Our son also has the non union of the C1. Please let us know your outcomes.
I have also been dxed with non union of c1 verterba. I had it all my life, but just found out at 40 I had this defect. It has been causing me alot of pain, headaches, and neck weakness.
Surgery was recommended. I also do not have much information on this subject.
Please let me know your findings, if you can get any.