demet Laflı Tunay
Associate Professor of Anesthesiology
Cukurova University