In contrast, the proportion of the lordosis type was most in the BE group, meaning that a backward shift with an extended head position was more likely to be accompanied with a normal cervical curvature
. The cervical spine could be divided into three columns (one vertebral body and two facet joints on the same level) .
The cervical curvature
should be consistent with the curvature before injury when placing a head frame or adjusting the operating table.
AlKode and AlNamankani11 reported that a relationship between crowding and head posture could only be found in subjects with upper arch crowding and cervical curvature
and not with lower dental crowding (pless than 0.01).
Pardhan and Gupta from India reported the known typical MR features5 which include atrophic flattened lower cervical, asymmetrically along with abnormal cervical curvature
, anterior shifting of the posterior wall of the cervical dural canal and intramedullary signal hyperintensity.