Navigation Links
The Biology of Broken Bones Leads to New Treatments
Date:11/3/2008

Understanding how a fracture heals uncovers "biologic treatments"

ROSEMONT, Ill., Nov. 3 /PRNewswire-USNewswire/ -- A review of research into how cells and proteins repair fractured bones published in the November 2008 issue of The Journal of the American Academy of Orthopaedic Surgeons (http://www.jaaos.org/) demonstrates that understanding the biology behind this healing process may lead to improved and less invasive treatments for fractures.

"The healing of a fracture (http://orthoinfo.aaos.org/topic.cfm?topic=A00097) takes place at the injury site and at other points in the body further away. It is one of the few human biological processes that are capable of regenerating exactly the same tissue," says study co-author Mitchell B. Harris, MD, associate professor at Harvard Medical School and chief of the orthopaedic trauma service at Brigham and Women's Hospital in Boston.

Recent research has explained more about how the body naturally repairs broken bones, and this data has allowed trauma surgeons to combine conventional treatments such as putting a cast on a fracture with "biological treatments" that mimic or exaggerate some of the regenerative processes involved in bone repair. However, there is still much to learn to improve fracture repair, especially fractures that are difficult to treat.

By understanding the processes that fail when fractures do not heal, scientists can pursue new methods of treatment. Study co-author Francois N. K. Kwong, MD, says, "We know which clinical factors impair fracture healing, but we do not always understand how they affect the cells and proteins involved in fracture repair." Dr. Kwong was a research fellow, supervised by Dr. Christopher Evans, director of the Center for Molecular Orthopaedics at the Brigham and Women's Hospital, Harvard Medical School, when the research was conducted.

Several factors are known to interfere with the healing of a fracture:

-- Compromised blood supply

-- Not stabilizing the broken bone enough during healing

-- Non-steroidal anti-inflammatory drugs, such as aspirin or ibuprofen

-- Tobacco or drug use

-- Older age

-- Damage to the surrounding tissues or blood vessels

-- Bones in several fragments or large gap between the bones.

Broken bones need three components to heal:

-- Cells

-- Proteins that signal cells to provide new building material

-- Support structures in the bones that act as scaffolding for the cells

Trauma surgeons have used a combination of these three building blocks as novel treatment of fractures.

One area of interest is bone morphogenetic proteins or BMP. These proteins, which exist in human bones, appear to have a significant affect on cells and tissues during the repair process. Several studies have demonstrated a positive effect when BMPs are applied to fractures. However, these proteins cannot make up for the lack of factors needed for a bone to heal. There are two FDA-approved proteins, (BMP-2 and BMP-7), currently in use.

The authors state that research into the balance between BMPs and their inhibitors will probably prove to be a critical factor in determining how a fracture will heal. BMPs can be less effective when several other proteins, or "inhibitors," bind to them and interfere with their ability to work. Recent evidence suggests that blocking the inhibitors may increase the rate of bone regeneration. This discovery may lead to new treatment strategies in the repair of broken bones.

Another potential biologic treatment involves stem cells. Research has demonstrated that stem cells find a route from different areas of the body directly to a fracture site. Therefore, it may be possible to inject stem cells into the circulation to promote fracture repair. Stem cells have been used by trauma surgeons working on difficult to treat fractures by transplanting cells from different regions of the body to the fracture site.

Despite these promising areas of research, there are still challenges with the hard to heal fractures that require several months of treatment. Significant research is focused on how to accelerate this repair process.

Disclosure: The authors did not receive any outside funding or grants in support of their research for or preparation of this work. Neither Dr. Kwong or Dr. Harris, nor a member of their immediate families, has received anything of value from, or owns stock in, a commercial company or institution related directly or indirectly to the subject of this article.

More information about the AAOS: http://www6.aaos.org/news/Pemr/releases/release_boiler.cfm?category=1&relea senum=714

JBJS: http://www.ejbjs.org/

Orthoinfo.org: http://www.orthoinfo.org/


'/>"/>
SOURCE American Academy of Orthopaedic Surgeons
Copyright©2008 PR Newswire.
All rights reserved

Related medicine news :

1. Curemark CEO Presents Autism Findings at Prestigious Neurobiology Conference at Oxford
2. Childers receives research in Oral Biology Award
3. George to receive Pulp Biology and Regeneration Award
4. Bioniche Presents E. coli O157:H7 Vaccine Data to International Congress of Medical Microbiology in Serbia
5. NWO/Spinoza Prize for literature, microbiology, physics and medicine
6. Gourmetceuticals Presents Findings on Science You Can Eat at Experimental Biology 2008
7. Gourmetceuticals to Present Data from Four Studies at Experimental Biology 2008
8. Pacemakers Change Biology of the Heart
9. Molecular biology of sleep apnea could lead to new treatments
10. 52 minority scientists receive travel fellowships to Experimental Biology 2008
11. Swiss Systems Biology Initiative announces Flagship Projects
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:5/5/2016)... Dubuque, IA (PRWEB) , ... May 05, 2016 ... ... his insurance agency’s ongoing community enrichment program serving families of greater Dubuque, IA. ... area’s active duty, reserve and honorably discharged veterans. Donations to Veteran’s Freedom Center ...
(Date:5/5/2016)... (PRWEB) , ... May 05, 2016 , ... ... among Pittsburgh-area schoolchildren has found that more than 40 percent of participating fifth-grade ... MD , Director of Allergy and Asthma Clinical Research in the Division of ...
(Date:5/5/2016)... (PRWEB) , ... May 05, 2016 , ... TIME for ... safety – today announced a new partnership to reach nearly 1 million children with ... in an instant and is the leading cause of accidental death in children one ...
(Date:5/5/2016)... ... May 05, 2016 , ... Sun Health registered nurse Brittany ... successful Care Transitions program at the 9th Annual Orthopedic and Spine ... in the Post-Acute Environment Through Effective Transitions of Care.” , Major changes are ...
(Date:5/5/2016)... ... ... The 2016 Nike Soccer Camp will be directed by the 2015 Big ... they bring their winning Vandals coaching philosophy to young athletes. Programs are offered for ... school players. Session dates are as follows: , Youth Day Camp – July 11th-14th, ...
Breaking Medicine News(10 mins):
(Date:5/4/2016)... May 4, 2016 ... the  "Global Actinic Keratosis Market and Competitive ... offering.       (Logo: http://photos.prnewswire.com/prnh/20160330/349511LOGO ... and Competitive Landscape Highlights 2016, provides comprehensive ... Keratosis epidemiology, Actinic Keratosis market valuations and ...
(Date:5/3/2016)... -- Research and Markets has announced the ... Market Outlook 2020" report to their offering. ... technology has improved significantly in past years due to ... coming years. Many cancer drugs have been developed by ... also expected to be developed with its help. They ...
(Date:5/3/2016)... LAKE OSWEGO, Ore. , May 3, 2016 ... and endovascular medical technology, today announced Food and ... a cardiac resynchronization defibrillator that provides heart failure ... (MRI) scans. Iperia devices also have remote monitoring ... (CLS) that adapts the heart rate in response ...
Breaking Medicine Technology: