Total Knee Arthroplasty Utilizing Adductor Canal Block: Effect on Quadriceps Sparing
Osteoarthritis (Knee)

About this trial
This is an interventional treatment trial for Osteoarthritis (Knee) focused on measuring adductor canal, femoral, quadriceps
Eligibility Criteria
Inclusion Criteria:
- All patients undergoing primary unilateral total knee arthroplasty
- Planned use of combined spinal epidural (CSE) anesthesia
- Ability to follow study protocol
Exclusion Criteria:
- Contraindication to a spinal or epidural anesthetic
- Chronic opioid use (defined as daily or almost daily use of opioids for >3 months)
- Allergy to local anesthetics
- Pre-existing neuropathy or weakness of the operative limb
- Any neuromuscular disorder
- Diabetes type I and II
- Contraindication to a femoral nerve block or adductor canal nerve block
- Allergy or intolerance to any of the study medications
- BMI > 35 kg/m2
Sites / Locations
- Hospital for Special Surgery
Arms of the Study
Arm 1
Arm 2
Arm 3
Experimental
Experimental
Experimental
High volume Adductor canal block
Low volume Adductor Canal Block
Femoral nerve block
Adductor canal block performed in the distal thigh (1/3 of the total distance between the superior border of the patella and the femoral crease, cephalad to the patella) utilizing an injectate volume of 30 mL 0.25% bupivacaine/ epinephrine
Adductor canal block performed in the distal thigh (1/3 of the total distance between the superior border of the patella and the femoral crease, cephalad to the patella) utilizing an injectate volume of of 10 mL 0.75% bupivacaine/ epinephrine
Femoral nerve block with 10 mL 0.75 % bupivacaine/epinephrine