Walking helps build a more normal, comfortable stride. It also keeps you in shape and helps prevent blood clots. Start by taking three or four short walks every day. Over time, increase how far, how long, and how many times a day you walk. After your walk, lie down, elevate your knee, and ice it to ease swelling. Your healthcare provider or physical therapist will tell you when and where to use your walker, crutches, or cane. He or she will also let you know when you can stop using them.