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To compare pain scores (visual analog scale) on postoperative days 1-3 and length of stay after implementing enhanced recovery after surgery (ERAS) in elderly patients undergoing multi-segments lumbar fusion surgery. We performed a retrospective analysis of prospectively collected data, patients older than 75 years were enrolled in the study. We selected two periods, before (Pre-ERAS, n =54 patients) and after (ERAS, n =46 patients) implementation of ERAS. Data were collected on patient demographics, operative and perioperative details,