U.S. doctors online nowAsk doctors free
A 22-year-old male asked:

I had a supine mri cervical spine done and was reported as normal. i have symptoms of cervical instability and i measured cxa of 127 degrees, grabb oakes 8.9mm and harris measurement of 12.7mm, no chiari malformation. could 'normal' report be wrong?

2 doctor answers2 doctors weighed in
Dr. Hiep Le
Dr. Hiep Leanswered
Nephrology and Dialysis 44 years experience
The numbers are not normal with MRI taken at a supine position and they are probably consistent with your condition, cervical instability; however, you should talk to the doctor who ordered the MRI or the radiologist who was reading the images.
Created for people with ongoing healthcare needs but benefits everyone.
Dr. Ken Yonemura
Neurosurgery 32 years experience
The measurements that you have made are only valid on cervical x-rays in a neutral position. Furthermore, cervical MRI scans frequently do not include the occipital cervical junction and axial images routinely start at C2 and extend distally. It would not be unusual for a cervical MRI scan to be read as normal and miss instability at the occipital cervical junction.
Created for people with ongoing healthcare needs but benefits everyone.
Last updated Sep 30, 2021


Content on HealthTap (including answers) should not be used for medical advice, diagnosis, or treatment, and interactions on HealthTap do not create a doctor-patient relationship. Never disregard or delay professional medical advice in person because of anything on HealthTap. Call your doctor or 911 if you think you may have a medical emergency.