Featured Research

from universities, journals, and other organizations

Avoiding Carpal Tunnel Syndrome

Date:
March 12, 2007
Source:
Human Factors and Ergonomics Society
Summary:
Researchers have conducted the first study that systematically identifies how one contributor to carpal tunnel syndrome -- carpal tunnel pressure -- can be examined in detail to establish limits on how much a wrist can be flexed before nerve damage sets in.

A group of human factors/ergonomics researchers have conducted the first study that systematically identifies how one contributor to carpal tunnel syndrome -- carpal tunnel pressure -- can be examined in detail to establish limits on how much a wrist can be flexed before nerve damage sets in.

In work involving the hands, whether using a computer or a hammer, the wrist is a vulnerable spot. Repeated or sustained bending and flexing can lead to carpal tunnel syndrome (CTS).

A group of human factors/ergonomics (HF/E) researchers from the University of California at San Francisco and McMaster University in Ontario, Canada, have conducted the first study that systematically identifies how one contributor to CTS -- carpal tunnel pressure -- can be examined in detail to establish limits on how much a wrist can be flexed before nerve damage sets in.

The researchers believe their findings could be used to create simple guidelines to help workers avoid wrist postures that are likely to cause nerve trauma. The findings from their study appear in a paper in the February issue of Human Factors: The Journal of the Human Factors and Ergonomics Society.

The research team studied the pressure that is placed on the nerve in the carpal tunnel in various wrist postures in 37 healthy men and women between the ages of 22 and 50. Wrist postures that are not neutral (that is, bent or flexed) cause increased pressure on the nerve. The researchers concluded that when sustained pressure on the carpal tunnel reaches 30 mmHG, injury is likely to occur.

In order to keep pressure below 30 mmHG, it is recommended that sustained wrist extension (bending the hand back) should not exceed 32.7 degrees, wrist flexion (bending the wrist toward the palm) should not exceed 48.6 degrees, ulnar deviation (sideways toward the small finger) should not exceed 14.5 degrees, and radial deviation (sideways toward the thumb) should not exceed 21.8 degrees.

The researchers believe that a set of guidelines could be developed from their data -- guidelines that could, if applied by engineers and designers during the design of work and tools, protect workers. Such guidelines could also be used to identify tasks that may put workers at risk for developing or aggravating CTS.


Story Source:

The above story is based on materials provided by Human Factors and Ergonomics Society. Note: Materials may be edited for content and length.


Cite This Page:

Human Factors and Ergonomics Society. "Avoiding Carpal Tunnel Syndrome." ScienceDaily. ScienceDaily, 12 March 2007. <www.sciencedaily.com/releases/2007/02/070227105435.htm>.
Human Factors and Ergonomics Society. (2007, March 12). Avoiding Carpal Tunnel Syndrome. ScienceDaily. Retrieved August 20, 2014 from www.sciencedaily.com/releases/2007/02/070227105435.htm
Human Factors and Ergonomics Society. "Avoiding Carpal Tunnel Syndrome." ScienceDaily. www.sciencedaily.com/releases/2007/02/070227105435.htm (accessed August 20, 2014).

Share This




More Health & Medicine News

Wednesday, August 20, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Ebola-Hit Sierra Leone's Freetown a City on Edge

Ebola-Hit Sierra Leone's Freetown a City on Edge

AFP (Aug. 19, 2014) Residents of Sierra Leone's capital voice their fears as the Ebola virus sweeps through west Africa. Duration: 00:56 Video provided by AFP
Powered by NewsLook.com
101-Year-Old Working Man Has All The Advice You Need

101-Year-Old Working Man Has All The Advice You Need

Newsy (Aug. 19, 2014) Herman Goldman has worked at the same lighting store for almost 75 years. Find out his secrets to a happy, productive life. Video provided by Newsy
Powered by NewsLook.com
Researcher Testing on-Field Concussion Scanners

Researcher Testing on-Field Concussion Scanners

AP (Aug. 19, 2014) Four Texas high school football programs are trying out an experimental system designed to diagnose concussions on the field. The technology is in response to growing concern over head trauma in America's most watched sport. (Aug. 19) Video provided by AP
Powered by NewsLook.com
American Ebola Patient Apparently Improving, Outbreak Is Not

American Ebola Patient Apparently Improving, Outbreak Is Not

Newsy (Aug. 19, 2014) Nancy Writebol, an American missionary who contracted Ebola, is apparently getting better, according to her husband. The outbreak, however, is not. Video provided by Newsy
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:
from the past week

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins