This article covers the details of knee prosthesis surgery, including the types of prostheses (total and partial), when surgery is recommended, and the typical duration of the procedure. It outlines the surgery steps, which last between 40 to 90 minutes, depending on the implant type. Modern prostheses last over 20 years in most patients, providing a long-term solution for osteoarthritis. Regular check-ups ensure the prosthesis remains in good condition over time.