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Hello, Dr. Corenman. After having an MRI and CT scan for a separate issue, it was discovered that my c1 and c2 vertebrae are not connected. It’s likely that they have always been this way, as I’ve had no accidents or injuries that could cause this. I’ve had a set of x-rays done as well, during an initial meeting with a neurosurgeon. We (well, I) decided to “watch and wait”, however, the pain at the base of my skull is increasing, and I’ve had a couple short bouts of dizziness when turning my head to the right while laying down. I’m calling to schedule a follow-up with the neurosurgeon, but in the meantime I’m very nervous about something horrible happening due to this. What would a fusion of these vertebrae entail? I’m scared of doing something about it and scared of doing nothing about it. I have no idea what each day might bring…will my head flop over? I feel ridiculous, but I’ve never had any sort of health problems, and this is a big one. Thank you for any assistance and if you need other information I’m happy to provide it to the best of my ability.
The C1 “not being connected” to C2 typically is caused by an injury to the transverse ligament. C1 is a ring shaped vertebra and C2 has a “head” on it (called the odontoid or dens) that touches the inside front of the C1 ring. What keeps these two surfaces together is this transverse ligament. It is uncommon but not rare that this ligament ruptures. It ruptures more commonly in certain conditions (rheumatoid arthritis, downs syndrome among others).
When it ruptures, the C1 vertebra is free to move around and can compress the spinal cord or disrupt the flow of blood from the two vertebral arteries. Needless to say, this is not a good condition and generally, C1 needs to be fused to C2 in order to stabilize this condition.
Since 50% of rotation of your head on your neck comes from C1-2, you will lose some motion. This is the “no” motion that will be partially lost (when you shake your head from side to side).
If you have other problems not related to your transverse ligament (odontoid fracture, dentate ligament tears), the treatment might be the same or differ slightly.
Dr. Corenman
PLEASE REMEMBER, THIS FORUM IS MEANT TO PROVIDE GENERAL INFORMATION ON SPINE ANATOMY, CONDITIONS AND TREATMENTS. TO GET AN ACCURATE DIAGNOSIS, YOU MUST VISIT A QUALIFIED PROFESSIONAL IN PERSON.
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.Hi again! Is it possible that this issue with my neck can cause other symptoms, like pain in the left arm? It’s not a shooting pain, and it’s not my whole arm. I looked in the electronic records of the x-rays I had done with the neurosurgeon, and not only do I have the C1C2 issue, but I have multi level degenerative disc disease, most prominent at the C4C5. I know that that’s a somewhat normal part of aging (I’m 41), but would that cause the pain in my arm? Or any other sort of pain? The neurosurgeon didn’t mention it when he followed up about the x-rays, so it may not be a cause for concern just yet. Thank you again for any help!
Foraminal stenosis (narrowing of the exit nerve hole) is quite common and will cause arm pain. The path of pain depends upon the nerve that is compressed. C5 will only radiate into the upper arm while C8 will cause pain into the hand.
If this pain is impairing, you could consider a nerve block (SNRB). This injection will both diagnose the disorder (see pain diary) as well as potentially treat it (the steroid injected).
Dr. Corenman
PLEASE REMEMBER, THIS FORUM IS MEANT TO PROVIDE GENERAL INFORMATION ON SPINE ANATOMY, CONDITIONS AND TREATMENTS. TO GET AN ACCURATE DIAGNOSIS, YOU MUST VISIT A QUALIFIED PROFESSIONAL IN PERSON.
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.Hello, Dr. Corenman! I recently had a cervical spine MRI and am due for a followup appointment with the neurosurgeon next week, but I was wondering if you might be able to “translate” the findings from the MRI. I tried looking up terms but it just got too confusing! I appreciate any assistance you might be able to give.
Craniocervical Junction: Normal.
Osseous Structures: Again demonstrated is an unfused dens fragment approximately 6 mm distal to C2 body.. There is edema within the surrounding soft tissues at this level. The transverse ligament, anterior and posterior longitudinal ligaments are intact.
There appears to be partial avulsion of the anterior and posterior longitudinal ligaments from base of C2. Soft tissue edema adjacent to dens. Marrow signal is normal.
Spinal Cord: There is a focus of T2/STIR hyperintensity of the cord at the level of the dens.I understand you are busy yourself, so anything you may be able to tell me to simplify what this is saying would be so helpful.
Thank you!
Hi again. I’m assuming this got lost in the shuffle. Anyway, I met with my neurosurgeon and am scheduled for surgery in February. I still don’t understand what the MRI results mean, but the official diagnosis is os odontoideum and I also have what he called an “old bruise” on my spinal cord at the exact place where the issue is. Surgery scares me, but just all the unknowns, as I’ve never had surgery where I’ve been completely under anesthesia before. Anyway, just wanted to give the update.
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