Dr. Mouse (now RenMouse) - Formerly also called
Vertical Mouse or Anir Mouse.
Note: Dr. Mouse has been replaced by Renaissance Mouse (RenMouse). We have a large
stock of the Renaissance Mouse in graphite color. Light grey or white are no longer
manufactured.
Scientific Study
A study was carried out
to compare RenMouse with a traditional mouse. Electromyography (EMG) was used to record
the muscle strain on the extensor pollicis longus, extensor digitorum communis and
trapezius muscles.
The muscle strain on the forearm proved significantly lower with the RenMouse
than
with a conventional model. This was also true for the extensor pollicis longus for the
static (p=0.0005) and median (p=0.001) values of the amplitude distribution function (ADF)
and the number of occasions per minute when the muscle strain was 1% MVC (p=0.03). The
same clear trend was also found for the static muscle strain from the extensor digitorum
com-munis (p=0.06). A reduction in muscle strain is thought to play an important role in
the prevention of pain in the musculoskeletal system.
The RenMouse requires only slight flexion of the wrist and slight twisting of the
hand, resulting in low pressure in the carpal tunnel. This pressure may be a key factor in
the development of carpal tunnel syndrome (CTS). The study showed that the general muscle
strain is heavier than previously believed when using a conventional mouse.
Injuries resulting from use of a conventional mouse are likely to increase in the
future. In the U.S. alone, estimates put the cost of "mouse injuries" at
$7 billion. It was therefore vital to design products which can reduce and prevent
injuries caused by using the wrong mouse.
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