Personally, I think it's a very positive and appropriate move to be referred for further investigation. From the very little I've read about AVN (Avascular necrosis), I understand that there are potentially a number of conditions, including long term steroid use that could be the underlying cause of the poor blood supply to a bone.
If it were me, I'd feel reassured that my medical team had the fullest picture of my health prior to joint replacement. I'd assume they would be better able with a fuller picture to plan for a successful final outcome.
On a personal level, yes I was diagnosed in my late teens with Raynaud's Syndrome. I'd class it as a minor condition compared to others. All I can share is that my medical team considered it insignificant in terms of my hip surgery experience or risk. I had the standard warming blanket prior to and after surgery. Having had the condition many years, it's well manageable without medication. A minor annoyance really. I've never been told that the RS contributed to my mobility issues but on the other hand I have been inconclusively tested for Lupus. My surgeon has me flagged for possible autoimmune.
Hopefully, someone else has more experience to share.
United Kingdom
