RM Pressfit vitamys® Cup
vitamys® – our new vitamin E stabilised HXLPE
vitamys® is the new and innovative highly cross-linked polyethylene(HXLPE) from Mathys. Designed for durability and longevity, vitamys® meets the highest expectations of a modern orthopaedic implant material. Enriched with vitamin E, this HXLPE heralds its next generation.
Optimal treatment and the addition of vitamin E make vitamys® one of the most durable HXLPE available today. The addition of vitamin E as anti-oxidant is currently the only method to preserve mechanical properties and ageing resistance. During and after the cross linking process, vitamin E binds oxygen and allows the free radicals to reconnect the carbon-hydrogen (CH2) chains.
Extensive testing demonstrates excellent material characteristics
In the in-vitro accelerated ageing test, vitamys® proved to be long-term oxidation and ageing resistant. vitamys® demonstrated oxidation resistance for a period of 40 years or more under physiological condition. In hip simulator test, ceramic/vitamys® and CoCr/vitamys® bearings showed 7 times lower wear rates compared to conventional CoCr/ UHMWPE couplings.
Furthermore, vitamys® is the first and only highly cross-linked polyethylene used in total hip replacement that is equivalent to the best PE type 1 classification (according to ISO 5834-2), meeting the highest requirements for yield strength, ultimate tensile strength and elongation at break. These mechanical properties are most important for long-term performance of the material. *
vitamys® is a high wear resistant alternative to hard/hard bearings for young and active patients. Used in combination with our ceramic heads ceramys® or Bionit®2 there is no risk of increased ion levels or risk of chipping/fracture of the inlay – a truly «forgiving» combination.
Experience meets innovation: The RM Pressfit vitamys® Cup
The RM Pressfit vitamys® implant is a cement free monobloc cup made of vitamys® with equatorial press fit and a flattened pol. It is the first cup of this type which combines the advantages of low rigidity (similar to spongy bone, thus preventing stress shielding) with resistance to wear and ageing and clinically proven biologic anchorage.
The benefits of vitamys® allow a reduction in the polyethylene wall thickness and larger articulation diameters which can be used with smaller cups: a 32 mm articulation with a cup diameter of 48 mm and a 36 mm articulation with 52 mm cups.
RM Pressfit vitamys® Cup – an overview:
- Extraordinary combination of implant design and material properties
- High wear and ageing resistance
- Proven concept of elasticity
- Easy surgical technique, MIS adapted instruments
- Extraordinary solution even for younger and active patients
The RM Pressfit vitamys® Cup was first implanted on September 15, 2009 by Martin Beck, MD in Lucerne, Switzerland and is now being used worldwide. With a cup design that has been successfully used since 2003, we are continuing the success story of the RM Pressfit Cup.
* Data are on file at Mathys Ltd Bettlach, Switzerland
Other innovative products
Our company has several other innovated products which are not
published on this website. Please refer to your Mathys contact person
for further information.