Comparison of Three Different Concentrations 0.2%, 0.5%, and 0.75% Epidural Ropivacaine for Postoperative Analgesia in Lower Limb Orthopedic Surgery.

Comparison of Three Different Concentrations 0.2%, 0.5%, and 0.75% Epidural Ropivacaine for Postoperative Analgesia in Lower Limb Orthopedic Surgery.