*Sympathise* re splint, Sandra. When I had a busted right fist (the tale of which need not detain us here), my right arm was in a cast for a fortnight, and I had to learn to type using the middle finger of the right hand and the whole left hand. Somewhat later, I started using computer mice, and (being heavy-fisted at the best of times) found there was enough resisual damage that I got chronic mouse-ache; so perforce I became left-moused, despite being right-handed. And so did the rest of our household for a time, as that was where the mouse was on any computer I used.

Later again, I found I'd developed a stress fracture of the middle finger from too much heavy clicking [snip: saga about Microsoft]. So perforce I'm now ambimoustrous, to spread the load.