Which trackball is better to avoid carpal tunnel syndrome? [closed]

I am starting to see signs of carpal tunnel syndrome on my right hand whenever I use a regular computer mouse.

After some research, the trackball seems most appropriate to alleviate the wrist pains. The problem is that there are 2 main versions:

The Marble:

The Wheel:

Which is better for avoiding wrist pains? The "Marble" versions seems like it still uses some wrist action to move the index and middle fingers over the trackball whereas by the "Wheel" the wrist remains completely stationary and only the thumb moves around.

Solution 1:

I've used the top trackball for years with no problem. I had tendon problems using mice, and this trackball fixed it.

I think a finger-operated ball is healthier than thumb, but just an opinion.

An advantage of this trackball is it's symmetrical and you can switch between left and right hands to rest them.

That said, I'm looking for a trackball with a heavier ball and scroll wheel. I'm thinking about this one.

Good luck.

Solution 2:

While I don't have any wrist problems, I use the 'wheel' version and I find it very comfortable. No movement required other than thumb movement.

As a side benefit, it's quite amusing when a colleague sits at my desk and try to use the trackball, pushing it round the desk like a mouse :-)