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

Sponsor
Social Medical Corporation Daiyukai
Study ID
NCT07524387
Status
Recruiting
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Conditions

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

Eligibility Criteria

Sex
ALL
Age
20 Years - N/A
Healthy Volunteers
Not accepted

Interventions

  • Femoral Triangle Block (FTB) Group — PROCEDURE
    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.
  • Adductor Canal Block (ACB) Group — PROCEDURE
    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.

Study Details

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.

Key Dates

First listed
Apr 13, 2026
Start date
Apr 13, 2026
Status verified
Apr 2026
Primary completion
Mar 15, 2029
Completion
Mar 31, 2029

Study Design

Enrollment
136 participants (estimated)
Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT

Arms

  • Experimental: Femoral Triangle Block (FTB) Group
    Ultrasound-guided femoral triangle block with standardized multimodal analgesia including popliteal plexus block.
  • Active Comparator: Adductor Canal Block (ACB) Group
    Ultrasound-guided adductor canal block with standardized multimodal analgesia including popliteal plexus block.

Primary Outcome Measure

Participants with quadriceps functional impairment at 6 hours after block completion [ Time Frame: 6 hours after block completion ]

Central Contacts

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