Abstract
Foramen transversarium are located on the transverse process of cervical vertebrae and are the cardinal features of cervical vertebrae. These foramina are known to exhibit variations in size, shape and may be absent or duplicated. Keeping this in mind, a study was done to record these variations. A hundred and twenty dry typical cervical vertebrae procured from department of anatomy were used for this study. Unilateral double foramen transversarium were seen in 2.5% cases while 4.16% cases showed bilateral double foramen transversarium. 0.83% cases showed symmetrical foramen transversarium and another 1.66% cases showed incomplete foramen transversarium. The normal factor responsible for such anomalies is developmental or related to variation in course of vertebral artery. The recognition of this variation provides safety and efficiency for the posterior approaches of the cervical spine.
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