I managed to get back on my bike and struggle home. Most of the way my arm was at my side as it was too painful to hold the handlebars.
When I got home, I took off my helmet and my head was quite badly bruised - I always insist on wearing a helmet and can now smugly justify why as without it I have no doubt at all that I would have had a fractured skull. My helmet is cracked all the way through in two places.
I went off to the hospital for a check up and it turned out that I had a broken elbow and suspected broken writs in two places. Also, my thigh was very badly bruised. The ligaments in my arm are also badly damaged, limiting movement.
Still, the good news is that the only damage to my bike was to the handlebar tape which can esily be fixed.