I can't answer your question beyond saying I have had Dupuytren's for 20 years and have all sorts of complications from severe cramping in both hands and my fingers do end up in various positions, curled and otherwise, at various times. Your doctor and a physical therapist should be able to recommend physical therapy or other treatments. I play cards, dribble a basketball, squeeze clay in various positions and stretch my fingers with a rubber band or bands on them. Good luck.

Thank you both for your responses. I actually have an appointment with Prof S next week. This finger curving thing has only developed in the last few weeks. Wasn't in my initial consult email to Prof S. I guess I was just curious to know if anyone else had this. I'll report what he has to say about it.