There are several categories of adaptive mice out there. Which one is best for you depends on the reason that you are having trouble with your current mouse.
|Eliminates need to grasp
mouse, especially for dragging. Can use palm of hand for
moving mouse. Mouse doesn't move on the table, so it's
easier for some people to click without moving.
Four buttons can be programmed for
separate functions and can be hit with heel of hand or
Note: I think the smaller
trackballs lead people to use their fingertips to move
the mouse, which could aggravate the problem.
|Allows you to keep hands
near keyboard, and arms near your side.
|No need to turn wrist
over - maintains neutral, "handshake" position
||Hold mouse as a pen -
some allow you to slide along surface and press harder
when you want to click.
Not as useful if you're
going from keyboard to mouse and back a lot.
|There are a number of other styles of mouse that bear mentioning, allowing the user to use head control, eye control, mouth control, etc.
This is just one example, controlled by mouth - sip and puff to click mouse.