VERILAST◊ Technology for hips is now offering patients new levels of both wear performance and durability. VERILAST Technology combines two advanced, wear-reducing materials: Smith & Nephew’s award-winning OXINIUM Oxidized Zirconium, a ceramicised metal alloy, and a “cross- linked” plastic component (XLPE). The combination of the two; the ceramicised metal ball (femoral head) and the XLPE liner make up VERILAST Technology for hips.
OXINIUM◊ is a metal alloy (made primarily of zirconium) that undergoes a heating process that transforms the surface into a hard, smooth ceramic - while retaining all of the durability of the underlying metal.
XLPE is created by altering chemical bonds in the polyethylene to create a tighter weave at the molecular level, thus reducing the amount of wear experienced when the metal component rubs against it. You could think of it as fabric with a higher thread count.
Hip replacement implants
Total hip replacement implants are designed to help a patient get back as close as possible to the healthy, active lifestyle before hip pain limited the mobility. Almost all hip replacement implants have consisted of a three-part system:
- A hip stem, usually made from a biocompatible metal such as titanium, which is implanted down the shaft of the femur;
- A femoral head, made from either metal or ceramic, which sits on top of the hip stem and replaces the “ball” portion of the hip’s “ball and socket” design
- A hemispherical component made up of a metal shell and either a ceramic or plastic liner, which replaces the “socket” in which the femoral head sits.
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