Comparison of Pericapsular Nerve Group and Lateral Quadratus Lumborum Blocks for Analgesia after Primary Total Hip Arthroplasty: A Randomized Controlled Trial.

Introduction: The quadratus lumborum block (QLB) and the pericapsular nerve group (PENG) block both provide effective postoperative analgesia after hip surgery while minimizing impact on motor function. This study aimed to compare QLB and PENG in patients undergoing primary total hip arthroplasty.

Methods: This superiority trial randomized patients scheduled for elective total hip arthroplasty to receive a lateral QLB or PENG with lateral femoral cutaneous nerve blocks for postoperative analgesia.