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Implantable prostheses designed to replace the distal surface of the femur at the articulation point. These prostheses provide a partial substitution of the knee articulation; they typically consist of a metal cap that is anchored in the femur at one side with the opposite, convex side facing the articulation point. Femoral component joint prostheses may be anchored in the bone using orthopedic cement (e.g., epoxy); in procedures that do not use cement, the prosthesis is pushed onto the end of the previously tapered femur and held in place by friction. They are mainly used in patients who suffer from osteoarthritis or rheumatoid arthritis, as well as after trauma (e.g., fracture).
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