I broke my arm and rode in a cast. I broke...I think the Ulna. the bone on the pinkie side of the arm. The bone was broken in the head (wrist end) and about two inches up from there. I was put in a fiberglass cast up to but not over my elbow. There was a piece of cast that went between my thumb. I manually worked the cast between my thumb and forefinger until it was pliable. I could then rest my hand against the gear shifter.

I did have my Dr.'s permission to ride, if I was careful. I had to twist that arm out a bit so that the elbow pointed out instead of back.

I wasn't very flexible. slow to change gears, couldn't move into drops, so I picked easy routes. I was actually more comfortable riding with the fiberglass cast than the splint that they put me in afterwards. I didn't feel as protected.

Let me know if you have any questions.