Scary about your arm!
When I was a kid I used to dream that I could jump very very high, and land without getting hurt. I could feel the landing in my feet, but it didn't hurt. I've been able to do lucid dreaming a bit now when I'm older, but only when I've been reading about the subject for days and my brain is really thinking much about it. Had one cool dream where I could feel a bump in the floor very real, and I went outside and made lightning strike a lamppost. Then I tried creating sexy babes, and I woke up. Can't have it all, I guess
