In the current study, in 40 patients with ASA I-II preoperative health status undergoing arthroscopic surgery; onset, length, duration of motor and sensory block, two segment regression time, postoperative first analgesic requirement and side effects of bupivacaine and ropivacaine on epidural anesthesia have been compared. Patients were into two equal groups randomly. Group R received 15 mL 0.5% ropivacaine, Group B received 15 mL 0.5% bupivacaine for epidural anesthesia. The groups were similar with respect of demographic proporties, Mean Arterial Pressures (MAP), Heart Rate (HR) and ASA. In both groups, onset of sensory block sufficient enough for surgery was found to be similar (Group R 16.7 min, Group B 19.2 min). Time elapsed for two segment sensory regression and total sensory regression for both groups were also similar, but total sensory regression in Group B is found to be aproximately 65 min later than in Group R, but this had statistical significance (Grup B min 286.2 min, Grup R 220.6 min) (p = 0.004). In lower extremities, motor block regression time was significantly longer in group B than in group R (p<0.001). We concluded that, ropivacaine which have similar properties with rasemic bupivacaine had shorter sensory block time and motor block removal time which allowed enough motor and sensory block for arthroscopic surgery with more safety and less side effect.