@Glitterbats did they have you turn your head left and right to repeat the readings?
It was just a couple weeks ago I was reviewing CT imaging for a forum member (who has CCI) and they had two CTs that I was able to compare. In one CT their right styloid was a healthy distance from C1, but in the more recent CT the styloid was actually jammed against C1. In other words, I think because she has CCI, the styloid-C1 space can change dramatically with a simple head turn (I suspect due to ligament laxity). The styloid-C1 distance changes in those without CCI as well (in which we often see severe compression with left or right movements), but it seems to be more exaggerated in context of CCI.
I’m glad they found something abnormal regardless so that you have some explaining for your symptoms (in addition to your CCI)
I’m trying to find the forum thread but I’m having difficulties remembering who the member was.
Edit: I found the forum thread