Actively Recruiting
Postoperative Effects of Femoral Triangle Block Versus Adductor Canal Block on Early Quadriceps Function After Total Knee Arthroplasty Under a Multimodal Analgesia Protocol: A Randomized Double-Blind Controlled Trial
Led by Social Medical Corporation Daiyukai · Updated on 2026-04-16
136
Participants Needed
1
Research Sites
2 weeks
Total Duration
On this page
AI-Summary
What this Trial Is About
Researchers are investigating the effects of two types of nerve blocks—femoral triangle block (FTB) and adductor canal block (ACB)—on early quadriceps muscle function after total knee arthroplasty (TKA). The study aims to find out if FTB leads to more early quadriceps weakness compared to ACB when both are used with a standardized multimodal pain relief plan. This randomized, double-blind trial involves adult patients undergoing primary unilateral TKA to better understand postoperative motor function and pain management.
CONDITIONS
Brief Title
Femoral Triangle Block vs Adductor Canal Block on Early Quadriceps Function After Total Knee Arthroplasty
Who Can Participate
Eligibility Criteria
You may qualify if you...
- Adult patients 20 years of age or older scheduled for primary unilateral total knee arthroplasty
- American Society of Anesthesiologists (ASA) physical status I to III
- Ability to walk independently before surgery
- Ability to understand study procedures and provide written informed consent
- Planned use of regional anesthesia as part of standard perioperative care
- Ability to extend the knee below 30 degrees before surgery (no knee extension contracture)
You will not qualify if you...
- Known allergy or contraindication to local anesthetic agents used in this study
- Pre-existing neurological or neuromuscular disorders affecting lower limb strength or motor control
- Severe cognitive impairment or psychiatric conditions interfering with participation or assessment
- History of revision knee arthroplasty on the operative side
- Severe preoperative quadriceps weakness preventing reliable baseline strength assessment
- Any condition the investigator deems makes participation inappropriate
AI-Screening
AI-Powered Screening
Complete this quick 3-step screening to check your eligibility
Your Study Journey
Duration - 2 to 4 weeks
Participants are screened for eligibility to participate in the trial.
1 visit (in-person)
Duration - Single day around surgery
Participants receive either an ultrasound-guided femoral triangle block or adductor canal block, each combined with a popliteal plexus block, as part of a standardized multimodal analgesia protocol following total knee arthroplasty.
1 baseline visit on surgery day and multiple assessments within 24 hours after block completion
Duration - Up to 7 days after surgery
Participants are monitored for quadriceps function, pain intensity, mobilization, knee range of motion, and rehabilitation progress for up to 7 days after surgery.
Daily visits or assessments from postoperative days 1 to 7
Trial Site Locations
Total: 1 location
1
Department of Anesthesiology, Daiyukai General Hospital
Ichinomiya, Aichi-ken, Japan, 491-8511
Actively Recruiting
Research Team
N
Norihiro Sakai, MD, PhD
T
Tomohiro Michino, MD, PhD
How is the study designed?
Study Type
INTERVENTIONAL
Masking
DOUBLE
Allocation
RANDOMIZED
Model
PARALLEL
Primary Purpose
TREATMENT
Number of Arms
2
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