The complete recovery period for a knee replacement operation generally takes 3 to 12 months after surgery, as stated by Healthline. Postoperative hospitalization is usually required, which may take 1 to 4 days based on the patient's recovery speed, according to the American Academy of Orthopaedic Surgeons.
Knee replacement is an invasive procedure performed on patients suffering from severe arthritis or serious knee damage, as explained by Johns Hopkins Medicine. Depending upon the results of the surgery, a patient may be discharged and allowed to recuperate at home or sent to a rehabilitation center if certain complications arise.
Physical therapy usually starts the day after surgery. It is strongly recommended for patients to begin moving and using the operated knee immediately. Although it typically takes 3 months to a year to fully heal, patients who actively engage in the prescribed rehabilitation course can experience a faster recovery period.