I had a bike (pedal power type like John) accident once, but it was tame in comparison - but it still makes me laugh. I was cycling one day and was moving up towards the Lansdowne, a part of Bournemouth where the winos hang out. There was a long queue from the roundabout, so I decided to just punt up the inside. I was just passing the inside of a coach when a guy stepped out in front of me from between the coach and the vehicle in front. I smacked straight into him, went over the handlebars and him, and hit the deck some 10-20 feet away. Although I ached in a few spots, I was not hurt, but when I looked back the guy just got up, looked a bit confused, and then staggered off. I am sure he had no idea that he had been hit.
Anyway, I hope the recuperation goes well John.