Peridural Anesthesia or Ultrasound-Guided Continuous 3-in-1 Block

34 very elderly patients with hip fractures (excluding patients with dementia)

Ultrasound-guided continuous 3-in-1 block with bupivacaine

Epidural anesthesia (PDA) with bupivacaine OR systemic pain therapy with piritramide/paracetamol

Pain intensity assessed preoperatively and up to 24 hours postoperatively using visual analog scale, verbal rating scale, analgesic consumption, scale of well-being, and cardiocirculatory parameters (e.g., serum troponin T)patient reported