BaconBaulz

Did you sign any form of waiver before going on the zipline?

I'd suggest you speak with a lawyer and see what sort of case you could have. If the reason you fell is due to something they could have prevented, I'd think you'd have some sort of base to have them pay for your hospital costs and/or PT/OT you may need to fully recover. I'm so sorry this has happened to you and hope you recover fully!

EDIT: Read more AFTER I replied and now see it was at your friend's house, not a zipline business. I agree with what others have posted in regards to claiming on their home owners insurance, but understand you don't want to do that. Best of luck to you.