Hi, I know what you're talking about but I didn't know about the connection to RA until I came here. I have scoliosis (spinal curvatures) that was mega fused 47 yrs ago so I assumed the cramps had something to do with that & never bothered to mention them to the rheumatologist. After joining here, I found a wealth of information & lo and behold, here were symptoms that I had! I usually try to stretch out the cramps or alter how I'm moving to get rid of them. But underneath the skin & muscles, there can still be a soreness that seems to come from the ribs themselves. So yes, I hear you!