Recovery time for a total knee replacement varies by individual, but most people are able to resume a wide range of activities six weeks following surgery, according to NHS Choices. Swelling and pain may take between two and three months to subside.
Some patients are able to walk the day of surgery, states NHS Choices. This is true for those with minimally invasive procedures or those who are on an enhanced recovery program. Most patients can stand within 12 to 24 hours after the surgery, although a hospital stay between three and five days is usually required. During the hospital stay, a physiotherapist teaches the patient how to properly exercise and rehab the surgically repaired knee.