Total knee replacement, or total knee arthroplasty, is a surgical procedure in which parts of the knee joint are replaced with artificial parts (prostheses).
A normal knee functions as a hinge joint between the upper leg bone (femur) and the lower leg bones (tibia and fibula). The surfaces where these bones meet can become worn out over time, often due to arthritis or other conditions, which can cause pain and swelling.
REASONS FOR KNEE REPLACEMENT
Total knee replacement is one option to relieve pain and to restore function to an arthritic knee. The most common reason for knee replacement is that other treatments (weight loss, exercise/physical therapy, medicines, and injections) have failed to relieve arthritis-associated knee pain.
The goal of knee replacement is to relieve pain, improve quality of life, and maintain or improve knee function. The procedure is performed on people of all ages, with the exception of children, whose bones are still growing. It is important to have significant pain and/or disability prior to considering this procedure. Because the replacement parts can break down over time, and healthcare providers generally recommend delaying knee replacement until it is absolutely necessary.