“…Two trials directly compared different anatomic approaches of QLB. 45,53 The comparators used were placebo, 13,17,22,[29][30][31]33,34,36,37,39,40,46,48,50 no block, 18,19,23,24,28,43,47,49,51,52 other RA techniques (TAP block, 12,14,20,21,27,35,38,41,42,44 femoral nerve block, 25 fascia iliaca block, 16 erector spinae [ESP] block, 52 epidural analgesia, 26 and intrathecal morphine [ITM]), 15,39,50,53 and systemic analgesia techniques (lidocaine infusion 32 and paracetamol infusion 20 ).…”