C-Spine X-Ray for Cervical Instability

I had my cervical spine (neck) x-rayed on Wednesday and am now awaiting the outcome of that. The x-ray is to look for 'cervical instability' at C1/2. I did a profile pose with my neck at a normal angle, then in extension - which freaked the radiographer out because I could tip my head so far back. Then in flexion which was much more restricted. To be quite honest, I doubt that they will find anything as I suspect it will end up being due to ligamentous laxity, but the results will tell. In the meantime I have a new and better collar, so have had far less POTS symptoms and I continue with all physio specific exercises.