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Modern knee and hip prosthesis made by cad engineer and manufactured by 3d printing

A knee prosthesis, also known as a knee implant, is a medical device designed to replace a damaged or dysfunctional knee joint. It is used in individuals who have experienced severe knee joint deterioration or injury due to conditions such as osteoarthritis, rheumatoid arthritis, trauma, or other degenerative diseases.

Knee

A knee prosthesis, also known as a knee implant, is a medical device designed to replace a damaged or dysfunctional knee joint. It is used in individuals who have experienced severe knee joint deterioration or injury due to conditions such as osteoarthritis, rheumatoid arthritis, trauma, or other degenerative diseases.

A knee prosthesis consists of several components that mimic the natural structure and movement of the knee joint. The main components typically include:

  1. Femoral Component: This component is made of metal (such as cobalt-chromium alloy or titanium) and replaces the lower end of the thighbone (femur). It has a contoured shape to match the natural curvature of the bone.

  2. Tibial Component: The tibial component is made of metal or high-grade plastic (polyethylene). It replaces the upper surface of the shinbone (tibia). It typically consists of a flat metal plate with a polyethylene insert to provide smooth articulation with the femoral component.

  3. Patellar Component: The patellar component is optional and is used when the kneecap (patella) is severely damaged. It is a dome-shaped piece made of plastic or a combination of plastic and metal. It replaces the surface of the patella that comes in contact with the femoral component.

These components are designed to replicate the natural movement of the knee joint, allowing for smooth flexion (bending) and extension (straightening) of the leg. They are attached to the bone using cement or through a press-fit technique that allows for bone ingrowth and long-term stability.

Knee prostheses come in various designs and sizes to accommodate different patient anatomies and requirements. Surgeons carefully select the appropriate prosthesis based on factors such as the patient’s age, activity level, overall health, and specific condition being treated.

The aim of a knee prosthesis is to relieve pain, restore mobility, and improve the overall quality of life for individuals with severe knee joint dysfunction. Rehabilitation and physical therapy are typically recommended after knee replacement surgery to help patients regain strength, flexibility, and function in their new knee joint.

It’s important to note that specific details and variations of knee prostheses may exist depending on the manufacturer and advancements in medical technology. Consulting with an orthopedic surgeon or healthcare professional can provide you with more precise and up-to-date information about knee prostheses.

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