Difference between revisions of "Oxinium"
m (→Notes: Added cats) |
Shawndouglas (talk | contribs) m (→Notes: Cat) |
||
| Line 5: | Line 5: | ||
<!---Place all category tags here--> | <!---Place all category tags here--> | ||
[[Category:Articles transcluded from other wikis]] | [[Category:Articles transcluded from other wikis]] | ||
[[Category: | [[Category:Biomaterials]] | ||
Latest revision as of 20:43, 2 March 2016
 | This article needs additional citations for verification. (February 2016) |
 | This article is missing information about historic events related to the product since 2005 . (February 2016) |
Oxinium is the brand name of a material used for replacement joints manufactured by the reconstructive orthopedic surgery division of medical devices company Smith & Nephew. It consists of a zirconium alloy metal substrate that transitions into a ceramic zirconium oxide outer surface.
The ceramic surface is extremely abrasion resistant compared to traditional metal implant materials such as cobalt chromium. It also has a lower coefficient of friction against ultra-high molecular weight polyethylene (UHMWPE), the typical counterface material used in total joint replacements. These two factors likely contribute to the significantly lower UHMWPE wear rates observed in simulator testing. Reducing UHMWPE wear is thought to decrease the risk of implant failure due to osteolysis. All-ceramic materials can have a similar effect on reducing wear, but are brittle and difficult to manufacture. The metal substrate of Oxinium implants makes components easier to manufacture and gives them greater toughness (a combination of strength and ductility). In essence, this technology combines the abrasion resistance and low friction of a ceramic with the workability and toughness of a metal.[citation needed]
This combination of properties led to Oxinium technology being the first ever implant-related technology to win the prestigious ASM International Engineering Materials Achievement Award (EMAA) in 2005.[citation needed]
Current competitive reduced-wear options in total hip arthroplasty (THA) are ceramic-on-ceramic, metal-on-metal, and metal-on-cross-linked polyethylene. The only competitive reduced-wear option for total knee arthroplasty (TKA) is metal-on-cross-linked polyethylene.
In September 2003, Smith & Nephew recalled its Macrotextured Oxinium Profix and Genesis II knee implants because of reports that 30 people receiving the implants without bone cement had to undergo a replacement surgery after they became loose.[1]
References
- ^ Knee implant recall hits Smith & Nephew, The Guardian, [September 18, 2003]
External links
Notes
This article is a direct transclusion of the Wikipedia article and therefore may not meet the same editing standards as LIMSwiki.
