Flying with cast do-able
Snownskate69,
A couple of years ago I had a cast for a broken wrist. It went all the way up to the arm pit.
I put my radio in one of those foam trays.
It wasn't the most comfortable, but I was able to fly my helicopter for the two months I was off work.
Maybe someone has a tray you can borrow to try out.
Worked for me!
Best of luck and speedy recovery,
Scott H.