AUTUMN / P.P.L. IMAGE / SIPA
On the same theme
users computer mouse will likely have a thought for its inventor Douglas Engelbart, who died Tuesday at the age of 88 years. The patent for this mouse, originally a wooden box with two metal wheels, was introduced in 1967. But it was in 1968, during a conference that Douglas had planned for the first time before an audience a video-conference link, using the mouse. If this instrument was one of the major inventions of the 20th century, the mouse also has a dark side, that of occupational diseases related to the over-intensive browsing experience.
In France, an estimated 5% to 10% of musculoskeletal disorders (Tms) of the upper limb caused by a professional activity on a computer. Computer work causes it is true tendinitis, tenosynovitis, entrapment syndromes because of the working posture is very ergonomic. The muscles and tendons are affected mainly those of the neck, shoulders, lower back, wrists and hands.
Among these so-called computer disease, carpal tunnel syndrome (Scc) is the most known pathology and the most widespread. It is an inflammation of the median nerve due to its compression at the wrist. And, according to a Danish study, the frequent use of the mouse (more than 20 hours per week) increases the risk of being struck by this syndrome.
Indeed, how to use the mouse as well as keyboard is important. So that continued support of the wrist while typing or mouse of the remote operator are, for example, risk situations TMS the upper limbs. In addition, muscle tone also plays a role. When you are stressed, it is more contracted than usual and the muscles can not relax completely at rest.
So to avoid this, it is advisable to make a break of ten minutes about every 2 hours to relieve such pressures and sustained efforts by the hands and wrists.
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