Average recovery time following the insertion of a knee prosthetic is 12 weeks, according to Healthline. However, it can take up to a year before all pain and other symptoms caused by knee replacement have subsided and patients feel 100 percent again.
Recovery goals following knee replacement or prosthetic knee surgery are to get the patient back to an active lifestyle. Rehabilitation is important to ensure long-term success following the the surgery. Rehabilitation generally begins almost immediately following the surgery. Within the first day, doctors recommend getting up and walking with the help of a physical therapist and device such as a cane or walker.
Before discharge following knee surgery, patients are expected to be able to get up and walk with the help of an assistive device, walk up to 25 feet and go up and down stairs with the help of crutches or a walker. They should also be able to achieve a 90-degree range with the knee in order to stand or sit. The patient should also understand suggested activities and exercises.
By the end of the 11th week following surgery, range of motion should be improved to 115 degrees, and there should be dramatically less pain and stiffness. Strength in the knee should be improved, and the patient should be able to return to most daily activities.