I didn't know that ribs could be dislocated either!

I can't see how you could blow the pipes with sore ribs like that.

I had a piping student years ago who had a cronic infamation of the connective tissue around his ribs, so that it always hurt to breath deeply. He had to give up learning the pipes.

Good luck! I hope your ribs heal enough to allow you to get through the gig.

(Wow a sledding accident in Ohio, and here in California it was 80 degrees yesterday!)