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Evaluation of Local Anesthetic Diffusion to the Sciatic Nerve During Adductor Canal Block

NCT ID: NCT07301476

Last Updated: 2025-12-24

Study Results

Results pending

The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.

Basic Information

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Recruitment Status

RECRUITING

Total Enrollment

70 participants

Study Classification

OBSERVATIONAL

Study Start Date

2025-12-10

Study Completion Date

2027-12-31

Brief Summary

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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 clinically the frequency of the spread of the adductor canal block to the fibular and tibial nerves.

Detailed Description

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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 clinical sensorimotor testing.

Conditions

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Sciatic Nerve Adductor Canal Syndrome

Keywords

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Adductor Canal Sciatic Nerve Local anesthesia diffusion

Study Design

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Observational Model Type

COHORT

Study Time Perspective

PROSPECTIVE

Eligibility Criteria

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Inclusion Criteria

* patients over 18 years old scheduled for elective knee surgery under general anesthesia
* in our center
* receiving an adductor canal block

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 the adductor 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
Minimum Eligible Age

18 Years

Eligible Sex

ALL

Accepts Healthy Volunteers

No

Sponsors

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Assistance Publique - Hôpitaux de Paris

OTHER

Sponsor Role lead

Responsible Party

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Responsibility Role SPONSOR

Principal Investigators

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Romuald Henry, MD

Role: PRINCIPAL_INVESTIGATOR

CHU Raymond Poincaré - APHP

Locations

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Department of Anesthésia, CHU Raymond Poincaré - APHP

Boulogne-Billancourt, , France

Site Status RECRUITING

Countries

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France

Central Contacts

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Romuald Henry, MD

Role: CONTACT

Phone: + 33 06 72 83 17 51

Email: [email protected]

Other Identifiers

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2025-A00945-44

Identifier Type: REGISTRY

Identifier Source: secondary_id

APHP250730

Identifier Type: -

Identifier Source: org_study_id