 The purpose of this study is to determine if an additional injection of local anesthetic immediately prior to removal of the local anesthetic infiltration catheter on postoperative day one is effective in increasing pain reduction, patient satisfaction or outcome measures following total knee replacement TKR. It is hypothesized that an additional injection of 30ml of .5 bupivacaine solution immediately before infiltration catheter removal will provide pain reduction, patient satisfaction and outcome measures equal or superior to catheter removal with no additional injection. 