There are many options for knee surgery. The most common include: - Total Knee Replacement: A total knee replacement is one of the most common surgical procedures performed on the knee. After removing the cartilage from the femur and tibia bone, the surgeon will replace this cartilage with a specialized prosthetic device made of a plastic material. If the patella is not damaged, the doctor may decide to keep it; however, it is only possible to know the condition of the patella after making an incision on the knee. - Unicompartmental (Partial) Knee Replacement: In simplest terms, the knee joint is composed of the inner part, the outer part, and the knee cap (patella). If arthritis has affected only one part of the joint, such as the inner or outer part, the surgeon may recommend this surgery as there is no need to make a large incision and replace the entire joint. - Kneecap Replacement (Patellofemoral Arthroplasty): In patellofemoral arthroplasty, the surgeon replaces the lower part of the knee cap. This type of procedure is suitable for people who have arthritis in the knee that only exists under the knee cap. A big advantage of this surgery is that there is no need to replace the complete knee structure, reducing recovery time and potential risks. - Complex or Revision Knee Replacement: Suitable for people with severe arthritis, complex knee replacement surgery requires surgeons to arrange specialized prosthetic parts with the bigger stem, meaning that the prosthetic cartilage will firmly adhere to the bone.