PARTIAL KNEE REPLACEMENT

Partial Knee Replacement can be considered at any age

Partial Knee Replacement.

If Arthritis affects only one side of your knee – usually the inner side – it may be possible to have a Partial (Unicompartmental) Knee Replacement.

There are three compartments of the knee:
– the inner (medial), the outer (lateral) and the kneecap (patellofemoral).

If arthritis affects only one side of your knee – usually the inner side – it may be possible to have a half-knee replacement (sometimes called Unicompartmental or Partial Replacement). Because this involves less interference with the knee than a Total Knee Replacement it usually means a quicker recovery and better function.

Partial Knee Replacements can be carried out through a smaller cut (incision) than a total knee replacement, using techniques called reduced invasive or minimally invasive surgery. A smaller incision may further reduce the recovery time.

In order to be a candidate for Unicompartmental Knee Replacement, your Arthritis must be limited to one compartment of your knee.

In addition, if you have any of the following characteristics, you may not be eligible for the procedure:

• Inflammatory arthritis
• Significant knee stiffness
• Ligament damage

With proper patient selection, modern Unicompartmental Knee Replacements have demonstrated excellent medium- and long-term results in both younger and older patients.

Partial Knee Replacement patients usually experience less postoperative pain, less swelling, and have easier rehabilitation than patients undergoing Total Knee Replacement. In most cases, patients go home 1 to 3 days after the operation. Some patients go home the day of the surgery.

Research shows that people who have Partial Knee Replacements are more likely to have the knee revised than people who have a Total Knee Replacement. Even though the revision operation involves less interference with the knee it is often a more complex operation than total knee replacement.

Partial Knee Replacement can be considered at any age. For younger people, it offers the opportunity to preserve more bone, which is helpful if you need revision surgery at a later stage. For older people, Partial Knee Replacement is a less stressful operation with less pain and less risk of bleeding.

Partial Knee Replacement Frequently Asked Questions

1. What is the difference between partial knee replacement and total knee replacement?

There are 2 main types of surgery:
• total knee replacement – both sides of your knee joint are replaced
• partial (half) knee replacement – only 1 side of your joint is replaced in a smaller operation with a usually shorter hospital stay and recovery period

2. What are the potential advantages of partial knee replacement over total knee replacement?

Multiple studies show that a majority of patients who are appropriate candidates for the procedure have good results with unicompartmental knee replacement.
The potential advantages of partial knee replacement over total knee replacement include:
• Quicker recovery
• Less pain after surgery
• Less blood loss
Also, because the bone, cartilage, and ligaments in the healthy parts of the knee are kept, many patients report that a unicompartmental knee replacement feels more natural than a total knee replacement. A unicompartmental knee may also bend better.

3. What are the potential disadvantages of a partial knee replacement over total knee replacement?

The disadvantages of partial knee replacement compared with total knee replacement include:
• Slightly less predictable pain relief
• Potential need for more surgery. For example, a total knee replacement may be necessary in the future if arthritis develops in the parts of the knee that have not been replaced.
• Higher revision rate – studies have shown that partial knee replacements have a higher redo, or revision rate compared to total knee replacements

4. Am I a candidate for partial knee replacement?

If you have arthritis mainly in one compartment (area) of the knee then you may be a candidate for partial knee replacement. It is important to discuss your own personal circumstances with your surgeon so that you can make the right informed choice.