That kind of damage takes many years. Do you have scans from prior years? I also discovered I have arthritis in the ankle recently and there were no pain symptoms, only joint instability and issues higher up on the leg. This was probably caused by either genetics or ankle trauma from childhood that eventually reared its head in my 30s.
01100011|19 days ago
One thing I think changed for me was that I switched to WFH full-time and wearing crocs all day. My arches subsequently collapsed. I have joint stiffness now as well, but the x-ray didn't show anything so I think it's perhaps sinus tarsi pain from the compression due to over-pronation.