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News

New vitamin E enhanced polymer extends orthopaedic implant lifetimes

Ticona : 29 October, 2007  (New Product)
Two new grades of ultrahigh molecular weight polyethylene (UHMWPE) that contain vitamin E (alpha-tocopherol) have been developed by Ticona.
The addition of this biocompatible antioxidant provides these new grades with effective oxidation stability. The aim is to further extend the lifetime of orthopaedic implants.

Whether it be for hips, knees, shoulders, spine components, elbows or ankles more and more people rely on synthetic orthopaedic joints or joint components because they offer high functionality over a long lifetime.

The biocompatibility, high abrasion resistance, impact strength and fatigue and crack resistance of Ticona’s GUR UHMWPE polymers make them ideal for standard for orthopaedic Implant procedures.

Implants made from UHMWPE polymers need to be sterilized. When sterilization is accomplished by modern irradiation techniques, stabilization with vitamin E is intended to reduce susceptibility to oxidation in this process.

The biocompatible antioxidant has already been used for many years in the food industry. The physiological compatibility of GUR polymers has been proven since the 1960s.

The thermoplastic meets the standards of the United States Pharmacopeia (USP), Class IV, and is approved by the US Food and Drug Administration (FDA). In addition, GUR polymers meet the requirements of standard ASTM F648 published by the American Society for Testing and Materials and ISO standard 5834-1/-2 for starting materials and semi-finished products.
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