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The Hidden Dangers of Computer Use

2014.01.21 12:22

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Imagine a computer user is at his or her desk, trying to ignore the tingling or numbness they've had for months in their hand and wrist. Suddenly, a sharp piercing pain shoots through the wrist and up their arm. Is this just a passing cramp? Maybe, but it could also be the beginnings of a repetitive stress injury or worse, carpal tunnel syndrome (CTS), a painful progressive condition caused by compression of a key nerve in the wrist. Listed below are 6 important things about CTS that everyone who manufactures, sells or uses a computer regularly should be aware of.

Fact One CTS is considered by some to be a form of repetitive stress injury and as such, is caused by repetitive motions such as computer keyboard use. However, while studies have found associations between some work activities and CTS, direct causality is yet to be found. There is a myth that CTS manifests as pain when in reality what is experienced is severe numbness.

Fact Two CTS occurs when the median nerve, which runs from the forearm into the hand, becomes pressed or squeezed at the wrist. The carpal tunnel - a narrow, rigid passageway of ligament and bones at the base of the hand - houses the median nerve and tendons. Sometimes, thickening from irritated tendons or other swelling narrows the tunnel and causes the median nerve to be compressed. The result may be pain, weakness, or numbness in the hand and wrist, radiating up the arm.

Fact Three Symptoms start gradually with frequent burning, tingling or itching numbness in the palm of the hand and the fingers. Some carpal tunnel sufferers say their fingers feel useless and swollen even though little or no swelling is apparent. Decreased grip strength may make it difficult to form a fist, grasp small objects, or perform other manual tasks. In chronic and/or untreated cases, the muscles at the base of the thumb may waste away and some are unable to differentiate hot and cold by touch.

Fact Four CTS is often the result of a combination of factors that increase pressure on the median nerve and tendons in the carpal tunnel, rather than a problem with the nerve itself. Most likely the disorder is due to a congenital predisposition - the carpal tunnel is simply smaller in some people than in others.

Fact Five Women are three times more likely than men to develop carpal tunnel syndrome, perhaps because the carpal tunnel itself may be smaller in women than in men. The dominant hand is usually affected first and produces the most severe pain. Persons with diabetes or other metabolic disorders that directly affect the body's nerves and make them more susceptible to compression are also at high risk. Developing carpal tunnel syndrome is not confined to people in a single industry or job, but is especially common in those performing assembly line work.

Fact Six In 2008, approximately 50,000 workers lost time from work because of carpal tunnel syndrome and half of those workers missed more than 10 days of work. The average lifetime cost of carpal tunnel syndrome, including medical bills and lost time from work, is estimated to be about $30,000 for each injured worker.

Computer and computer workstation designers have largely ignored the many advances society has made in preventing problems such as CTS. Its critical that any manufacturer interested in the overall well being of their customers consult with a professional Ergonomic Designer. Many are able to partner with experts in the field of human anatomy, physiology and kinesiology to bring the best possible product to your production floor all while helping to maximize your companys bottom line.Links:card recovery,Wenn Ihre SD-Karte nicht mehr erkannt wird, ist l?ngst noch nicht alles verloren. In Zeiten der Computertechnologie werden physikalische, sichtbare Fehler oft ?bersehen: SD-Karten besitzen in der Regel einen Schalter. Testen Sie, ob das Problem nach Umlegen des Schalters noch besteht. Stecken Sie die betroffene SD-Karte in mehrere Digitalkameras und Card-Reader. So SD-Karte wiederherstellen, dass der Defekt beim Ger?t selbst liegt. Staub und Verunreinigungen der Kontaktfl?chen k?nnen mit einem in Spiritus getr?nkten Wattest?bchen gereinigt werden Bei stark oxidierten Kontaktfl?chen hilft Kontaktspray. k?nnen Sie versuchen mit Recovery-Tools den Inhalt Ihrer SD-Karte zu retten und sie zu formatieren. Von den Entwicklern des SD-Karte wiederherstellen gibt es das Tool SD-Karte wiederherstellen. In unserer Bildergalerie zeigen wir Ihnen Schritt-f?r-Schritt, wie Sie Musik und Bilder von Ihrer SD-Karte mithilfe des Programms retten. Wird die SD-Karte gar nicht erst erkannt, hilft Ihnen eine Kombination aus SD-Karte wiederherstellen