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NCT Number: NCT07638514

Postoperative Analgesia Using a Perineural Catheter Versus a Single Nerve Block in Rearfoot Surgery

Postoperative pain following hindfoot surgery is often severe and can persist for several days. It frequently leads to the use of systemic analgesics, particularly opioids, whose adverse effects are well known. Furthermore, poorly controlled postoperative pain is a recognized independent risk factor for the development of chronic pain.

Ambulatory perineural catheter techniques, already used in our department for hindfoot surgeries, allow for continuous infusion of local anesthetic. They have demonstrated their efficacy in numerous orthopedic surgeries, but data specific to hindfoot surgery remain limited. It therefore seems appropriate to evaluate whether prolonged analgesia via a perineural catheter improves postoperative pain management and promotes functional recovery.

The study is conducted as a practice evaluation audit. It relies on the collection of data from routine care, without any modification to intraoperative care. This methodology allows for an objective evaluation of the benefits of the perineural catheter compared to a single-injection popliteal sciatic block with local anesthetic, while documenting the frequency and nature of complications associated with the technique (leaks, accidental or intentional catheter removal).

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Key information

Conditions

Hindfoot Surgery Agnosia Analgesia Nervous System Diseases Neurobehavioral Manifestations Neurologic Manifestations Pathological Conditions, Signs and Symptoms Perceptual Disorders Perineural Catheter Signs and Symptoms

Age range

18 year and older

Sex eligibility

All sexes

Study type

Observational

Primary location

Who can participate

Healthy volunteers accepted: No

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

  • Adult patients;
  • Patients with an American Society of Anesthesiologists physical status (ASA score) of 1, 2, or 3;
  • Patients who have undergone hindfoot surgery;
  • Patients capable of completing the questionnaires.

Exclusion criteria

  • Contraindications to regional anesthesia (known hypersensitivity to the local anesthetic, infection at the injection site, uncontrolled neurological condition);
  • Emergency surgery
  • Cognitive impairment;
  • Uncontrolled psychiatric condition;
  • Pregnancy or breastfeeding;
  • Substance abuse;
  • Use of neuroleptics or lithium;
  • Individuals subject to legal guardianship
  • Individuals deprived of liberty by judicial or administrative order
  • Patients who object to the study.

Treatment and study plan

Phone contact

Other

All patients are contacted by phone to assess pain during movement and at rest on each of the first 3 days after surgery, as well as their use of various pain medications

perineural catheter

Device

Use of a perineural catheter for ambulatory analgesia

Regional Anesthesia

Procedure

regional anesthesia

Primary outcomes

  1. Pain on movement using a numerical scale from 0 (no pain) to 10 (maximum pain)

    Time frame: Day 1 postoperative

    Postoperative pain on movement at Day 1. Pain intensity during movement assessed using an 11-point Numerical Rating Scale (NRS; 0 = no pain, 10 = worst possible pain)

Secondary outcomes

  1. postoperative pain at rest using a numerical scale from 0 (no pain) to 10 (maximum pain)

    Time frame: Postoperative Day 0 through Postoperative Day 3

    to assess analgesic efficacy at rest

  2. postoperative pain during mobilization using a numerical scale from 0 (no pain) to 10 (maximum pain)

    Time frame: From Baseline to Day 3

    to evaluate the analgesic efficacy during mobilization

  3. Postoperative consumption of morphine equivalents in milligrams

    Time frame: Postoperative Day 0 through Postoperative Day 3

    Cumulative

  4. Daily postoperative consumption of morphine equivalents in milligrams

    Time frame: Baseline, Day 1, Day 2 and Day 3

    Daily

  5. Postoperative use of non-opioid analgesics

    Time frame: Postoperative Day 0 through Postoperative Day 3

    Cumulative

  6. Daily postoperative use of non-opioid analgesics

    Time frame: Baseline, Day 1, Day 2 and Day 3

    Daily

  7. French Quality of Recovery -15 score (FQoR-15 - from 0 to 150)

    Time frame: Postoperative Day 0 through Postoperative Day 2

    to assess functional recovery and postoperative rehabilitation

  8. Proportion of patients experiencing at least one adverse event related to the regional anesthesia technique

    Time frame: Postoperative Day 0 through Postoperative Day 3

    Accidental or intentional removal of the catheter Leaks at the injection site or in the infusion system Bruise or local infection Falls potentially related to the residual motor block

  9. proportion of patients experiencing at least one postoperative complication following hindfoot surgery

    Time frame: Postoperative Day 0 through Postoperative Day 3

    Readmission to the hospital Consultation with the attending physician for uncontrolled postoperative pain or complications related to the procedure Confirmed infection with antibiotic treatment initiated

  10. length of hospital stay, calculated in whole days

    Time frame: Postoperative Day 0 through Postoperative Day 3

    Duration censored on Day 3 if the patient is still hospitalized on that date

Study contacts

Contact information is provided by the study sponsor or research team.

Benjamin DUMARTINET

CONTACT

[email protected]

241353637 ext. +33

Sponsors and collaborators

Lead sponsor

University Hospital, Angers

Other Gov

Registry information

Official study title

A Comparative Evaluation of Postoperative Analgesia Using a Perineural Catheter Versus a Single Nerve Block in Rearfoot Surgery

Acronym: CATHORNOT

Important dates

Study start
2026
Primary completion
2027
Study completion
2027
First posted
Jun 10, 2026
Registry last updated
Sep 8, 2026

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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