40 patients undergoing total hip replacement (THR) surgery were randomized into two groups to examine the outcomes of pain and postoperative requirement for analgesia. Both groups received wound infiltration at the end of surgery as well as through an intraarticular catheter 24 hours postoperatively, and both were blinded to treatment. The intervention group received a solution of ketorolac, ropivacaine and adrenaline, while the control group received a saline solution. Results showed that the intervention group had less pain up to 2-weeks postoperatively and were more satisfied compared to the control group. Patients receiving the analgesic also had less joint stiffness and better function at 1 week postoperatively.