Total knee replacement surgery typically lasts anywhere from one to two hours, according to Hospital for Special Surgery. Following surgery, the patient spends three to four hours in a recovery room before transferring to a regular room. The total time spent in the hospital is three to four days.
Physical therapy commences in the hospital, usually on the day of the surgery, as stated by Hospital for Special Surgery. Some patients stay in rehabilitation facilities for a short while after their surgeries, while others receive physical therapy in their homes. Patients can usually walk normally by six weeks after the surgery, and can resume most regular activities at the 12-week mark.