There isn’t. With this disease, occasionally people get damage without warning pain. Pain is absolutely not a reliable way of knowing what is going on.
Neither are inflammatory markers. My markers were always in the reference (normal) range. My thin-as-a-twig doctor blew that off too, saying that weight loss would fix that.
I had a bit of a sore hip when I was diagnosed. My rheum said “minor OA”, and treated me as a “mild” case of PsA. During that year, my hip destructed to the point where they thought I had something called AVM. My orthopod disagreed, saying that, judging from the wear pattern, it was PsA, even though my inflammatory markers were still in the normal range. The proof came when he replaced the hip: I lost 2L of blood in surgery. Bone isn’t normally very vascular, but it will vascularize if the joint is inflamed badly enough for long enough. Apparently my pelvis bled like a fountain.