In postoperative period, MRJB is left in place for 24 hours and then changed to NCD. All participants obtain the three-hour interval drain clamping protocol. After tourniquet release, the drain is clamped for three hours, released for three hours, re-clamped for three hours, and then the clamp is run continuously. Mechanical prophylaxis of deep vein thrombosis by ankle pumping exercise and ambulation on the bed is started as soon as possible. After 24 hours postoperatively, range of motion exercise and out-of-bed ambulation program are started. Ice packs are placed around the knee for at least 8 hours per day. The drain is removed at 48 hours after operation.