Core Tip: the so-called "mouse hand" is a popular
name for the main symptoms, wrist, index finger or middle finger joint pain,
numbness, thumb muscles feel powerless, if left untreated, can also lead to
impaired hand function forces weakened. Because many computer users this
disease is named. Medical words, is "repetitive stress injuries". In
general, wrist activity under normal circumstances will not hinder the median
nerve.
Have you heard of the "mouse hand" it? Diseases of
modern civilization "mouse hand" is spreading, and begin to affect
the lives of people, this is definitely not an alarmist.
"Mouse hand, air conditioning disease ..." When we
enjoy in modern civilization at the same time, some of the diseases of modern
civilization is approaching our lives. Most of the diseases of modern
civilization usually pay no attention, careless treatment, caused by bad
habits. Therefore, the prevention of these "problems diseases" is necessary
from the day-to-day start. Must pay attention, but there are still many
diseases of modern civilization "is a preventable and non-governance.
Today, we come and we talk about the terror "mouse hand.
The so-called "mouse hand" is a popular name for the
main symptoms, wrist, index finger or middle finger joint pain, numbness, the
thumb muscles feel weakness, if left untreated, can also lead to impaired hand
function, strength weakened. Because many computer users this disease is named.
Medical words, is "repetitive stress injuries". In general, wrist
activity under normal circumstances will not hinder the median nerve.
Operate a computer keyboard and mouse have a certain height,
the the wrist must dorsiflexion certain angle, when the wrist is in a forced
position, not naturally stretch. When the wrist for a long time in a state of
tension, compression of the median nerve in the carpal tunnel, the nerve
conduction is blocked, hands tingling, numbness, and weakness symptoms appear,
when some joint activities also found a slight sound, these are the "mouse
hand" of early disease. Subsequently may also occur gradually toward the
shoulders to spread the pain, quality of life will suffer greatly, whether it
is entertainment cards, dialing a phone number, or stir-fry cooking, these
simple hand movements will make you feel very difficult . You can say
"mouse hand" affect the normal life and work.
The scientists conducted experiments, 6 hours continuous work
next to the computer, fingers as the pressure on his legs like brisk walking 40
kilometers by the intensity of pressure. The consequences of doing so: the same
action continued for a long time, will make the wrist to become faster and faster
"mouse hand".
"Mouse hand" is more common in women, the incidence
rate is three times that of men. Which the majority of 30-year-old to
60-year-old, this is because the the female wrist pipe is usually smaller than
men, wrist median nerve vulnerable to oppression. For "mouse hand",
the early symptoms in patients with mild, rest is the most important treatment
available when necessary plasterboard wrist fixed it straight; serious illness,
you will need surgical repair. If you ignore the long-term, may lead to nerve
damage, palms black muscle necrosis.
"Mouse hand" there is no miracle cure, only rest
convalesce, Europe and the United States for the special design of the mouse
hand ergonomic vertical mouse, the hand in a natural vertical mouse, thereby greatly
reducing the mouse Hand occur. This HE company corporation with the Dutch
ergonomic expert to design a HE ergonomic vertical mouse ,and it’s design according
to the small hand style of Japan ,
Korea
"Mouse hand" how to produce it?
Computer keyboard and mouse "mouse hand"
"murderer".
Our daily lives, long-term use of the keyboard and mouse, nine
tendons and a nerve in the wrist, and the wrist to palm buckling activity of
approximately 70 ° to 80 ° flexion of 50 ° to 60 ° to the backs of hands using
the mouse and keyboard, wrist dorsiflexion about 45 ° to 55 °, close to the
largest angle, which will stretch the carpal tunnel within the tendon so that
it is in the state of high tension, coupled with the heel of your hand is
supported on the desktop will be oppressed carpal tunnel In this state,
repeated movements of the fingers so easily tendon, nerve rubbing back and
forth, the occurrence of chronic injury caused by inflammatory edema, thereby
giving rise to the thumb, index finger, middle finger, pain, numbness, swelling
can also occur in the wrist joint swelling, fine movements of the hand is not
flexible, and weakness. People use the mouse, repeated mechanical activities
focus on two fingers, and cope with this slightly monotonous activities, but
also strained the ligaments of the wrist. Lead to peripheral nerve injury or
oppression. Wrist to withstand intensive, repeated, excessive activity, to reduce
the volume of local swelling cause carpal tunnel, median nerve entrapment,
which has led to the "mouse hand.
Mouse hand "early performance is not flexible wrist pain,
burning sensation, activities, finger soreness and stiffness, numbness and
other finger sensory disturbances as the main performance. Severe finger cramps
muscle atrophy appear.
Operating the mouse position and posture correct icon
The higher the position of the mouse, and the distance of the
mouse, the greater the damage to the wrist, the farther away from the body, the
greater the damage to the shoulder. Therefore, the mouse should be placed in a
slightly lower position, this position is equivalent to sitting the case, the
upper arm perpendicular to the ground when the height of the elbow. The
position of the keyboard should be about this. Many computer desk without the
special position of the mouse, so the mouse on the desktop, long-term work, the
damage is self-evident. The occurrence of the "mouse hand" can be
said is individual differences in mouse, mouse size improper selection, use
posture these reasons.
"Mouse hand" What is the harm?
With the widespread use of computers, more and more people
suffering from wrist pain associated with the use of the mouse and keyboard,
affecting the efficiency of our work, the quality of life.
Symptoms early stage of the wave of the hand and wrist pain,
numbness, weakness, and finally affect the arm. The patient will feel a
tingling, weakness of the hand, you can not make a fist and grasping small
objects, with the symptoms get worse, you may develop can not drive and
dressing. The hand muscles white, hand function irreversible damage occurs.
Serious may appear a permanent disability of the hand, the hand muscles are
very weak necessary to the purposes of carpal tunnel incision.
Purposes of carpal tunnel incision
Below let's look at some data and examples:
According to the U.S. Department of Labor statistics, the
employee repetitive strain injuries of the upper body (such as the wrist,
elbow, shoulder) accounted for nearly 2/3 of the reported occupational
diseases, the most common strain is "mouse hand".
U.S. Department of Labor claims that the "mouse
hand" is a major occupational diseases in the United States
Ms Lau palm often numb, at first, a few massage like numb
after a long time the symptoms will become more and more serious, and sometimes
fell asleep "Ma" will be awake. Affected the normal life.
Barclays Bank PLC (Barclays Bank) compensation for £ 244,000
to a former staff Fiona Conaty in British court. Fiona Conaty before leaving
the bank an ordinary staff suffering from mouse hand, her right hand because of
work, and the pain it had to give up the work of the Bank. She claimed in court
that the nature of her work for her inappropriate posture for a long time the
keyboard and using a mouse. Her symptoms has been going on for two years, so
that later she can not tie their shoes and comb. This time, she was only 28
years old.
How to prevent the mouse hand?
1, to maintain the correct posture
The keyboard should be placed in the straight ahead position
of the user's keyboard and mouse height should not be too high, arms drooping
naturally, elbow height is the height of the mouse and keyboard placed, this
will help reduce operating computer low back, neck damage to the muscles and
other parts of hand tendon sheath. When using the mouse, the arms do not become
vacant, to relieve the pressure of the wrist, do not move the mouse wrist and
try to rely on arm strength do to reduce wrist stress. The keys of the keyboard
and mouse do not be too hard, forced easily moderate as well.
2, note the time and rest
After one hour continuous use of the keyboard and mouse, we should
be the proper rest, do some fist, pinch refers and so relaxing finger
movements, the shoulder activities for frequent users to play games more
important, a lot of friends often overnight fierce battle not only too long,
but also in a long time nervous state our body more easily fatigued.
We have to pay more attention to the rest, in order to have a
good body
Expert and his aides have conducted a related investigation,
they distributed a questionnaire to 52 people in line with the characteristics
of a result, 26 cases were diagnosed with a "mouse hand". They also
found that using a computer every day for two hours to six hours, ranging from
people, "mouse hand" the incidence was significantly higher than the
normal population.
3, a change in his comfortable keyboard and mouse
The proposed conditional use ergonomic keyboard, an excellent
ergonomic keyboard or mouse, these seemingly dispensable design, but
unknowingly let our fingers and wrist more comfortable to operate. And size
suitable for their own hand-mouse, this can effectively improve the use of
comfort, to avoid becoming a "mouse hand". Do not move the mouse to
use brawn.
Many women prefer to use a small mouse, but experts point out
that this habit is not good, curvature, and contact with the breadth of the
mouse more to contribute to the dispersion of force, to reduce wrist fatigue
life.
4, some of the recommendations of figures:
55 to 72 cm: the best desk height adjustment between 55 to 72
cm. In addition, typing becomes easier to get the best keyboard height slightly
lower than when seated elbow height of, and in front of the body, so that your
elbows are bent 90 degrees.
5 to 10 cm: in order to comfortably use the mouse, the desktop
area to support the lower arm is best to have 5 to 10 cm.
5 to 10 cm: a 5 to 10 cm, referred to here is the chair. Ideal
chair and the distance from the edge of the table should be controlled in the 5
to 10 cm, and the height of the chair is best able to adjust and conform the
anatomical principles seats and backrest forward physical freedom, sideways
movement.
Two hours: the health of the wrist, between every two hours of
continuous work, be sure to rest for a while, a little joint.
5, do more exercise
The following health practices can effectively control the
"mouse hand".
(1) clockwise and counterclockwise rotation of the wrist 25
times each, at the same time, with the thumb of the other hand massage wrist
soreness.
(2) his hands clasped together in the palm of your hand as a
fulcrum rotary motion of the friction caused by the micro heat. Five minutes a
day, wrist to promote blood circulation, relieve muscle soreness symptoms.
(3) The first hard fist, then the idle turn outstretched
little finger, ring finger, middle finger and index finger. Left and right
hands 10 times each, to relieve the tendons of the wrist.
Full Summary: The understanding of the above, I believe we
will "mouse hand" pay attention to it, and finally want to tell
everyone the "mouse hand" prevention, self-care is a more effective
way. Usually develop good posture, regardless of work or rest, should pay
attention to the posture of the hand and wrist. We use computers to maintain
the correct posture, choose ergonomic mouse and keyboard devices, this is the
most fundamental and most effective way!
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