FICB for Hip Fracture Pain in Elderly

Inclusion Criteria: * Age ≥ 65 years * Diagnosis of unilateral hip fracture (including femoral neck fracture or intertrochanteric fracture) confirmed by any imaging modality (X-ray, CT, or MRI) * Scheduled for hip fracture surgery under general anesthesia with endotracheal intubation (including total hip arthroplasty, hemiarthroplasty, intertrochanteric intramedullary nail fixation, closed reduction and internal fixation, etc.) * American Society of Anesthesiologists (ASA) physical status classification I-III * Able to provide written informed consent personally or via a legally authorized representative * Able to communicate normally in Chinese Exclusion Criteria: * Known allergy to ropivacaine, bupivacaine, or liposomal bupivacaine * Presence of any contraindication to nerve block, including but not limited to: nerve injury, coagulopathy, severe infection at the injection site, exudate at the injection site, etc. * Pre-existing psychiatric or neurological disorders, including but not limited to: depression, severe central nervous system depression, Parkinson's disease, basal ganglia lesions, schizophrenia, epilepsy, Alzheimer's disease, myasthenia gravis * Pre-existing severe cardiac, pulmonary, hepatic, or renal dysfunction, including but not limited to: history of heart failure, requiring dialysis, etc. * Inability to communicate preoperatively (e.g., coma, dementia) * Preoperative pain score \< 4 on Visual Analog Scale (VAS) or chronic/old hip fracture * Currently participating in another interventional clinical trial * Any other condition that, in the opinion of the investigator, would preclude evaluation of the therapeutic response or make it unlikely that the patient will complete the expected treatment course and follow-up