N/A
N=40
Skin to Adductor Canal Distance in Various Positions
Knee Arthritis
Bottom Line
View on ClinicalTrials.gov: NCT03562559 ↗Enrolled (actual)
40
Serious AEs
—
Results posted
Sep 2019
Primary outcome: Primary: Skin to Adductor Canal Distance Disparity — 1.01; 0.28; 0.43; 0.63 centimeters
Study Design & Population
- Study type
- Observational
- Phase
- N/A
- Interventions
- Measurements Using Ultrasound (Other)
- Age
- Adult, Older Adult · 18+ yrs
- Sex
- All
- Sponsor
- University of British Columbia
- Primary completion
- Jan 2019
Outcome Measures
| Outcome | Result | p-value |
|---|---|---|
| PRIMARY Skin to Adductor Canal Distance Disparity |
1.01; 0.28; 0.43; 0.63 | — |
Summary
To control pain after total knee replacement surgery a catheter (tubing) is sometimes inserted into an anatomic space containing nerves that provide sensation to parts of the knee. This space is called the adductor canal.
The catheters often stop working before we remove them for unclear reasons. The investigators think this is because the catheters become dislodged from where it was meant to be. This could be due to repeated movements of the catheter tip brought on by patients contracting their leg muscles when they ambulate or perform physio.
The investigators want to confirm this by measuring the distance from a fixed spot on the patient's thigh to the adductor canal using an ultrasound machine. The leg will be measured in various positions to simulate muscle movements. A significant change in the distance could possibly contribute to catheter dislodgement and result in catheter failure.
Eligibility Criteria
Inclusion Criteria
- Patients over or equal to the age of 18 years old who can understand the study protocol and are able to give consent
- Patients must be undergoing a primary total knee arthroplasty with neuraxial anaesthesia
Exclusion Criteria
- Patients with an allergy to ultrasound transducer gel or measuring tape
Data sourced from ClinicalTrials.gov (NCT03562559). Outcome figures and adverse-event rates are extracted automatically from the registry's posted results and are provided for clinician reference, not as a substitute for the primary publication.