Total Knee Replacement
Total Knee Replacement (TKR), also known as total knee arthroplasty, is a surgical procedure where a damaged or diseased knee joint is replaced with an artificial implant, or prosthesis. This procedure is commonly performed to relieve pain and improve joint function in individuals with severe knee arthritis or other degenerative conditions affecting the knee.
The artificial knee joint, or prosthesis, typically consists of several components:
1. Femoral Component: This part is designed to replace the distal end of the femur (thigh bone). It typically includes a metal component that fits into the condylar portion of the femur
2. Tibial Base Plate: This component is intended to replace the top surface of the tibia (shinbone). It usually consists of a metal base plate that is fixed to the tibia.
3. Polyethylene Insert: Acting as a substitute for cartilage, the polyethylene insert is placed between the femoral and tibial components. This insert allows for smooth movement and cushioning similar to the natural knee joint.
4. Patellar Component: The patella (kneecap) component is designed to replace the surface of the patella. It mimics the function of the original patella in the knee joint.
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These components work together to restore joint function and alleviate pain. The choice of materials for these components, such as metal, ceramic, or polyethylene, is based on their compatibility with the human body, durability, and ability to facilitate painless and lasting function. The goal of TKR is to provide patients with an improved range of motion, enhanced joint stability, and a reduction in pain, ultimately allowing them to resume normal activities with increased comfort and mobility. It's important to note that while TKR is a highly effective and common procedure, it is typically recommended for individuals with severe knee joint damage that hasn't responded well to conservative treatments. The decision to undergo TKR is usually made after a thorough evaluation by a healthcare professional, considering factors such as the patient's overall health, lifestyle, and the extent of joint damage.