Pericapsular Nerve Group With Lateral Femoral Cutaneous Nerve Block vs Suprainguinal Fascia Iliaca Block for Analgesia in Total Hip Arthroplasty: A Prospective Comparative Study

Comparison of Postoperative Analgesic Efficacy of Suprainguinal Fascia Iliaca Block (SFIB) and Pericapsular Nerve Group (PENG) Block With Lateral Femoral Cutaneous Nerve (LFCN) Block in Patients Undergoing Total Hip Arthroplasty

Prospective observational cohort comparing analgesic efficacy of suprainguinal fascia iliaca block (SFIB) vs pericapsular nerve group block combined with lateral femoral cutaneous nerve block (PENG+LFCN) in primary total hip arthroplasty under general anesthesia (n=48). Outcomes include VAS pain at rest and with movement at 3, 12, 24, 48 h; morphine use (0-3, 3-12, 12-24, 24-48 h; total 0-48 h); quadriceps strength at 6 and 24 h; physiotherapy participation at 24 and 48 h; and adverse events within 48 h.

Adults undergoing primary posterolateral THA under general anesthesia were included if they received either SFIB or PENG+LFCN. Pain (VAS at rest and with 45° passive flexion) was recorded at 3, 12, 24, and 48 h. Morphine via PCA was recorded for 0-3, 3-12, 12-24, and 24-48 h, with a 0-48 h total. Quadriceps strength (0-2 scale) was assessed at 6 and 24 h; physiotherapy participation at 24 and 48 h; opioid- or block-related adverse events through 48 h.

Inclusion Criteria:

• Patients who are scheduled to undergo primary total hip arthroplasty with a diagnosis of coxarthosis

Exclusion Criteria:

• Patients who have a history of neuropathy, patients with renal and hepatic insufficiency, patients with known coagulopathy, patients with a history of allergy to local anesthetics, patients with a history of inguinal surgery on the same side and patients with impaired mental status