Comparison of Pericapsular Nerve Group+ Lateral Femoral Cutaneous Nerve Block Versus Lumbar Erector Spinae Plane Block in Hip Arthroplasty Surgery

Hip replacement surgery (partial or total hip arthroplasty) is commonly performed in elderly patients and is associated with significant postoperative pain. Effective pain management is critical to support early mobilization, reduce complications, shorten hospital stay, and prevent postoperative delirium.This observational study evaluates the effect of two ultrasound-guided regional analgesia approaches on postoperative pain and recovery quality in patients aged 65 years and older undergoing hip arthroplasty under general anesthesia: Group 1: Pericapsular Nerve Group (PENG) block + Lateral Femoral Cutaneous Nerve (LFCN) block Group 2: PENG block + Lumbar Erector Spinae Plane (ESP) block Both techniques are applied as part of routine clinical practice at our institution. The primary outcome is quality of recovery assessed by the QoR-15 questionnaire at 24 hours after surgery. Secondary outcomes include postoperative opioid consumption, pain scores (NRS), incidence of postoperative delirium (NU-DESC), nausea and vomiting, and time to mobilization. Patients are also followed up by telephone at postoperative day 7 and day 30 for mortality and morbidity assessment.