Forum for Science, Industry and Business

Sponsored by:     3M 
Search our Site:

 

Broken arm? Brain shifts quickly when using a sling or cast

17.01.2012
Using a sling or cast after injuring an arm may cause your brain to shift quickly to adjust, according to a study published in the January 17, 2012, print issue of Neurology®, the medical journal of the American Academy of Neurology. The study found increases in the size of brain areas that were compensating for the injured side, and decreases in areas that were not being used due to the cast or sling.

"These results are especially interesting for rehabilitation therapy for people who've had strokes or other issues," said study author Nicolas Langer, MSc, with the University of Zurich in Switzerland. "One type of therapy restrains the unaffected, or "good," arm to strengthen the affected arm and help the brain learn new pathways. This study shows that there are both positive and negative effects of this type of treatment."

For the study, researchers examined 10 right-handed people with an injury of the upper right arm that required a sling for at least 14 days. The entire right arm and hand were restricted to little or no movement during the study period. As a result, participants used their non-dominant left hand for daily activities such as washing, using a toothbrush, eating or writing. None of the people in the study had a brain injury, psychiatric disease or nerve injury.

The group underwent two MRI brain scans, the first within two days of the injury and the second within 16 days of wearing the cast or sling. The scans measured the amount of gray and white matter in the brain. Participants' motor skills, including arm-hand movements and wrist-finger speed, were also tested.

The study found that amount of gray and white matter in the left side of the brain decreased up to ten percent, while the amount of gray and white matter in the right side of the brain increased in size.

"We also saw improved motor skills in the left, non-injured hand, which directly related to an increase in thickness in the right side of the brain," said Langer. "These structural changes in the brain are associated with skill transfer from the right hand to the left hand."

Langer noted that the study did not look at whether the decreases would be permanent.

"Further studies should examine whether using a restraint for stroke patients is really a necessity for improving arm and hand movement," he said. "Our results also support the current trauma surgery guidelines stating that an injured arm or leg should be immobilized 'as short as possible, as long as necessary.'"

The study was supported by the National Center of Competence in Research and the Swiss National Science Foundation.

The American Academy of Neurology, an association of 24,000 neurologists and neuroscience professionals, is dedicated to promoting the highest quality patient-centered neurologic care. A neurologist is a doctor with specialized training in diagnosing, treating and managing disorders of the brain and nervous system such as Alzheimer's disease, stroke, migraine, multiple sclerosis, brain injury, Parkinson's disease and epilepsy.

For more information about the American Academy of Neurology, visit http://www.aan.com or find us on Facebook, Twitter, Google+ and YouTube.

Rachel Seroka | American Academy of Neurology
Further information:
http://www.aan.com

Further reports about: Academy Academy of Neurology Brain Broken arm Neurology brain injury

More articles from Studies and Analyses:

nachricht Real-time feedback helps save energy and water
08.02.2017 | Otto-Friedrich-Universität Bamberg

nachricht The Great Unknown: Risk-Taking Behavior in Adolescents
19.01.2017 | Max-Planck-Institut für Bildungsforschung

All articles from Studies and Analyses >>>

The most recent press releases about innovation >>>

Die letzten 5 Focus-News des innovations-reports im Überblick:

Im Focus: Breakthrough with a chain of gold atoms

In the field of nanoscience, an international team of physicists with participants from Konstanz has achieved a breakthrough in understanding heat transport

In the field of nanoscience, an international team of physicists with participants from Konstanz has achieved a breakthrough in understanding heat transport

Im Focus: DNA repair: a new letter in the cell alphabet

Results reveal how discoveries may be hidden in scientific “blind spots”

Cells need to repair damaged DNA in our genes to prevent the development of cancer and other diseases. Our cells therefore activate and send “repair-proteins”...

Im Focus: Dresdner scientists print tomorrow’s world

The Fraunhofer IWS Dresden and Technische Universität Dresden inaugurated their jointly operated Center for Additive Manufacturing Dresden (AMCD) with a festive ceremony on February 7, 2017. Scientists from various disciplines perform research on materials, additive manufacturing processes and innovative technologies, which build up components in a layer by layer process. This technology opens up new horizons for component design and combinations of functions. For example during fabrication, electrical conductors and sensors are already able to be additively manufactured into components. They provide information about stress conditions of a product during operation.

The 3D-printing technology, or additive manufacturing as it is often called, has long made the step out of scientific research laboratories into industrial...

Im Focus: Mimicking nature's cellular architectures via 3-D printing

Research offers new level of control over the structure of 3-D printed materials

Nature does amazing things with limited design materials. Grass, for example, can support its own weight, resist strong wind loads, and recover after being...

Im Focus: Three Magnetic States for Each Hole

Nanometer-scale magnetic perforated grids could create new possibilities for computing. Together with international colleagues, scientists from the Helmholtz Zentrum Dresden-Rossendorf (HZDR) have shown how a cobalt grid can be reliably programmed at room temperature. In addition they discovered that for every hole ("antidot") three magnetic states can be configured. The results have been published in the journal "Scientific Reports".

Physicist Dr. Rantej Bali from the HZDR, together with scientists from Singapore and Australia, designed a special grid structure in a thin layer of cobalt in...

All Focus news of the innovation-report >>>

Anzeige

Anzeige

Event News

Booth and panel discussion – The Lindau Nobel Laureate Meetings at the AAAS 2017 Annual Meeting

13.02.2017 | Event News

Complex Loading versus Hidden Reserves

10.02.2017 | Event News

International Conference on Crystal Growth in Freiburg

09.02.2017 | Event News

 
Latest News

Stingless bees have their nests protected by soldiers

24.02.2017 | Life Sciences

New risk factors for anxiety disorders

24.02.2017 | Life Sciences

MWC 2017: 5G Capital Berlin

24.02.2017 | Trade Fair News

VideoLinks
B2B-VideoLinks
More VideoLinks >>>