Medial branch rhizotomies at C1-2 are somewhat risky. There is this small structure called the vertebral artery at that location. I imagine that an excellent physician can perform that procedure but I would be very cautious.
It might make sense at this point to obtain a CT scan of the cervical spine. MRIs are notorious for underdiagnosing facet degenerative disease and CT scans can reveal pathology that MRIs will not.
Some insurance companies require two different facet blocks before they will allow a rhizotomy (an intracapsular block and then a medial branch block). I am not sure that this is needed but there are experts that would know better than me.
There is some price to be paid for these rhizotomies. The medial branch also innervates the small muscles of the back of the neck and these muscles loose some or all function after rhizotomy. There seems to be no significant ill effects after rhizolysis that I have seen but you should be aware of all the potential side-effects.
Don’t forget that these medial branch blocks can also aestheticize the exiting nerve root if some of the liquid seeps down onto the nerve root (which is not uncommon). You then might try a selective nerve root block of the C3 nerve to determine if the root itself is the pain generator.
If you had your nerve test after the rhizotomy, the small posterior muscles of the neck will test positive during the EMG even if there is no nerve root involvement.
Consider asking your doctor for a CT scan and a SNRB of the C3 root. This might give you more information.
Dr. Corenman
Donald Corenman, MD, DC is a highly-regarded spine surgeon, considered an expert in the area of neck and back pain. Trained as both a Medical Doctor and Doctor of Chiropractic, Dr. Corenman earned academic appointments as Clinical Assistant Professor and Assistant Professor of Orthopaedic Surgery at the University of Colorado Health Sciences Center, and his research on spine surgery and rehabilitation has resulted in the publication of multiple peer-reviewed articles and two books.