Special Consideration: Harris Ring
The body of C2 should have a visible ring on the lateral view – the Harris ring [5].
Click on the x-ray to enlarge.
This may be incomplete between the 5 and 7 o’clock position in the normal x-ray. However, if there is disruption elsewhere, this should raise suspicion for a fracture.
Learning Bite
The Harris ring may be incomplete at the 5-7 o’clock position but should be complete elsewhere.