Abstract:
Introduction
The jugular foramen (JF) lies at the base of the skull between the occipital bone and the petrous part of the temporal bone. It allows for the passage of important nervous and vascular elements, such as the gloss pharyngeal, vagus and accessory nerves, and the internal jugular vein. Glomic tumors, schwannomas, metastatic lesions and infiltrating inflammatory processes are associated with this foramen, which can account for injuries of related structures. The jugular foramen is difficult to understand and to access. It is difficult to conceptualize because it varies in shape and size because of its complex irregular shape, its curved course, its formation by two bones and numerous nerves and venous channels that pass through it.
Morphometric measurement is helpful in neurosurgery.
Material and Methods
100 jugular foramina of persons of unknown age and gender were examined in Dr.S.N Medical College, Jodhpur. The morphological characteristics of all investigated jugular foramina were described, measured, and compared, taking into consideration their side. Metric measurements were taken by using Vernier calipers. The mean standard deviation and range of each dimension and derived index were compared. Right and left side differences were analyzed.
Result
Jugular foramina were studied for review of its morphology, morphometery and its comparison with previous studies. Different shapes and sizes of jugular foramen were seen. In 65% cases the right foramina were larger than the left, in 25% of cases the left foramina were larger than right and in 10% cases they were equal in size on both sides.
The mean length of the foramen on the right and left were 17.19±3.66mm and 15.47±3.25mm; the width measured 6.68±1.99mm and 5.78±2.07mm on the right and left respectively; the mean area on the right was 382.22±179.18cmm and on the left 292.47±147.14cmm.
Conclusion
There was statistical significance between the two sides in the length and area but there was no significant difference between the two sides in the width. There was a positive correlation between length and width on each side. Statistical analysis did show significant positive correlation between the width and length Of the skull and the length of the jugular foramen on both the sides.