Knee replacement, or arthroplasty, is a very common surgery. More than 600,000 of these procedures are performed every year in the United States, and it is considered one of the most successful and life-enhancing surgical procedures today. However, these results are not seen instantly. Rather, they develop gradually during the weeks and months following joint replacement surgery. If you will be having this procedure, learning what to expect during this time can help make the recovery process easier and less stressful.