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Total Knee Replacement

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Evolution of Total Knee Replacement

Total knee replacement surgeries have been performed since the late 1800’s and fortunately technology has continued to advance throughout the history of the procedure. Currently the most common material used for components are various metal alloys to include titanium, cobalt-chrome, and stainless steel as well as high grade plastics known as polymers.

Most systems consist of three parts, the femoral component which caps the endo of the femur, the tibial component which caps the top of the tibia, and the poly (short for polymer component) which rests between the tibial and femoral component and acts as the new cartilage or bearing surface. Many different companies produce components used in total knee replacement and all of the currently used implants have been extensively studied and approved to be safe for use by the Food and Drug Administration.

Regardless of the implant chosen by the surgeon, due to the improvements in technology and material properties throughout the history of total joint procedures, current implants are the best that we have ever had and demonstrate improved wear rates, longer success periods, higher success rates, more anatomic designs, and decreased need for revision surgery due to wear.

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