BD,
Good luck with the shoulder, I don't think it will be a problem if you can just prove to them you can use it without any issues. I would let them know, which I did when I was in your position (sort of). I had a somewhat shattered finger which caused the tendon to detach and brought a third of the joint with it
Required over 12 months of casting and none use of it, then screws ect....not quite as serious as a shoulder but I think you should be fine.
Oh by the way, not trying to say a finger is anything big, I would have had them cut it off if needed, just saying the docs are pretty understanding with injuries I found.