There's not much mileage in the question 'WHY?' seeing as what's done is done. But this article is interesting nonetheless. I'd never had a broken bone (other than a broken nose, which does not involve a joint) till I had a fairly heavy duty bunionectomy, which I guess is the same as a broken bone as far as the body's systems are concerned. And full-on PsA followed on from that within a year.
https://psoriasis.org/psa-linked-to-bone-injuries-in-psoriasis-patients
Thank you doctors for finally confirming my personal journey. I have had a rib dislocate when in was about 12-13 yrs old. It has been my nemis through out life locking up and causing pain. This led to PSA when a year ago it just never got better even after being repositioned. I had honestly thought I was on my way to back surgery finally to end this until the diagnosis. It is still my main complaint about 60% of the time. This is very good news for us to know! Thanks for sharing!