Rehabilitation after a typical knee surgery, such as knee replacement, usually takes about one to two months, WebMD reports. However, most knee replacement patients are upright and walking within days after surgery.
A person can typically stand upright the day after knee replacement surgery, WebMD explains. Walking assistance devices are necessary in the period immediately following surgery, but patients are typically able to walk comfortably within six weeks. Most patients are not sent to a rehabilitation facility after knee surgery, but for those who are, the expected stay is about a week or slightly longer. In some cases, outpatient therapy is recommended for one to two months after surgery, and all patients are advised to avoid overexertion of the knee until the recovery process is complete.