Dimensions and Anatomical Variants of the Foramen Transversarium of Typical Cervical Vertebrae

Table 1

Dimensions of transverse foramina of C3–C6 vertebrae.

Dimension	Range (mm)	Mean (mm) ± S.D.
Transverse diameter
Right	2.00–8.65	5.69 ± 1.04
Left	2.62–7.89	5.87 ± 0.89
Anteroposterior diameter
Right	2.19–7.21	5.17 ± 0.89
Left	2.51–6.81	5.13 ± 0.79
Mean diameter
Right	2.54–7.79	5.55 ± 0.87
Left	2.65–7.35	5.48 ± 0.77
Distance from medial border of uncinate process to transverse foramen
Right	3.5–7.9	5.0 ± 0.87
Left	3.2–7.7	5.0 ± 1.0