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Femoral Triangle Block vs Adductor Canal Block on Early Quadriceps Function After Total Knee Arthroplasty

NCT07524387 · Status: RECRUITING · Phase: NA · Type: INTERVENTIONAL · Enrollment: 136

Last updated 2026-04-16

No results posted yet for this study

Summary

The goal of this clinical trial is to compare the effects of femoral triangle block (FTB) and adductor canal block (ACB) on early quadriceps function after total knee arthroplasty (TKA).

The main question it aims to answer is whether FTB causes more early quadriceps functional impairment than ACB under a standardized multimodal analgesia protocol.

Researchers will compare FTB and ACB using a composite binary functional outcome measured 6 hours after block completion. Quadriceps functional impairment is defined as the inability to perform a structured straight leg raise or quadriceps muscle strength \<50% of the preoperative baseline.

Participants will be randomly assigned to receive ultrasound-guided FTB or ACB. All participants will also receive a popliteal plexus block and standardized multimodal analgesia.

Conditions

  • Total Knee Arthroplasty
  • Total Knee Arthroplasty Recovery
  • Total Knee Arthroplasty Postoperative Pain

Interventions

PROCEDURE

Femoral Triangle Block (FTB) Group

Ultrasound-guided femoral triangle block performed as part of a standardized multimodal analgesia protocol for total knee arthroplasty. A total of 10 mL of 0.25% levobupivacaine is injected in the femoral triangle to achieve sensory blockade of the saphenous nerve, the nerve to vastus medialis, and surrounding structures. The injection is performed at the distal femoral triangle under ultrasound guidance, targeting the perineural space adjacent to the relevant nerve branches. In all participants, a popliteal plexus block using 15 mL of 0.25% levobupivacaine is additionally performed to standardize posterior knee analgesia.

PROCEDURE

Adductor Canal Block (ACB) Group

Ultrasound-guided adductor canal block performed as part of a standardized multimodal analgesia protocol for total knee arthroplasty. A total of 10 mL of 0.25% levobupivacaine is administered in a divided manner within the proximal adductor canal, targeting both the saphenous nerve within the canal and the nerve to vastus medialis running adjacent to the canal. The injection is performed under ultrasound guidance to achieve selective sensory blockade while minimizing motor involvement. In all participants, a popliteal plexus block using 15 mL of 0.25% levobupivacaine is additionally performed to standardize posterior knee analgesia.

Sponsors & Collaborators

  • Social Medical Corporation Daiyukai

    lead OTHER

Principal Investigators

  • Norihiro Sakai, MD, PhD · Department of Anesthesiology, Daiyukai General Hospital

Study Design

Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
DOUBLE
Model
PARALLEL

Eligibility

Min Age
20 Years
Sex
ALL
Healthy Volunteers
No

Timeline & Regulatory

Start
2026-04-13
Primary Completion
2029-03-15
Completion
2029-03-31

Countries

  • Japan

Study Locations

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Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT07524387 on ClinicalTrials.gov