Cervical
McGregor's line
<4.5 mm
Radiography (Lateral)
X-ray computed tomography
Magnetic resonance imaging
A line drawn between the hard palate and the most caudal occipital point.
Reference
M.D. TJ, M.D. BS, M.D. AW. Surgical Management of Spinal Deformities [With Access Code]. Saunders. (2009).
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