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NCT Number: NCT05961085

Incidence of Adductor Canal Catheter Dislodgment

The goal of this observational study is to determine the incidence of dislodgement for adductor canal catheters after total knee arthroplasty on post-operative day 1. We will also attempt to identify factors associated with secondary catheter failure.

Active, Not Recruiting

This study is active but is not currently recruiting participants.

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Key information

Conditions

Total Knee Arthroplasty

Age range

50 year and older

Sex eligibility

All sexes

Study type

Observational

Primary location

Sunnybrook Health Sciences Centre

Toronto, Ontario, M4N 3M5, Canada

About this study

Total knee arthroplasty (TKA) is a common procedure for indications including osteoarthritis and malignancy involving the knee, with over 55,285 knee replacements performed between 2020-2021 in Canada. Ultrasound guided continuous adductor canal block (cACB) is the standard of care for postoperative analgesia for this procedure. The catheter is not always as effective at providing analgesia as would be expected - which could be due to displacement of the catheter. This displacement is most likely to occur peri-operatively or during physiotherapy post-operatively and as such, post-operative assessments can provide useful insight into causes of secondary failure. This prospective observational study aims to estimate the cACB dislodgment on POD 1 rate at a high volume, tertiary care referral centre, and identify factors associated with dislodgement and clinical sequelae. As this is an observational/QI study of the current standard of care at Sunnybrook Health Sciences Centre, anesthesiologists are free to use the cross sectional versus parallel insertion of the cACB per their discretion.

Who can participate

Healthy volunteers accepted: No

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

Inclusion criteria

  • Patients scheduled for Total Knee Arthroplasty
  • Older than 50 years

Exclusion criteria

  • Body Mass Index greater than 40
  • Chronic opioid consumption (greater than 30mg oral morphine equivalent daily)
  • Contraindication to Adductor Canal Catheter

Treatment and study plan

Adductor Canal Catheter

Procedure

Ultrasound guided Adductor Canal Catheter for total knee arthroplasty analgesia

Primary outcomes

  1. Adductor Canal Catheter tip in correct position on postoperative day 1

    Time frame: Postoperative day 1 (08:00AM)

    Ultrasound confirmation of injectate spread adjacent to the femoral artery on postoperative day 1 (08h00)

Secondary outcomes

  1. Adductor Canal Catheter tip in correct position after insertion

    Time frame: Preoperative

    Ultrasound confirmation of injectate spread adjacent to the femoral artery before surgery

  2. Sensory block

    Time frame: Postoperative day 1 (08:00AM)

    Loss of sensation in the saphenous nerve distribution on postoperative day 1 (08h00)

  3. Postoperative opioid consumption (08h00)

    Time frame: Postoperative day 1 (08:00AM)

    Cumulative opioid consumption after total knee arthroplasty to postoperative day 1 (08h00)

  4. Numeric Rating Scale for Pain (NRS) at rest on postoperative day 1 (08h00)

    Time frame: Postoperative day 1 (08:00AM)

    Maximum pain score on 0-10 Likert Scale

Other outcomes

  1. Adductor catheter occlusion

    Time frame: Postoperative day 1 (08:00AM)

    Any recording of local anesthetic infusion pump recording an occlusion

  2. Patient satisfaction with analgesia on postoperative day 1

    Time frame: Postoperative day 1 (08:00AM)

    Patient satisfaction measured by 0-10 Likert Scale

Sponsors and collaborators

Lead sponsor

Sunnybrook Health Sciences Centre

Other

Registry information

Official study title

Positioning of Continuous Adductor Canal Catheters After Total Knee Arthroplasty

Important dates

Study start
2023
Primary completion
2025
Study completion
2025
First posted
Jul 27, 2023
Registry last updated
Sep 12, 2025

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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