I've been pondering on this a while but not really got any closer to the shedding any light on the matter. I wondered if there was a link with RA (and other similar types of inflammatory arthritis) and OA. I say this because I've noticed several people say they have OA as a result of RA.
I had MRI scans a year ago and the radiologist wrote that I have secondary OA in my ankles (in addition to active RA inflammation in my feet); I previously had lots of inflammation in my ankles (confirmed by a radioactive isotope scan). I asked if the apparent 'OA' was as a result of RA and my rheumy said "probably". I googled and sure enough, it told me that the causes of secondary OA include RA. However, someone on the NRAS helpline says that OA damage and RA damage appears differently on x-ray and MRI. So, I'm still none the wiser.
Am I right in saying that RA/inflammatory arthritis can cause erosions that look like RA but it can also cause osteoarthritis-like joint damage?
I hope this is clear, let me know if it is just a jumble of words.