Functional Outcome and Analgesia in TKA: Radiofrequency vs Continuous Adductor Canal Block
Osteoarthritis, Knee
About this trial
This is an interventional treatment trial for Osteoarthritis, Knee focused on measuring Pulsed and Continuous Radiofrequency Treatment, Continuous adductor canal block, Postoperative pain, Functional recovery, Total Knee Joint Replacement
Eligibility Criteria
Inclusion Criteria:
- Diagnosis of knee Osteoarthritis requiring Total Knee Arthroplasty (TKA)
Exclusion Criteria:
- Previous TKA (revision surgery)
- ASA (American Society of Anesthesiology) Classification > 3
- Known Rheumatologic disease
- Morbid Obesity (BMI > 45)
- Inability to perform simple physical tasks (6 minutes walk test, Timed-Up and Go test)
- Organ transplant, Allergy to opioids, to local anesthetics or other medications used in the study,
- Chronic use of opioids or sedatives, Contraindication to receive regional anesthesia (e.g. coagulation defect), contraindication to Patient Controlled Analgesia pump (PCA) or inability to use PCA or to comprehend pain scales
Sites / Locations
- McGill University Health Centre, Montreal General Hospital
Arms of the Study
Arm 1
Arm 2
Experimental
Active Comparator
Pulsed and Continuous Radiofrequency
Continuous adductor canal block
In this group of patients undergoing total knee arthroplasty (allocation of patients is randomized), Pulsed radiofrequency (PRF) is applied to the saphenous nerve of the knee, associated to Continuous Radiofrequency (TRF) applied to the genicular nerves of the knee . A sham catheter is inserted in the mid-tigh to simulate a continuous adductor canal block, and connected to an infusion of normal saline (assessor and patient blinded to the treatment)
Continuous Adductor Canal Block Continuous adductor canal block is performed in this group of patients, with a catheter infusing ropivacaine 0.2% in the first 48 hours after surgery. The solutions bags are labelled in order to make assessor and patients, blinded to the treatment (Ropivacaine vs Normal Saline)