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  • Dear Management: I have a great fear of Anaesthesia and operations in general. I was, however, surprised by the professional way I was treated by everyone at your hospital. If I ever need another operation, I will demand to have it done at the Zuid-Afrikaans Hospital. You can be proud of your staff, doctors and anaesthetists. Well done!

    - Mr. T. Stoffberg

News & Events

ZAH is the first to use new technology for knees

12 May 2011

All total knee implants consist of three main parts; a plastic insert positioned between two metal components. Over time, the movement of the metal component sliding against the plastic insert can wear down the plastic. In some cases, tiny particles of the plastic can accumulate in the joint resulting in a condition known as osteolysis, or the softening of the bone around the joint. When this happens, the implant may loosen, which leads to pain and instability in the joint.

Therefore in the past, orthopaedic surgeons have cautioned knee replacement patients that their implant can fail after years of use, and if that happens, it has to be revised.  While that message is still true, the likelihood of a patient’s knee implant failing due to normal wear has been dramatically reduced thanks to VERILAST™ Knee Technology

Unlike other knee implants, made from cobalt chrome metal and a high-density plastic, VERILAST™ Technology is made from a proprietary metal alloy called OXINIUM™ Oxidized Zirconium and a highly cross-linked polyethylene - a combination of remarkable materials that were tested to simulate 30 years of wear performance. That’s more than twice the length of testing of knee replacements made from traditional materials.

It’s hypoallergenic – OXINIUM™ contains virtually no nickel or chromium; two metals that can cause problems for patients who have metal sensitivity.

Knee replacement surgery is intended to relieve knee pain and improve knee function. There are potential risks with knee replacement surgery such as loosening, dislocation, and infection that may result in the need for additional surgery, but at least with VERILAST™  technology the risk of failure due to wear of the plastic has been eliminated.

Written by: Angela Busch

Back to News & Events posted on 12 May 2011