You may experience some pain and mild swelling in your leg after the knee replacement. Elevation of the leg, wearing a compression hose and applying ice pack for 15 to 20 minutes at a time will help to reduce the swelling. You may be permitted to take continuous passive movement exerciser (CPM) machine home with you for few weeks to encourage knee bending. While you can expect some good days and some bad days, you should notice gradual improvement and gradual increase in your endurance over the next 6 to 12 months. Swelling is normal for first three to six months after surgery elevate your legs slightly and apply ice.