scholarly journals MORPHOMETRIC AND MORPHOLOGICAL STUDY OF FORAMEN MAGNUM IN DRIED HUMAN SKULL BONES

2017 ◽  
Vol 5 (2.1) ◽  
pp. 3682-3686
Author(s):  
Sampada P K ◽  
◽  
Poornima B ◽  
Mallikarjun M ◽  
Santosh B Sakri ◽  
...  
Author(s):  
Krati Bhardwaj ◽  
Chandrakala Agarwal ◽  
Dhiraj Saxena ◽  
Jitendra Singh

Background: The present study was conducted for analysis of the morphometry shape and determination of sex by foramen Magnum. Methods: After applying inclusion and exclusion criteria 30 dried human skull of unknown age and sex were slected for present study from the Department of anatomy, S.M.S. Medical College, Jaipur, Rajasthan. In case of skull bones, all 30 cranial bases were visually assessed for FM shape classification. Each FM shape was classified into one of the 8 types: oval, egg, round, tetragonal, pentagonal, hexagonal, combination of 2 different semicircles and irregular. Results: The mean anteroposterior diameter of foramen magnum male and female skull bones were found to be 37.17±1.76 mm  and 33.92±3.50 mm respectively.The mean transverse diameter of foramen mgnum in male and female skull bones were found to be 29.49±2.68 mm and 29.38±2.47 mm respectively.The mean area of foramen magnum male and female skull bones were found to be 818.05±119.66 mm² and   847.57±105.85 mm² respectively.The mean index of foramen magnum in male and female skull bones were found to be 84.00±5.41 and 80.27±5.79 respectively.Overall skull bones showed a medium type of foramen magnum index . Conclusion: We concluded that the several anatomic parameters such as shape and dimensions of foramen magnum should be taken into consideration during surgery involving the craniovertebral junction. Also these can be used during forensic and anthropological investigation of unknown individuals for determining gender, ethnicity, etc Keywords: Skull, foramen magnum, skull.


2016 ◽  
Vol 5 (3) ◽  
pp. 215-218
Author(s):  
Deepa G. ◽  
◽  
ShriKrishan B.H. ◽  

2016 ◽  
Vol 34 (4) ◽  
pp. 1187-1190
Author(s):  
Syed Javed Haider ◽  
Assad Ali Rezigalla ◽  
Asim Mohammed Abdalla

1979 ◽  
Vol 15 (3) ◽  
pp. 297-301 ◽  
Author(s):  
V. V. Dzenis ◽  
Y. I. Purin'sh

1996 ◽  
Vol 84 (6) ◽  
pp. 999-1005 ◽  
Author(s):  
Haruyuki Yamada ◽  
Akira Yokota ◽  
Joji Haratake ◽  
Akio Horie

✓ In this morphological study the authors investigated whether spinal cord cavitation, produced in young mongrel dogs that had been rendered hydrocephalic by cisternal injection of kaolin, consists of a dilated central canal or intramedullary cavities. Hydrocephalus was noted in 50 of 56 dogs treated with kaolin. Of the 50 hydrocephalic young dogs, 29 were shown to have central canal dilation that was prominent at the thoracic level and 21 to have cervical intramedullary cavities in the posterior column and/or the posterior horn. In 11 dogs from the latter group these cavities were demonstrated to have no communication with the central canal. This finding could not be explained by the hydrodynamic theory. On histopathological examination, myelomalacia and hemorrhagic infarction following ventricular shunting were noted adjacent to the cervical cavities, which suggested vascular impairment. A perfusion study revealed insufficient blood flow within the cervical cord at the level of the intramedullary cavities. A close correlation between the vascular insufficiency of the cervical cord and the pressure cone resulting from significant hydrocephalus was observed. The latter may cause cervicomedullary compression at the foramen magnum, affecting the venous drainage of the cervical cord below that level, resulting in intramedullary cavitation. Accordingly, vascular impairment was thought to play a significant role in the development of cervical syrinx formation in our kaolin model. The current results may provide a reasonable explanation for the formation of noncommunicating cervical syringomyelia in Chiari I malformation.


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