This study aims to compare the analgesic efficacy of supra-iliac anterior quadratus lumborum block (SA-QLB) and pericapsular nerve group (PENG) block in patients undergoing total hip arthroplasty (THA).
Age from 18 to 75 years.
Both sexes.
American Society of Anesthesiologists (ASA) classification I-III.
Scheduled for primary elective unilateral total hip arthroplasty (THA) under spinal anesthesia.
Known allergies to the drugs used.
Infection at the injection site.
Bleeding disorders.
Recognized neuromuscular disorders.
Parallel
Supra-iliac anterior quadratus lumborum block
Other interventionPatients will receive a supra-iliac anterior quadratus lumborum block (SA-QLB) using 20mL of bupivacaine 0.25%.
Pericapsular nerve group block
Other interventionPatients will receive an ultrasound-guided pericapsular nerve group (PENG) block using 20mL of bupivacaine 0.25%.
Degree of pain
Each patient will be instructed about postoperative pain assessment with visual analog scale (VAS). VAS (0 represents "no pain" while 10 represents "the worst pain imaginable")
Total morphine consumption
Rescue analgesia of morphine will be given as 3 mg bolus if the VAS \> 3 to be repeated after 30 min if pain persists until the visual analog scale (VAS) \< 4. VAS will be assessed at post-anesthesia care unit (PACU), 2, 4, 6, 12, 24, and 48 h postoperatively.
Time to the first rescue analgesia
Time to the first request for the rescue analgesia will be recorded from the end of block to first dose of morphine administrated.
Time to ambulation
Time to ambulation will be recorded from the end of surgery to the first successful mobilization of the patient, defined as the ability to stand and walk at least 3-5 steps with or without assistance.
Length of hospital stay
Length of hospital stay will be recorded from admission till the discharge from hospital.
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