New material mimics bone to create better biomedica... ( A metal foam that has a similar el...)

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

0

GOOD

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:

Related Image:

New material mimics bone to create better biomedical implants

(Date:6/18/2013)... D.C. June 18, 2013 Joshua Obar, Ph.D., ... has been honored with a 2013 ICAAC Young Investigator ... regulation of immunological memory responses to infection. , ... University in 2001 and went on to complete his ... 2006. He performed his Ph.D. thesis research in ...

(Date:6/18/2013)... to a chemical modification of DNA and this ... the DNA sequence. Until now, scientists believed that ... certain genes. Today, a team of researchers from ... Emmanouil Dermitzakis, Louis-Jeantet Professor at the Faculty of ... case and that DNA methylation may play both ...

(Date:6/17/2013)... locations with central nervous system infections may well be ... according to a study to be published in ... Society for Microbiology. Researchers have detected the virus in ... central nervous system infections of unknown cause, and in ... pigs and poultry, suggesting animals may serve as reservoirs ...

Breaking Biology News(10 mins):The American Society for Microbiology honors Joshua Obar 2 The secret of DNA methylation 2 New virus discovered in patients with central nervous system infections 2 New virus discovered in patients with central nervous system infections 3

[0] The American Society for Microbiology honors Joshua Obar [0] The secret of DNA methylation [0] New virus discovered in patients with central nervous system infections

... Recognized by ... the Leading Guide for Office Equipment ... of,America, Inc., a market leader in document imaging scanners ... "Editor,s Choice",designation in the Better Buys for Business 2008 ...

... discovered that a gene controlling whether blood vessels differentiate ... to a vascular disorder in the brain that causes ... and the new findings are the first to provide ... particular brain disorder, known as BAVM, and to provide ...

... NY, Sept. 2, 2008) People concerned about the ... families and communities will have a unique opportunity to ... about the causes, symptoms and progression of such illnesses ... learn about current and potential treatments. In an ...

Cached Biology News:Fujitsu Scanners Selected as 'Editor's Choice' in Better Buys for Business 2008 Scan-to-File Guide 2 Fujitsu Scanners Selected as 'Editor's Choice' in Better Buys for Business 2008 Scan-to-File Guide 3 Gene is likely cause of stroke-inducing vascular malformations 2 Gene is likely cause of stroke-inducing vascular malformations 3 Healthy Minds Across America features 48 public forums on mental health research, Sept. 14 2 Healthy Minds Across America features 48 public forums on mental health research, Sept. 14 3

Fujitsu Scanners Selected as 'Editor's Choice' in Better Buys for Business 2008 Scan-to-File Guide Gene is likely cause of stroke-inducing vascular malformations Healthy Minds Across America features 48 public forums on mental health research, Sept. 14

(Date:6/19/2013)... 2013 A new look at “big ... other trends will highlight technical sessions at SPIE ... In its 33rd year, the three-day event is the ... key suppliers, approximately 100 technical presentations and numerous networking ... society for optics and photonics , the meeting will ...

(Date:6/18/2013)... Cord Blood Corporation (NYSE: CO ) ("CCBC" ... collection, laboratory testing, hematopoietic stem cell processing, and stem ... results for the fourth quarter and full year of ... Fourth Quarter of Fiscal 2013 Highlights , ... by 33.3% to RMB133.0 million ($21.4 million) from RMB99.8 ...

(Date:6/18/2013)... Miami, FL (PRWEB) June 18, 2013 The ... associate the skin as an important human body part. Similar ... cared for in order to function, repair and grow. Recent ... with vitamins and supplements, is just as important as other ... and supplements to aid in skin cell reproduction, increase the ...

(Date:6/18/2013)... June 18, 2013 regulated information — Global biopharmaceutical ... today announced the launch of a new Pledge ... The Pledge empowers the millions ... and make a personal commitment to demand more: greater ... care team and additional partial-onset seizure control. More information ...

[0] ‘Big Glass’ and Visions for the Future are on the Program for SPIE Photomask Technology [0] China Cord Blood Corporation Reports Financial Results for the Fourth Quarter and Full Year of Fiscal 2013 [0] Natural Acne Remedies Through Diet, Probiotic Action Shares New Insight on What Foods May Help Lead to Clear Skin [0] Professional Golfer Jeff Klauk Tees Off New Pledge Campaign for People Living with Epilepsy

... Jan. 6, 2011 Amgen (Nasdaq: AMGN ... collaborate to develop XmAb ® 5871, an Fc- engineered ... currently in late-stage preclinical development for the treatment of ... the agreement, Amgen has the option to an exclusive ...

... (Nasdaq: NEOG ) announced today that it has ... to replace the retiring Richard Current. Current will immediately relinquish ... the end of the fiscal year, May 31. ... last eight as CFO, vice president of finance, and treasurer. ...

... Verenium Corporation (Nasdaq: VRNM ), a pioneer ... solutions, today announced that the lawsuit filed ... dismissed. Verenium,s motion for summary judgment to dismiss CVI,s ... for the Southern District of New York. CVI,s complaint ...

Cached Biology Technology:Amgen and Xencor Enter Option Deal to Co-Develop Xencor's Novel Antibody for Autoimmune Diseases 2 Amgen and Xencor Enter Option Deal to Co-Develop Xencor's Novel Antibody for Autoimmune Diseases 3 Neogen Names Quinlan as CFO 2 Verenium Announces Favorable Outcome of Capital Ventures International Lawsuit 2 Verenium Announces Favorable Outcome of Capital Ventures International Lawsuit 3

Amgen and Xencor Enter Option Deal to Co-Develop Xencor's Novel Antibody for Autoimmune Diseases Neogen Names Quinlan as CFO Verenium Announces Favorable Outcome of Capital Ventures International Lawsuit

... Protein DetectorTM Microarray Dot Blot Kits overcome ... and quantitation over a wide range in ... ) detection. They are ideal for ... hundreds of samples for the presence of ...

... Convenient, easy-to-use kits for arraying ... detection using common lab equipment. DiscoverLight ... analysis of your protein, cell lysate ... format. The kits include specially designed ...

Request Info...

... StabilZyme AP Conjugate Stabilizer is ... purified bovine protein and other non-toxic ... (4-Morpholine-ethanesulfonic acid), pH 5.5 6.5. ... of 0.02% methylisothiazolone and 0.02% bromonitrodioxane ...

Biology Products:

Protein Detector Microarray Dot Blot Kit, AP Chemiluminescent from KPL DISCOVERLIGHT RABBIT ARRA from Pierce Biotechnology, Inc.Conjugate Stabilizing Diluent Alkaline Phosphatase from Meridian Life Science, Inc.StabilZyme AP Conjugate Stabilizer from SurModics, Inc.