Hi @Monersus, I did some reconstruction on you CT images from the Dicomlibrary link you posted.
I have been discussing these images with @Jules, it seems like you have lost your natural lordosis in your neck, wich is often refered as ‘‘Military neck’’.
I do also see that even small calcified ligaments can be symptomatic, but not a certainty .
I would also point out a found on your C1 Vertebrae, chek this out;
- Henrik