A lot of factors play into how quickly you can recover from a knee replacement. These factors include your genetics, your overall health, current activity level, severity of the knee problem before surgery, and the complexity of the procedure.
After surgery, patients immediately start walking. Patients walk out of the hospital on their own! The first 2 weeks is getting used to the new knees and reactivating muscles that haven’t likely been used normally for years. Swelling and stiffness are the biggest hurdles in the beginning. Most patients are able to care for themselves and resume normal daily activities within 2-3 weeks. Driving is usually resumed within 3 to 6 weeks. Stamina, endurance and strength continue to improve for months after the surgery. A complete recovery for a knee replacement can be expected to take anywhere from 3-12 months depending on how active the patient is, and how aggressively and consistently they work on rehabilitation.