====== Cervical lateral radiograph ======

{{::cervicalspine_radiograph.gif|}}

[[Cervical lateral radiograph]]; 

b Detail of 36-inch lateral radiograph showing measurements 

a. Occiput-C2 sagittal Cobb angle, 

b. Occiput-C7 sagittal Cobb angle, 

c. [[C1-C2 sagittal Cobb angle]], 

d. C2-C7 sagittal Cobb angle, 

e. [[T1 tilt]]. 

Horizontal solid white line: C1-C7 [[Sagittal Vertical Axis]] - distance between plumb line dropped from anterior tubercle of C1 and posterior superior corner of C7; Horizontal white dotted line: C2-C7 Sagittal Vertical Axis—distance between plumb line dropped from centroid of C2 and posterior superior corner of C7; White dashed line: Center of Gravity-C7 Sagittal Vertical Axis—distance between plumb line dropped from anterior margin of external auditory meatus and posterior superior corner of C7.
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The [[K-line]] is a straight line connecting the midpoints of the [[cervical spinal canal]] at C2 and C7 on a neutral [[cervical lateral radiograph]]. 

{{::k-line.jpg?400|}}

The maximum occupying ratio of the [[cervical ossification of the posterior longitudinal ligament]] (OPLL) is calculated from a [[cervical sagittal computed tomography]].