Objective To observe the effect and side effects of same concentraion ropivacaine,L-bupivacaine,bupivacaine on senile patients with hip joint operation by extradural blockage anesthesia.

• 目的观察相同浓度罗比卡因、左布比卡因、布比卡因用于老年患者髋关节手术硬膜外阻滞的效果和副作用。