 Materials Methods A total of 55 ASA I-II patients underwent hand surgery operation by administering USG guided-axillary brachial plexus blockage were included in the study. Ulnar, median and radial nerves were seen and the minimum effective local anesthetic volume was investigated starting with total 21 ml of 0.5 bupivacain. After accomplishing the blockage, volume was decreased by 0.5 for each nerves. Block administration time, block onset times, anesthesia times and time to first analgesic requirement were recorded. 