Comparison of Deep Subgluteal Block and Pericapsular Nerve Group Block Combined With Lateral Femoral Cutaneous Nerve Block for Postoperative Analgesia After Hip Arthroplasty: A Randomized Prospective Study
This randomized, prospective study aims to compare the clinical efficacy of ultrasound-guided Deep Subgluteal Block (DSGB) versus Pericapsular Nerve Group (PENG) block combined with Lateral Femoral Cutaneous Nerve (LFCN) block for postoperative analgesia management in patients undergoing hip arthroplasty. A total of 60 patients scheduled for hip arthroplasty under general anesthesia will be randomly allocated into two equal groups of 30: Group DSG and Group PENG+LFCN. Total local anesthetic volume (30 mL) and active drug dose (75 mg bupivacaine) will be standardized across both groups to ensure rigorous blinding and high methodological quality. The primary outcome of the study is to compare total postoperative opioid (fentanyl) consumption within the first 24 hours. Secondary outcomes include postoperative pain scores evaluated via the Numerical Rating Scale (NRS) at rest and during movement, the presence and degree of quadriceps motor block, and opioid-related adverse effects (e.g., nausea, vomiting, pruritus).
• Patients scheduled for elective total or partial hip arthroplasty under general anesthesia
• American Society of Anesthesiologists (ASA) physical status I-III
• Aged between 18 and 80 years
• Able to understand the study procedures, give voluntary written informed consent, and operate a patient-controlled analgesia (PCA) device