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

48 patients of American Society of Anesthesiologists physical status I-II between the age of 18 to 90 years who were scheduled to undergo primary Total hip arthroplasty with a diagnosis of coxarthrosis