In the medical terms, the mouse hand is " repetitive stress damage . " In general, the movement of the wrist under normal conditions does not interfere with the median nerve. However, when operating the computer , because the keyboard and mouse have a certain height, the wrist must be bent back a certain angle, then the wrist is in a forced position and cannot be naturally stretched.
How did the " mouse hand " come about ?
1. When the mouse is operated, the wrist joint is mainly used as the fulcrum, which causes the pressure on the exit pipe of the wrist tube to be excessive. Coupled with repeated repeated rubbing with the table for a long time, it stimulates the nerves and blood vessels in the carpal tunnel, and the corresponding symptom group forms the mouse hand.
2 , the problem of the finger joints. The finger has multiple joint physiological structures to accommodate the bending and grasping of the fingers. However, when the mouse button is operated, the joints of the fingers are to be straightened, and the force is applied to the root of the finger (the metacarpophalangeal joint ) , and the mouse is pressed by the fingertip of the finger, and frequent operation for a long time may cause the finger to be stiff and sore. The pain of the metacarpophalangeal joint of the index finger and the distal joint of the middle finger ( commonly referred to as the middle joint of the finger ) .
3 , other reasons. Improper use of the posture, the height of the desktop is not enough, the choice of the mouse size is not appropriate, individual differences, differences between men and women, etc., are the incentives for the mouse hand.
How to prevent mouse hand attack ?
To use a variety of different input methods, do not work continuously in front of the computer for a long time, you need to do hand-relaxing activities after 1 hour of continuous use of the mouse.
The mouse and keyboard should be placed in a slightly lower position, which is equivalent to the height of the elbow when the upper arm is perpendicular to the ground in a sitting position.
When the angle between the upper arm and the front body is less than 45 degrees, the distance between the body and the mouse is appropriate. If it is too far away, the forearm will lean forward with the upper arm and shoulder, which will cause constant tension in joints and muscles.
Raising the swivel chair can also prevent the " mouse hand ". If it is difficult to adjust the mouse position, you can put the keyboard and mouse on the table, and then raise the swivel chair. The relative reduction in the desktop shortens the distance between the body and the desktop. Putting the mouse in a scientific way will greatly reduce the incidence of " mouse hand " .
Usually you should develop a good sitting posture, regardless of work or rest, you should pay attention to the posture of the hands and wrists.
Here we introduce a few simple actions to help you restore your wrist's flexibility, you can try it, and these actions also have obvious effects on older knuckle pain, if your family has such troubles You can also suggest that he ( she ) practice these actions, it is very simple, let's get started!
1. The movement of the hand
Simple sitting or sitting in a chair, with both hands in front of the shoulder and shoulder height ( Note: shoulder must relax )
Inhale: palm down, open your fingers, and do your best to open
Exhale: Thumbs in the palm of your hand, squeeze hard
Repeat 10 times, and focus on breathing, silent, and hand movements during practice.
2. Wrist bending exercises
Sitting in the same position, with both hands flat and shoulder-high, palm down, throughout the practice, please keep your palm open and your fingers are always straight.
Inhale: Straighten your arms and slowly open your hands back and forth, just like sticking to the wall with your fingertips facing up
Exhale: hand down, fingertips facing the ground
During the entire exercise, always keep your elbows straight, do not bend the knuckles or the parts of the heels, and start the next round with the hand up, repeating 10 times.
3. Wrist joint rotation
Sit in a basic sitting position and keep your back straight
A. The right arm is stretched forward and shoulder height, the thumb is pinched inside, and if necessary, you can support your right hand with your left hand.
This is the preparation posture. Slowly rotate the wrist to ensure that the palm is always down, always need to arm straight, keep your wrists maximum circular motion, clockwise 10 laps, 10 laps counterclockwise. Practice the same in the left hand.
B. The arms stretch forward and shoulder height, the arms are always straight, the two wrists rotate in the same direction at the same time, practice 10 times, and then rotate 10 times in the opposite direction.
C. same as B and practice, but to the opposite direction of rotation of the wrist, after exercise 10 times, 10 times and then in the opposite direction to practice.
These three exercises are very beneficial for the arthritis associated with the opponent and the fingers, as well as the related joint tension caused by writing for a long time, typing, and the like.
Health Tips: The key to treating " mouse hand " is to reduce nerve compression. The patient avoids working in a fixed, mechanical, and frequent activity for a long time. Do more gestures such as clenching your fists, lifting your fingers, etc .; use a mouse with a large curvature and a wide contact surface ; when moving the mouse, do not use the wrist force and the arm force to reduce the force on the wrist ; when using the mouse, do not hang the arm.
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