This prospective randomized controlled study is aimed to determine the advantages of post-admission fascia iliaca compartment block (FICB) in geriatric hip fracture surgery combination with multimodal analgesia compared with no post-admission FICB. The primary outcome is incidence of delirium during hospital admission. Secondary outcomes are incidence of delirium at hospital discharge, pre- and post-operative pain intensity, peri-operative complications, opioid-related side effects, post-operative complications and length of hospital stay, and morbidities and mortality (in-hospital and 30 days).