Hamilton GM, et al. - Using linked health administrative data, researchers carried out a retrospective cohort study in Ontario, Canada (2011 to 2015) to explore the connection between peripheral nerve blocks and outcomes after hip fracture surgery. To determine the relationship of nerve blocks with resource use and outcomes, multilevel regression, instrumental variable, and propensity scores were employed. Sixty-five thousand two hundred seventy-one hip fracture surgery patients were identified; 10,030 received a block. According to findings, peripheral nerve blocks can be linked to slightly reduced postoperative lengths of stay and health system costs among elderly patients undergoing emergency hip fracture surgery in Ontario, Canada. There was no difference in postoperative pneumonia rates associated with the use of peripheral nerve blocks.