What Is Knee Replacement Surgery?

Knee replacement surgery is a procedure in which a damaged or worn-out knee joint is replaced with an artificial implant. It is most commonly performed to relieve chronic pain and restore mobility in people suffering from severe arthritis or major knee injury.

Why Is Knee Replacement Needed?

The knee joint is formed where the thigh bone (femur), shin bone (tibia), and kneecap (patella) meet. Over time, cartilage that cushions these bones can wear away, causing:

• Severe pain
• Stiffness
• Swelling
• Reduced movement
• Difficulty walking or climbing stairs

The most common cause is osteoarthritis, but other conditions may also lead to knee damage.

Common Reasons for Knee Replacement

• Advanced osteoarthritis
• Rheumatoid arthritis
• Post-traumatic arthritis
• Severe knee deformity
• Chronic knee instability

Types of Knee Replacement Surgery

• 1. Total Knee Replacement (TKR) In a Total Knee Replacement, the entire knee joint surface is replaced with metal and plastic components. This is the most common type and is recommended for severe joint damage.
• 2. Partial Knee Replacement (PKR) In a Partial Knee Replacement, only the damaged portion of the knee is replaced. It is suitable when arthritis affects just one compartment of the knee.
• 3. Revision Knee Replacement A second surgery performed when a previous knee replacement fails or wears out.

How Does the Procedure Work?

Who Is a Good Candidate?
You may be a candidate if you have:

• Severe knee pain even at rest
• Limited mobility affecting daily life
• Knee deformity
• Failure of non-surgical treatments
• Advanced arthritis