
What are some of the advanced wear-reducing materials available for hip replacement?
OXINIUM◊ Oxidized Zirconium
Ceramic on ceramic
Metal on metal
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Patients who desire to return to an active lifestyle can have more confidence in the longevity of their hip replacement since these wear-reducing materials demonstrate low wear rates, are better able to tolerate activity, and may last longer than traditional metal-on-plastic hip replacements.
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OXINIUM◊ material is a metal alloy whose surface has been transformed into a smooth, black ceramic surface. This remarkable surface wears like a ceramic, but beneath the surface it is still solid metal and thus retains its strength characteristics. The ceramic surface makes OXINIUM◊ implants 4,900 times more abrasion resistant than standard cobalt chrome. It also reduces friction between the implant and the plastic or cartilage surfaces. The result is superior durability over time.
With an OXINIUM◊ hip replacement, the ball is replaced with an OXINIUM◊ femoral head and the socket is replaced with cross-linked plastic. This reduces wear by 98%1,2 in laboratory testing when compared to traditional metal on plastic hip replacements. The OXINIUM◊ surface also reduces the concern for metal wear particles that can occur from metal on metal hip replacements and brittle fractures which sometimes occur with ceramic on ceramic hip replacement. Talk with your surgeon to learn more about OXINIUM◊ hip replacements and to find out if they are right for you.
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1. MacDonald, S.J. MD, McCalden, R.W. MD, Chess D.G. MD, Bourne, R.B. MD, Rorabeck, C.H. MD, Cleland, D. BScN; Leung, F. PhD +: Metal-on-Metal Versus Polyethylene in Hip Arthroplasty: A Randomized Clinical Trial. Clinical Orthopaedics & Related Research. 1(406):282-296, January 2003.
2. Scott M, Morrison M, Mishra SR, Jani S, A Method to Quantify Wear Particle Volume Using Atomic Force Microscopy. ORS Transactions Vol. 27 2002 (Dallas, Texas) 132.
3. Clarke IC, Good P, Schroeder D, Anissan L, A. Stark, Oonishi H, Schuldies J, and Gustafson G. Ultra-low wear rates for rigid-on-rigid bearings in total hip replacements. Proc Inst Mech Eng [H]. 2000; 214(4):331-47.
4. MacDonald, S.J. MD, McCalden, R.W. MD, Chess D.G. MD, Bourne, R.B. MD, Rorabeck, C.H. MD, Cleland, D. BScN; Leung, F. PhD +: Metal-on-Metal Versus Polyethylene in Hip Arthroplasty: A Randomized Clinical Trial. Clinical Orthopaedics & Related Research. 1(406):282-296, January 2003.