Navigation Links
Smart coating opens door to safer hip, knee and dental implants
Date:2/3/2010

Researchers at North Carolina State University have developed a "smart coating" that helps surgical implants bond more closely with bone and ward off infection.

When patients have hip, knee or dental replacement surgery, they run the risk of having their bodies reject the implant. But the smart coating developed at NC State mitigates that risk by fostering bone growth into the implant. The coating creates a crystalline layer next to the implant, and a mostly amorphous outer layer that touches the surrounding bone. The amorphous layer dissolves over time, releasing calcium and phosphate, which encourages bone growth.

"The bone grows into the coating as the amorphous layer dissolves, resulting in improved bonding, or osseointegration," says Dr. Afsaneh Rabiei, an NC State associate professor of mechanical and aerospace engineering, associate faculty member of biomedical engineering and co-author of a paper describing the research. This bonding also makes the implant more functional, because the bonding helps ensure that the bone and the implant do a better job of sharing the load.

"We call it a smart coating because we can tailor the rate at which the amorphous layer dissolves to match the bone growth rate of each patient," Rabiei says. This is important because people have very different rates of bone growth. For example, young people's bones tend to grow far faster than the bones of older adults.

The researchers have also incorporated silver nanoparticles throughout the coating to ward off infections. Currently, implant patients are subjected to an intense regimen of antibiotics to prevent infection immediately following surgery. However, the site of the implant will always remain vulnerable to infection. But by incorporating silver into the coating, the silver particles will act as antimicrobial agents as the amorphous layer dissolves, Rabiei says. This will not only limit the amount of antibiotics patients will need following surgery, but will provide protection from infection at the implant site for the life of the implant. Moreover, the silver is released more quickly right after surgery, when there is more risk of infection, due to the faster dissolution of the amorphous layer of the coating. Silver release will slow down while the patient is healing. "That is another reason why we call it smart coating," Rabiei says.


'/>"/>

Contact: Matt Shipman
matt_shipman@ncsu.edu
919-515-6386
North Carolina State University
Source:Eurekalert  

Related biology news :

1. Vidient SmartCatch Protecting Exit Lanes at Major UK Airport
2. NOAA deploys new smart buoy off Annapolis
3. WCC Smart Search & Match and Priv-ID Announce Global Collaboration
4. NSF Emerging Frontiers program supports development of smart materials based on study of fish
5. Spread your sperm the smart way
6. Cancer: The cost of being smarter than chimps?
7. Ultrasound imaging now possible with a smartphone
8. Intruder alert: Tel Aviv Universitys Smart Dew will find you!
9. Reducing CO2 through technology and smart growth
10. WCC Smart Search & Match to Support U.S. Armys BOSS-U Program
11. HSPD-24 White Paper Now Available From WCC Smart Search & Match
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Smart coating opens door to safer hip, knee and dental implants
(Date:2/8/2017)...  Aware, Inc. (NASDAQ: AWRE ), a leading ... for its quarter and year ended December 31, 2016. ... $3.9 million compared to $6.9 million in the same quarter ... was $0.6 million compared to $2.6 million in the fourth ... 2016 was $0.5 million, or $0.02 per diluted share, which ...
(Date:2/8/2017)... Report Highlights The global biosurgery ... billion in 2016 at a compound annual growth rate ... Includes - An overview of the global market for ... from 2015 and 2016, and projections of compound annual ... market on the basis of product type, source, application, ...
(Date:2/7/2017)... LONG BEACH, New York , February 7, 2017 ... formerly known as ID Global Solutions Corporation [OTC: IDGS], ... identification, identity management and electronic transaction processing services, is ... a reorganization of the Company. Effective January ... Chairman of the Board of Directors, CEO and President. ...
Breaking Biology News(10 mins):
(Date:2/24/2017)... ... 24, 2017 , ... Chef Jodi Abel has returned from her three-week ... cities, she gained a number of delicious recipes and new techniques to share with ... Africa’s Western Cape province. It is internationally renowned for its incredible wine farms, ...
(Date:2/24/2017)... DIEGO , Feb. 24, 2017  Aethlon Medical, ... following note authored by its Chairman and CEO, ... at the Munich Security Conference last Saturday, Bill ... virus could kill more people than nuclear weapons. Mr. ... U.S. and U.K. intelligence agencies, that scientific terrorists have ...
(Date:2/24/2017)... , Feb. 24, 2017  Driven by ... biotechnology are now the fastest growing categories, finds ... Specialty Actives in Personal Care: Multi-regional Market Analysis ... and management consulting firm Kline. "Biotechnology ... that make them more effective for skin and ...
(Date:2/24/2017)... ... ... FireflySci, Inc is an explosive small business that continues to grow at ... their powerful cuvette and spectrophotometer calibration to the spectroscopy world. Now ... as they add yet another mark on the global map. , With distributors in ...
Breaking Biology Technology: