80 patients requiring total knee arthroplasty (TKA) were randomized to receive one of two treatments for managing postoperative TKA pain. One group received a periarticular injection of analgesic followed by intra-articular bolus injections, and the other group underwent a continuous femoral nerve block (a standard treatment for postoperative pain at the institution of study) followed by an infusion of a local anaesthetic. Results showed that the group receiving a periarticular injection of analgesics followed by bolus injections had lower pain scores and better mobilization compared to the group receiving the continuous nerve block treatment.