I have this, Cath. (It's where the little finger bends permanently towards the palm of the hand, for anyone who doesn't know.) About three years ago I had it treated privately as, at that time, the NHS offered only invasive surgery and I wasn't keen on that. In my case the surgeon injected the palm of my hand, which was very painful, and the next day he straightened my finger, which didn't hurt at all. He did warn me that the straightening would probably last only 18 months to 2 years and he was right as after 2 years it is was bad as ever. However, it does not bother me much and is not painful so I will not have it straightened again although I believe that now you can have it done by injection on the NHS. I was told that Dupuytren's is genetic but I don't know of anyone else in my family who has it. Margaret Thatcher had it and there is a photo of her waving that shows her crooked right finger quite clearly.