Continuous Versus Single-Shot Adductor Canal Block in Total Knee Arthroplasty
Pain, Postoperative
About this trial
This is an interventional treatment trial for Pain, Postoperative focused on measuring Total Knee Arthroplasty, Physiotherapy
Eligibility Criteria
Inclusion Criteria:
- Scheduled unilateral total knee arthroplasty,
- ASA physical status I to III,
- age > 18 years.
Exclusion Criteria:
- Body Mass Index >35,
- pre-existing lower extremity neurologic abnormalities,
- infection, history of chronic opioid use,
- pregnancy, contraindications to peripheral nerve block or central neuraxial blockade,
- allergy or contraindications to local anesthetics or drugs that would be used for multimodal analgesia,
- inadequate command of English
- refusal of spinal anaesthetic
Sites / Locations
- Brian O'Donnell
Arms of the Study
Arm 1
Arm 2
Active Comparator
Sham Comparator
Continuous Adductor Canal Saphenous Catheter
Single Shot Adductor Canal Saphenous Block
Participants in this group were randomly allocated to receive a perineural catheter placed at the time of adductor canal block (ACB). The ACB was performed under ultrasound guidance and a 10ml injection of 0.5% bupivacaine was administered adjacent to the saphenous nerve. A PERINEURAL CATHETER WAS INSERTED IMMEDIATELY AFTER INJECTION OF THE INITIAL BOLUS OF LOCAL ANAESTHETIC. THE CATHETER WAS CONNECTED TO A PAJUNK FUSERPUMP CONTAINING 350 ML OF 0.15625% BUPIVACAINE AND INFUSED AT 8ML/HR.
Participants in this group were randomly allocated NOT to receive a perineural catheter placed at the time of adductor canal block (ACB). The ACB was performed under ultrasound guidance and a 10ml injection of 0.5% bupivacaine was administered adjacent to the saphenous nerve. A SHAM CATHETER WAS PLACED ON THE SURFACE OF THE LEG AND COVERED BY AN OPAQUE DRESSING TO CONCEAL THE INSERTION SITE. ALL PATIENTS HAD THE PROXIMAL END OF THEIR CATHETER ATTACHED TO PORTABLE ELASTOMERIC PUMPS (PAJUNK FUSERPUMP 350 ML) CONCEALED IN OPAQUE BAGS TO PREVENT PATIENTS AND ASSESSORS FROM DETERMINING WHICH PUMPS WERE ACTUALLY FUNCTIONING. THESE PUMPS FUNCTION WITHOUT A MOTOR AND SO MAKE NO SOUND.