I saw these mentioned in a review of pruners as being good for people with hand problems. I haven't tried them myself, or even seen them anywhere here, but the Amazon reviews look promising:
https://www.amazon.com/dp/B00BBHVO2E/
I have used Felco's with the rotating handle - kind of. I say kind of because mine are actually their sheep hoof trimmers but look pretty much the same as the garden pruners and work as such. I didn't find the rotating handle particularly helpful but maybe that was just me.
What I do find I use more than I expected are Fiskars 15" Power gear loppers. I got them for cutting larger stuff but find they're so easy to use, lightweight, and short enough handled that I often go for them instead of hand pruners - less bending, both hands used for cutting, and approved by the Arthritis Foundation - I don't have arthritis, just aging and less strength.
https://www.amazon.com/dp/B00BBHVO2E/
I think it's this one, but I can no longer read the model number on mine:
https://www.amazon.com/dp/B00004SD73/
