I have AVN...mine is bad
I have it in my hip so bad I was told a replacement probably wouldn't work because of the fact the blood flow is really poor. I may actually need some sort of grafts to restore the flow just to "maybe" allow a replacement in the future. I had a knuckle on my hand replaced a few years ago and they had to use synthetic material instead of titanium due to the lack of blood flow there as well.
I was on high doses of steroids in the early 90's, which was transplant protocol in PHX where I had my 1st transplant and of course since I was born with PKD I have had poor kidney function all my life.. Now I am hardly able to walk sometimes and others I am fine. I take oxycodone as little as possible but short of Motrin (which we as kidney patients aren't really supposed to take) absolutely nothing else works for pain.