Study Objectives The intraoperative periarticular injection of 300 mg of 0.5% ropivacaine, 30 mg ketorolac, 200 mcg epinephrine, and 100 mcg clonidine in a 100 mL 0.9% saline solution will be compared to an injection of 30 mL of a 0.25% solution bupivacaine with ORA: 15101602-IRB01 Date IRB Approved: 3/16/2016 epinephrine and 30 mL 0.25% bupivacaine without epinephrine as an intraoperative periarticular joint injection protocol. The study's data collection timeline begins at the pre-operative clinic visit. Data collection continues through the patient's discharge after the surgical procedure and until the first year postoperative visit examination of joint range of motion and patient satisfaction questionnaires.