Total Knee Replacement Surgery
What is a total knee replacement?
A total knee replacement is a surgical procedure where the diseased knee joint bone and cartilage is replaced with artificial material. The knee joint is formed by the lower end of the femur (thigh bone) and the upper end of the tibia (lower leg bone). During a total knee replacement, the end of the femur bone is removed and replaced with a metal cap (bone cement is used to hold the metal cap in place).
The end of the lower leg bone (tibia) is also removed and replaced with a tibial tray (bone cement is used to hold the metal tibial tray in place). A plastic (highly crossed-linked polyethylene - HCLPE) component is clipped onto the tibial tray and will serve as an articulating surface between the femoral metal cap and the tibial tray. If the patella (knee cap) cartilage is also significantly damaged a plastic button (HCLPE) is used to replace the diseased cartilage.
What patients should consider a total knee replacement?
Total knee replacement surgery is considered for patients whose knee joint cartilage and bone have been damaged by osteoarthritis.
Osteoarthritis of the knee may be caused by advanced age (wear and tear) or some patients may have a genetic predisposition to osteoarthritis. This is called primary osteoarthritis.
Osteoarthritis may also be caused secondarily by other conditions such as trauma, infections, avascular necrosis, knee ligament insufficiencies and inflammatory arthritis (such as gout and rheumatoid arthritis).
When the osteoarthritis, no matter what the cause, results in progressive knee pain affecting the patients quality of life and function, the patient may be a candidate for a knee replacement. Pain is the single most important indication for surgery. Other less important indications are knee deformities and knee stiffness.
- Hip Replacement Surgery
- What is total hip replacement?
- Who is a candidate for total hip replacement?
- What are total hip replacement complications?
- What preparation is needed for the procedure?
- What will recovery be like for the patient after surgery?
- What is involved in the rehabilitation process after total hip joint replacement?
- What other postoperative instructions are given to patients with total hip joint replacements?
- What is the prognosis of total hip joint replacement?
- Knee Replacement Surgery
- What is a total knee replacement?
- What patients should consider a total knee replacement?
- What are the risks of undergoing a total knee replacement?
- What is involved with the preoperative evaluation for total knee replacement?
- What happens in the postoperative period? What is involved in the recovery from surgery?
- How does the patient continue to improve as an outpatient after discharge from the hospital? What are recommended exercises?
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