Inclusion Criteria:  1 Patients aged 19 years old or older, with American Society of Anesthesiologists Physical Status 1-3, and scheduled for elective shoulder arthroplasty  Exclusion Criteria:  Allergy or intolerance to any of the drugs used in the study Heart failure Hepatic or renal insufficiency Opioid dependency Coagulopathy Pre-existing neurologic or anatomic deficits in the upper extremities Severe psychiatric illness