 Data collection includes total preoperative, intraoperative fentanyl and total post- operative hydromorphone. Data collection concludes when the patient has met PACU discharge criteria or 2 hours after arousal, whichever is sooner. Time of PACU admission and when the patient has met PACU discharge criteria is recorded. Any supplementary local anesthetics or analgesia will also be noted. Prior to PACU discharge, a blinded assessor will assess the patient for any reduced sensation to cold in the distribution of the radial, ulnar, median nerves in the hand and musculocutaneous nerve in the arm as well as the motor integrity of the 4 said nerves. Patient grip strength will be measured on the surgical and contralateral sides with a grip dynamometer. Three iterations of measurements will be taken prior to the nerve block procedure and again when the patient is ready for discharge from PACU. 