It takes four to six weeks after knee replacement surgery for most people to resume normal activities, according to Mayo Clinic. Most people are able to begin driving again after about four weeks, provided they have sufficient muscle control and strength.
Knee replacement surgery reduces the pain of the damaged knee and improves the quality of life for most people, reports Mayo Clinic. The procedure improves mobility and allows the person to take part in many low-impact activities. However, the new joint cannot withstand high-impact exercises such as running, tennis or skiing. Individuals should also avoid contact sports; however, low-impact activities such as swimming, walking, biking and golfing are good choices after the replacement heals.