Patients randomized to the treatment group will receive regional nerve blocks (sciatic and femoral) with bupivacaine at the dose of 1 mg/kg. The anesthesiologists are experts in pain management, and they are trained to perform regional nerve blocks. Femoral and sciatic nerve blocks are within their scope of practice, and they have been performing them quite frequently especially in orthopedic operations. Patients randomized to the control group will receive two needle sticks (in the sciatic and femoral distributions) with normal saline to maintain the double-blinded investigation. The anesthesiologists are not blinded in this study, and they will be able to provide the appropriate billing for the saline and the bupivacaine injections.