Comment Vertical mouse (Score 3, Informative) 415
I have the same problem myself.
After trying numerous things I've found that the Evoluent vertical Mouse 2 works, as the hand is at a completly different angle than a normal mouse, trackball or touchpad. I also use a Futuro RSI wrist strap which limits the movement in the wrist and forces me to keep it at the correct angle etc for the keyboard.
