Shiksha Jangde1 , Monica Pradhan2 , Kamaljit Basan3 , Shashi Paikra4
BACKGROUND Variations of the foramen transversarium regarding its shape, size, number and location is reflected in the structure and functioning of the vertebral vessels which run inside the canal formed by FT of all cervical vertebrae. Variability of the foramen transversarium may be associated with very unpleasant symptoms like neurological disturbances, contributes to decrease in the quality of life. Morphological variations are affected by many factors i.e., mechanical, pathological and developmental factors. This study aimed to find the various pattern of accessory foramen in the sixth cervical vertebrae. METHODS A total of 97 dried human cervical vertebrae of unknown age and sex was studied in the Anatomy department of our institute. All the CV having variations in the FT were identified, photographed and documented. RESULTS 22 out of a total of 97 cervical vertebrae studied presented variations in the FT. Variability of the FT of sixth cervical vertebrae showed higher frequency (9.27%). No extra foramina were observed in atlas and axis vertebrae. CONCLUSIONS This study revealed existence of various patterns of accessory foramen in the sixth cervical vertebrae. It is important to understand these variations and their relationship with vertebral vessels and nerves during surgical interventions in the cervical spine region. Knowledge of these variations will be helpful in the radiological interpretation for diagnostic purpose and for better surgical outcome.
