Subjects that meet the inclusion criteria will be assigned a group by using a random numbers generator. All subjects will receive the standard practice at our institution of an interscalene brachial plexus block along with a general anesthetic. The intervention arm will get an additional local anesthetic block targeting nerves that we presume cover the axillary region (PECS "Pectoralis" 1 & 2). These nerves in the upper chest are the lateral branches of the 2nd to 5th intercostal nerves, which includes the intercostobrachial nerve. The anesthesiologist placing the nerve blocks will be un-blinded to perform the procedures. Both the surgeon and the Acute Pain Service anesthesiologist will be blinded as to whether or not the intervention was provided to any given subject. The Acute Pain Service team will remain blinded and collect the data outcomes.