In Knee Replacement surgery (Arthroplasty) a damaged, worn or diseased knee is replaced with an artificial joint.

Knee Replacement is a routine operation for knee pain when the knee joint has been severely damaged, most commonly by arthritis.

There are two main types of surgery, depending on the condition of the knee: Total Knee Replacement and Half (Partial) Knee Replacement.

Knee Replacement surgery (Arthroplasty) is usually necessary when a health condition or injury disrupts the normal working of the knee joint so that:

• your mobility is severely reduced.
• you experience pain even while resting.

Modern knee replacements involve removing the worn ends of the bones in your knee joint and replacing them with metal and plastic parts (a prosthesis).

You may have either a 'total' or a 'half-knee' replacement. This will depend on how damaged your knee is.
Total knee replacements are the most common.

Total Knee Replacement
In a total knee replacement, both sides of your knee joint are replaced.

Partial (Half) Knee Replacement / Unicompartmental Knee Replacement
If only one side of your knee is damaged, you may be able to have a partial, half-knee or unicompartmental replacement.

Kneecap replacement
If just your kneecap is damaged, an operation called a Patellofemoral Replacement or Patellofemoral Joint Arthroplasty can be performed