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Conditions and Diseases > Carpal Tunnel Syndrome Forum > How to avoid repetitive strain for carpal tunnel
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Q: How to avoid repetitive strain for carpal tunnel
asked by: Phrixos on June 11th, 2009
New User
No nonsense.

Nothing to buy and NO SURGERY! After many years of suffering, I've finally cured my severe wrist pain. It turns out to be incredibly simple. All you need is a little makeshift gadget most anyone can build in their garage. (I thought of patenting it, but quite frankly, I can't be bothered.) Got a drill, a screwdriver, some duct tape, and scissors? Get to work.

It all has to do, you see, not with the wrist, but with the elbow.

When using a mouse, the full weight of the hand and forearm (and some of the upper arm) is concentrated in the wrist. More, it's concentrated on the outside ball of the hand. This not only means that the wrist must continually hold up all that weight as the mouse is used, but also that the weight places a torque on the wrist, wanting to rotate the hand counterclockwise (or clockwise, if you are left-handed.) The core of the problem would seem to be this continual need for the wrist to resist this weight and torque. In any event, removing THIS strain from my life has brought my wrist, and my workday—gradually—back to normal.

A note of warning: after you build your little support gadget and put it to use, it is going to take several months for the pain, gradually to disappear. For me it was six months—but every day was just that little bit less painful than the last. (Mind you, I cannot say it will work for everybody. Who could say that? What I can say is, there certainly seems no conceivable way it can do any harm.)

The solution is to build into the arm of your office-chair, a support for you elbow—or, rather, your FOREARM. (If this site had a capacity for attaching photos, I could show you what mine looks like, but alas, I am forced to use description only.)

So:

1. With you hand on your mouse as "normal," observe the position of your elbow. You are likely holding it—just slightly—up in the air, but this is enough to do the damage. Now, while still holding the mouse, drop (or lift) your elbow until your forearm is level.

2. Now, bring your gaze forward of your elbow about two or three inches—to the fatter part of your forearm.

3. THIS SPOT, in mid-air, is where you must build for yourself a little padded FOREARM support. Note: this is NOT to support your elbow; it's to support your FOREARM.

Try here, this little experiment. (Right-handedness is assumed.) While using your mouse (again, as "normal"), support that spot with your left hand. Immediately, as the weight and torque is removed from your right wrist, you can feel the benefit. Gradually, your brain will learn how to allow your wrist to relax.

3. Initially, I had bent a piece of heavy aluminum strip, 90 degrees and duct-taped it to my chair arm, thus to provide a little horizontal platform at that crucial spot. Later, I advanced to screwing it in place. In any event, figure out a way to fix this support to the arm of your office-chair. It doesn't look pretty—but it works. (Eventually!)

4. I fashioned for myself a padded forearm-rest, stuck it to the horizontal part of the aluminum bar—and have never looked back.

No more Repetitive Strain injury!

(Now, if I could only do something similar for my knees....)

Good luck, everyone

Phrixos
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Users who thank Phrixos for this post: danielv 
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JavaMissus
replied on June 11th, 2009
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Good for you...I use the wrist brace and rest...Most important is typing with my hands lower than the top of the desk...
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Phrixos
replied on June 11th, 2009
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Hello, CarolineEF,

Yes, typing "on your lap" is good (at least for CTS) as it takes (some) weight off your wrist--if only during actual typing--which doesn't help with using the real culprit: the mouse, and which object almost always demands a desk top.

My real aim here is to bring this need for forearm-support to the attention of furniture designers, who may then consider designing mouse-orientated forearm rests into their office chairs.

Hope your pain goes away.
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danielv
replied on June 11th, 2009
Advanced Support Team
Brilliant solution.
A golden fleece of sorts! Smile

Essentially by propping up the forearm, you're reducing the angle of the wrist to 0 relative to the arm.

So are you a furniture designer or an engineer?
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Phrixos
replied on June 12th, 2009
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Neither. I am--or was--an architect's assistant for many (many) years. The principles of structure and mechanics are always the same.

Much less a case of reducing the angle, it's one of taking the weight off the wrist and eliminating the torque. Essentially like a seesaw, the forearm-rest balances the forearm on a fulcrum, so allowing the hand and wrist to "float."

Note, that when I said "two or three inches" before the elbow, I really mean a bit more than that. The best way is to balance your mouse-using forearm on your opposite hand and find the point of equilibrium. Then I suggest you back up about an inch, the result being to place a few ounces, only, of weight on the wrist. (Otherwise you may find your mouse-hand wanting continually to rise off your desk.)

That's the optimum spot at which to position your forearm rest.

ATB,
Phrixos

(Oh. Indeed I have designed a few pieces of furniture in my day. Presently, I dream of designing a warm bed that turns into a hot shower when the alarm goes off.)
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