To Stumpy, you are not the first to suggest clipless pedals. But I use flat pedals - I am afraid if I need to unclip my foot to break a fall - I wouldn't be able to because of the limited function and control of my leg.
Understood @Sophie777 - Just in case you're interested, I use these, they are 0 degree float which basically means you only need to turn your foot a minimal amount to unclip, which for me, not having an ankle joint, is ideal and enables me to unclip without any issues. They also allow you to clip in on any of the 4 sides so there is no problem with locating your foot/pedal.
Good luck with whatever you choose and happy riding!