Will a, yes I have seen that aid, will certainly bear it in mind if the pain becomes to severe to continue.
I've decided to buy one pair of the square needles and have a go. Also am going to teach myself the continental way as I definitely find crochet less painful.
Ironically I am left handed but it is my right hand which has been overworked. Also I have been a pianist since I started knitting about age 7 so my fingers have certainly been overworked! I don't really play anymore as I mainly was "the school pianist", now I have semi retired with no piano at home any more my playing days are much diminished.