Navigation Links
New material mimics bone to create better biomedical implants
Date:2/16/2010

A "metal foam" that has a similar elasticity to bone could mean a new generation of biomedical implants that would avoid bone rejection that often results from more rigid implant materials, such as titanium. Researchers at North Carolina State University have developed the metal foam, which is even lighter than solid aluminum and can be made of 100 percent steel or a combination of steel and aluminum.

In a new paper, researchers have reported recent findings that, in addition to the extraordinary high-energy absorption capability and light weight of their novel composite foams, the "modulus of elasticity" of the foam is very similar to that of bone. Modulus of elasticity measures a material's ability to deform when pressure is applied and then return to its original shape when pressure is removed. The rough surface of the foam would also foster bone growth into the implant, improving the strength of implant.

Modulus of elasticity, which is measured in gigapascals (GPa), is extremely important for biomedical implants, explains Dr. Afsaneh Rabiei, an associate professor of mechanical and aerospace engineering and an associate faculty member of biomedical engineering at NC State and co-author of the paper.

"When an orthopedic or dental implant is placed in the body to replace a bone or a part of a bone, it needs to handle the loads in the same way as its surrounding bone," Rabiei says. "If the modulus of elasticity of the implant is too much bigger than the bone, the implant will take over the load bearing and the surrounding bone will start to die. This will cause the loosening of the implant and eventually ends in failure. This is known as "'stress shielding.'" When this happens, the patient will need a revision surgery to replace the implant. Our composite foam can be a perfect match as an implant to prevent stress shielding," Rabiei explains.

To give an idea of the difference between the modulus of elasticity of bone and
'/>"/>

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

Page: 1 2

Related biology news :

1. Keck Foundation funds study of biological interactions with nanomaterials
2. New Delft material concept for aircraft wings could save billions
3. Scientists discover record-breaking hydrogen storage materials for use in fuel cells
4. Purdue researchers obtain a snapshot clarifying how materials enter cells
5. Ecologists, material scientists pursue genetics of diatoms elegant, etched casing
6. Genetic material under a magnifying glass
7. Material Technologies Holds First Electrochemical Fatigue Sensor Training for Private Inspection Firms
8. Sea cliff erosion, hemp construction materials and more at UCSD Engineering Conference
9. Lensless camera uses X-rays to view nanoscale materials and biological specimens
10. Creation of a new material capable of eliminating pollutants by the hydrocarbon industry
11. Scientists find that squid beak is both hard and soft, a material that engineers want to copy
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
New material mimics bone to create better biomedical implants
(Date:4/24/2014)... --- New research shows that cells are more resilient ... thought. Even when missing critical components, cells can adapt ... way. , In a study published in this week,s ... Michigan State University showed that cells can grow normally ... , "Our genetic information is stored in DNA, which ...
(Date:4/24/2014)... is very pleased to announce that it has assumed ... from the University of Wisconsin. , The ... open-access, peer-reviewed journal that publishes papers on all aspects ... from the molecular to the ecological -- as well ... available to individuals and institutions, and it provides a ...
(Date:4/24/2014)... be improved with new insights into the make-up of ... the Amazon Basin have revealed unprecedented detail of the ... by comparing satellite maps with hundreds of field plots. ... more accurately the amount of carbon each tree can ... schemes, in which trees are given a cash value ...
Breaking Biology News(10 mins):Cell resiliency surprises scientists 2ESA to publish the Journal of Insect Science 2Amazon rainforest survey could improve carbon offset schemes 2
... National Institute of General Medical Sciences, part of the ... Models of Infectious Disease Agent Study for a research ... led by Stephen Eubank, professor. Infectious diseases pose ... worldwide. The Models of Infectious Disease Agent Study (MIDAS) ...
... There might be a time when instead of just drinking ... skin as a way of preventing harmful sun damage or ... caffeine guards against certain skin cancers at the molecular level ... ATR. Scientists believe that based on what they have learned ...
... from NYU Langone Medical Center,s Departments of Orthopaedic Surgery ... used to detect subtle changes in joint cartilage microstructure ... key markers of early osteoarthritis (OA). By using these ... can shift the management of the disease from eventual ...
Cached Biology News:National Institutes of Health renews successful infectious disease research study 2National Institutes of Health renews successful infectious disease research study 3More evidence that caffeine lowers risk of skin cancer 2NYU Langone experts find MRI techniques can detect early osteoarthritis 2
(Date:1/15/2014)... DTS Language Services, Inc . is pleased ... Life Science organizations who need document translations. Clients will ... their documents in advance with a selection of nearly 50 ... often a critical factor in clinical and scientific fields, and ...
(Date:1/15/2014)... Sunnyvale, CA (PRWEB) January 15, 2014 ... throughput research solutions, today announced that Lupin Limited, one ... of Freeslate’s CM Protégé PharmD System for ... in Mumbai, India, is focused on a wide range ...
(Date:1/15/2014)... , Jan. 15, 2014 TaiGen Biotechnology Company, ... exclusive agreement with R-Pharm, a leading Russian pharmaceutical company, ... the Russian Federation , ... Independent States (CIS). Nemonoxacin is a novel antibiotic for the ...
(Date:1/14/2014)... (PRWEB) January 14, 2014 Carahsoft and ... Thursday, January 23, 2014 at 2pm EST (11am PST), ... The topic focuses on how technology can turn raw, ... decisions for government agencies. The online webinar will last ...
Breaking Biology Technology:DTS Improves Efficiency for Life Science Document Translations 2Lupin Selects Freeslate’s CM Protégé PharmD System to Accelerate Polymorph Screening for Drug Development 2Lupin Selects Freeslate’s CM Protégé PharmD System to Accelerate Polymorph Screening for Drug Development 3TaiGen Biotechnology Signed Exclusive License Agreement with R-Pharm for Nemonoxacin (Taigexyn(R)) 2TaiGen Biotechnology Signed Exclusive License Agreement with R-Pharm for Nemonoxacin (Taigexyn(R)) 3TaiGen Biotechnology Signed Exclusive License Agreement with R-Pharm for Nemonoxacin (Taigexyn(R)) 4Webcast - Natural Language Processing: Converting Raw Data into Actionable Knowledge – Hosted by Carahsoft and CDS Federal Services 2
... the rising trend toward miniaturization, carbon nanotubes which ... and possess several unique and very useful properties ... blocks in nanosized electronic and mechanical devices. But it ... tendency to clump together, that make it difficult for ...
... testament to tight integration and ... excellent ... ), a,leader in radiology and medical image and information management solutions,today ... than 100 facilities that use MEDITECH(TM) as their health,information system. AMICAS ...
... device industry to benefit ... trial recruitment efforts, MINNEAPOLIS, May 27 ... has strengthened the,pharmaceutical side of its business with ... a commitment to leveraging differentiators unique,to the medical ...
Cached Biology Technology:Weizmann Institute scientists create new nanotube structures 2AMICAS Announces Integrations at More Than 100 MEDITECH Facilities 2AMICAS Announces Integrations at More Than 100 MEDITECH Facilities 3ThreeWire Expands Presence in the Pharmaceutical Arena 2
Human Cystatin F MAb (Clone 292103)...
Rat CNTF R alpha Affinity Purified Polyclonal Ab...
... Ac-DEVD-CHO is an inhibitor ... The concentration of inhibitor ... activity must be determined ... Ten micromolar inhibitor is ...
TUNEL Apoptosis Detection Kit...
Biology Products: