Turkish Neurosurgery 2011 , Vol 21 , Num 4
Double Foramen Transversarium Variation in Ancient Byzantine Cervical Vertebrae: Preliminary Report of an Anthropological Study
Serdar KAYA1, Nalan Damla YILMAZ2, Serhat PUSAT1, Cahit KURAL1, Alpaslan KIRIK1, Yusuf IZCI1
1Gulhane Military Medical Academy, Department of Neurosurgery, Ankara, Turkey
2Ankara University, Faculty of Letters, Department of Anthropology, Ankara, Turkey
DOI : 10.5137/1019-5149.JTN .4456-11.1 AIM: Foramina transversaria (FT) are located on the transverse processes of cervical vertebrae. These foramina are known to exhibit variations with regard to size, shape and may even be absent or duplicated. The aims of this study are to investigate the shape, size and variations of FT in an ancient population and to point out the importance of double FT in the human anatomy.

MATERIAL and METHODS: 262 ancient skeletons, dated 6th c AD, were unearthed from the Iasos Archaeological site between 1979 and 1987. Of these skeletons, 22 cervical vertebrae belonging to 21 individual skeletons were examined for the variations of FT.

RESULTS: Fifteen (68.2%) of the skeletons were male and 6 were female. All of the FT were round in shape. Among the 22 cervical vertebrae, double FT was found in 5 (22.7%) vertebrae, while unilateral in 3 and bilateral in 2. Asymmetrical FT was observed only in one (4.5%) vertebra. The mean diameter of FT was 6.2 mm in the right side and 6.4 mm in the left.

CONCLUSION: Double FT exists since the antiquity. The recognition of this variation provides safety and effectiveness for the posterior approaches of the cervical spine. Keywords : Iasos, Cervical vertebra, Double foramen transversarium

Corresponding author : Yusuf Izc, yusufizci@yahoo.com