To compare the anaesthetic effectiveness and safety of ropivacaine 0.75% with bupivacaine 0.5% for spinal anaesthesia in patients having lower limb orthopedic surgery. CMHH [Internet]. 2025 Nov. 11 [cited 2026 Nov. 2];1(1):25-30. Available from: https://umedpress.com/index.php/CMHH/article/view/25