We had a horse come into uni today with non-weight bearing lameness on its left foreleg. Owner found it in the paddock like that. Limb was abducted indicating some neurological damage. A few xrays later and we find a fractured humerus. It's being treated for shock and given pain meds overnight while the owner decides what to do. The uni reckon it's possible to treat but that would mean some major surgery and several months box rest, and not loose box rest, the horse would have to be tied up so that it didn't move around too much. The horse isn't young and it's not worth very much. Personally I would euthanase it. I think the chances of a good recovery are pretty low and it's not worth the pain and stress to the horse. What would you do?