Evaluation by Ultrasound Imaging of Local Anesthetic Spread to the Popliteal Fossa During an Adductor Canal Block

Last updated: November 19, 2025
Sponsor: Assistance Publique - Hôpitaux de Paris
Overall Status: Terminated

Phase

N/A

Condition

Pain

Knee Injuries

Treatment

N/A

Clinical Study ID

NCT06245460
APHP231771
2023-A01774-41
  • Ages > 18
  • All Genders

Study Summary

Adductor canal block is an effective analgesic technique for major knee surgery. However, the saphenous nerve block is not sufficient to explain this block's efficiency. It has been shown that adductor canal block can spread to the tibial and fibular nerves through the adductor hiatus. However this diffusion's frequency has never been measured. The main objective of this study is to assess the frequency of the spread of the adductor canal block to the fibular and tibial nerves assessed by ultrasound observation at the popliteal fossa.

Eligibility Criteria

Inclusion

Inclusion Criteria:

  • patients scheduled for elective knee surgery under general anesthesia

  • in center of Ambroise Paré hospital

  • receiving an adductor canal block

Exclusion

Exclusion Criteria:

  • patients cognitively impaired

  • patients suffering from peripheral neuropathy at the lower limb

  • patients receiving an IPACK block or surgical knee infiltration to complete theadductor canal block analgesia

  • patients who refused to take part in this study

  • pregnant or breastfeeding patients

  • patients under guardianship

  • imprisoned patients

  • patients without any medical insurance

Study Design

Total Participants: 30
Study Start date:
March 05, 2024
Estimated Completion Date:
April 08, 2025

Study Description

Adductor canal block is an effective analgesic technique for major knee surgery. The PROSPECT group recommends this block in first intention for locoregional anesthesia in total knee arthroplasty. It has been shown to not be inferior to femoral nerve block in this indication.

The adductor canal block targets the saphenous nerve and, through its spread in the adductor canal, the posterior branch of obturator nerve and the vastus medialis nerve. However these nerves can't fully explain this block's efficiency.

It has been shown that local anesthetic can spread in the adductor canal to the tibial and fibular nerves through the adductor hiatus. However, this spread is inconstant, and no study has evaluated the frequency of this spread yet.

The main objective of this study is to assess the diffusion's frequency of adductor canal block to fibular and tibial nerves through ultrasound observation at the popliteal fossa.

Connect with a study center

  • Department of anesthesia, Ambroise Paré Hospital - APHP

    Boulogne-Billancourt, 92100
    France

    Site Not Available

  • Department of anesthesia, Ambroise Paré Hospital - APHP

    Boulogne-Billancourt 3031137, 92100
    France

    Site Not Available

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