The foramina transversaria are bilateral bony openings in the Transverse process of the seven cervical vertebrae.
Anatomy
The two Arteriae vertebrales
Variations
The foramen transversarium may be duplicated on one side in approximately 13.72 % of cases and may occur bilaterally in duplicate in approximately 6.86 % of cases [^1]. A triplicate foramen transversarium was observed in 0.98 % of the population [^1]
Dimensions
The average size of the foramina transversaria is 6.49 mm x 5.74 mm on the right and 6.65 x 5.76 mm on the left.
