This study evaluates postoperative analgesic efficacy within 48 hours between epidural analgesia and single-shot bilateral adductor canal blocks in bilateral total knee arthroplasty. Half of participants will be received continuous epidural analgesia, while other half of participants will be received single-shot bilateral adductor canal blocks.
Continuous epidural analgesia is effective postoperative pain control but it has some limitations in patients with hypotension, concurrent anticoagulants, technical difficulty, urinary retention. Adductor canal block is less invasive than continuous epidural analgesia. It provides effective analgesia for total knee arthroplasty and preserves quadriceps muscle strength.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
DOUBLE
Enrollment
70
Continuous epidural block at level L2-3 or L3-4 with 0.0625% bupivacaine + fentanyl 2 mcg/ml infusion epidurally 5 ml/hr for 48 hours postoperatively.
Bilateral single-shot adductor canal blocks, ultrasound guidance, with 0.33% bupivacaine 15 ml on each side.
Faculty of Medicine Siriraj Hospital, Mahidol University
Bangkok, Thailand
pain scores at rests
numerical rating scales
Time frame: 48 hours postoperatively
morphine consumptions
total miligrams of morphine use in each arm
Time frame: 48 hours postoperatively
pain scores on movement
numerical rating scales
Time frame: 48 hours postoperatively
side effects of interventions
nausea vomiting hypotension
Time frame: 48 hours postoperatively
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