The fascia iliaca compartment block (FICB) is a regional block that anesthetizes the femoral, obturator, and lateral femoral cutaneous nerves around the hip. The purpose of this study is to determine whether FICB can reduce postoperative pain and increase progress with physical therapy after total hip arthroplasty (THA). This randomized, double-blind, clinical trial will randomize patients to receive either a FICB or placebo after THA. The primary outcomes will be pain scores reported by the patient post-operatively.