That's too bad, I've had similar problems in the past. Curcumin (the active ingredient in turmeric) has helped me deal with inflammation without over stressing my organs with painkillers. It has been used for many, many years by people all over the world to help with pain and inflammation. I get mine off of Amazon, if you haven't heard of it -I would look into it.
It's fairly expensive in health food store but I can usually get about 100 or so capsules for $12 USD off of amazon, as I mentioned above.
Good luck to you both and I hope Peter heals quickly.
RE: Back injury out of the blue