Sensory and motor block levels were evaluated in the median, radial, ulnar and musculocutaneous nerve traces at 5-minute intervals for 30 minutes. An ice pack was used for sensory block evaluation. It was scored as follows; 0: completely felt; 1: has a sense of touch; no cold; 2: no sense of touch. Lateral surface of the forearm for the musculocutaneous nerve, the surface of the thumb facing the palm for the median nerve, the inner surface of the 5th finger for the ulnar nerve, and the posterior surface of the hand for the radial nerve were used for sensorial evaluation. Motor block was scored as follows; 0: full motion; 1: paresis; 2: complete block. Elbow flexion for the musculocutaneous nerve, thumb opposition for the median nerve, 5th finger abduction for the ulnar nerve, and wrist extension for the radial nerve were used to evaluate motor block. The block was considered successful if the total score was 14 or higher, with a total sensory score of at least 7.