It is rare that a product really lives up to its advertising hype, especially when it is supposed to do something as nebulous as make your hand or arm “feel better.” I had been using a Microsoft mouse (the old “Dove bar” shape) eight to ten hours per day for last six years. Suddenly, about 4 months ago, I noticed my hand and forearm muscles were stiff and sore. Within a day or two, I could barely move my hand after using the mouse for only a few minutes. I rearranged my work station so the keyboard, mouse, chair and monitor were at the right height, etc., etc., according to all the ergonomic diagrams. Slight improvement. Next I bought a new (Logitech) mouse, then two different trackballs. No improvement. with any of them. I was beginning to worry that I would not be able to use a computer any more—a scary thought since my entire livelihood depends on it. About 3 months ago I noticed an ad for the Contour Mouse. I ordered one. It took several days to get accustomed to using it. But soon I noticed that the pain and soreness was diminishing. Within a week the pain was gone and it has not returned.
Wilkerson Design Associates