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Foramina and canals of the skull base in Holstein cow: a computed tomography study

Nimet Turgut1, Sadullah Bahar1, Abidin Kılınçer2, Hamza Yavuz Selim Can1

Abstract

Background: The aim of the study was to describe the comprehensive morphological and morphometric features of the foramina and canals at the base of the cranial cavity in Holstein cow using CT images. Materials and methods: The study was performed on fourteen adult Holstein cow head cadavers. Images taken with MSCT were transferred to the DICOM Viewer program. The MPR and 3D reconstructive tools of the program were used to analyse the foramina and canals. Results: Although they varied in shape and size, foramina and canals were found bilaterally in all animals. It was observed that the orbitorotund foramen, jugular foramen and oval foramen had a canalicular structure, with the distance between the extra-intra cranial openings measured as 15.0 mm, 5.9 mm and 6.2 mm, respectively. The hypoglossal canal, which was found to be single in 43%, double in 50% and triple in 7% in each body half, was the canal with the most variation in number and shape. The orbitorotund foramen, a canal with an area of 180.6 mm2 and a diameter of 18.1 × 12.4 mm is the widest at the skull base, while the optic canal is the narrowest and longest opening with an area of 33.4 mm2, a diameter of 8.4 × 5.5 and a length of 17.5 mm. Conclusions: This study shows that our knowledge of skull base morphometry in animals is extremely limited. Although the study was conducted on a limited number of materials, it may benefit both regional anatomy knowledge in terms of the data presented and veterinary anatomists, radiologists and clinicians in terms of methodology.  

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References

  1. Barone R. Anatomie comparee des mammiferes domestiques: Tome I Osteologie. Vigot Freres, Paris 1999.
  2. Bekerman I, Kimiagar I, Sigal T, et al. Monitoring of intracranial pressure by CT-defined optic nerve sheath diameter. J Neuroimaging. 2016; 26(3): 309–314.
  3. Berge JK, Bergman RA. Variations in size and in symmetry of foramina of the human skull. Clin Anat. 2001; 14(6): 406–413.
  4. Berlis A, Putz R, Schumacher M. Direct and CT measurements of canals and foramina of the skull base. Br J Radiol. 1992; 65(776): 653–661.
  5. Bidot S, Clough L, Saindane AM, et al. The Optic Canal Size Is Associated With the Severity of Papilledema and Poor Visual Function in Idiopathic Intracranial Hypertension. J Neuroophthalmol. 2016; 36(2): 120–125.
  6. Bold J, Szemet M, Goździewska-Harłajczuk K, et al. Topography of cranial foramina and anaesthesia techniques of cranial nerves in selected species of primates (Cebidae, Cercopithecidae, Lemuridae) - part I - osteology. BMC Vet Res. 2023; 19(1): 122.
  7. Cheng Ye, Liu M, Zhang S, et al. Optic canal (OC) and internal carotid artery (ICA) in sellar region. Surg Radiol Anat. 2013; 35(9): 797–801.
  8. Couturier L, Degueurce C, Ruel Y, et al. Anatomical study of cranial nerve emergence and skull foramina in the dog using magnetic resonance imaging and computed tomography. Vet Radiol Ultrasound. 2005; 46(5): 375–383.
  9. Dixon J, Lam R, Weller R, et al. Clinical application of multidetector computed tomography and magnetic resonance imaging for evaluation of cranial nerves in horses in comparison with high resolution imaging standards. Equine Vet Educ. 2016; 29(7): 376–384.
  10. Dyce KM, Sack WO, Wensing CJG. Textbook of veterinary anatomy. 2nd edition. W.B.Saunders Company, New York 1996.
  11. Edwards B, Wang JMh, Iwanaga J, et al. Cranial Nerve Foramina Part I: A Review of the Anatomy and Pathology of Cranial Nerve Foramina of the Anterior and Middle Fossa. Cureus. 2018; 10(2): e2172.
  12. Edwards B, Wang JMh, Iwanaga J, et al. Cranial Nerve Foramina: Part II - A Review of the Anatomy and Pathology of Cranial Nerve Foramina of the Posterior Cranial Fossa. Cureus. 2018; 10(4): e2500.
  13. El Sadik AO, Shaaban MH. The relationship between the dimensions of the internal auditory canal and the anomalies of the vestibulocochlear nerve. Folia Morphol. 2017; 76(2): 178–185.
  14. Elnashar A, Patel SK, Kurbanov A, et al. Comprehensive anatomy of the foramen ovale critical to percutaneous stereotactic radiofrequency rhizotomy: cadaveric study of dry skulls. J Neurosurg. 2019; 132(5): 1414–1422.
  15. Evans HE, Christensen GC. Miller’s anatomy of the dog. 2nd edition. W.B Saunders Company, Tokyo 1979.
  16. Farid SA. Morphometric Study of Human Adult Occipital Condyle, Hypoglossal Canal and Foramen Magnum in Dry Skull of Modern Egyptians. International Journal of Clinical and Developmental Anatomy. 2018; 4(1): 19.
  17. Gomes E, Degueurce C, Ruel Y, et al. Anatomic study of cranial nerve emergence and associated skull foramina in cats using CT and MRI. Vet Radiol Ultrasound. 2009; 50(4): 398–403.
  18. Gonçalves R, Malalana F, McConnell JF, et al. ANATOMICAL STUDY OF CRANIAL NERVE EMERGENCE AND SKULL FORAMINA IN THE HORSE USING MAGNETIC RESONANCE IMAGING AND COMPUTED TOMOGRAPHY. Vet Radiol Ultrasound. 2015; 56(4): 391–397.
  19. Guarna M, Lorenzoni P, Franci D, et al. Hypoglossal canal: an osteological and morphometric study on a collection of dried skulls in an Italian population: clinical implications. Eur J Med Res. 2023; 28(1): 501.
  20. Herta J, Wang WT, Höftberger R, et al. An experimental animal model for percutaneous procedures used in trigeminal neuralgia. Acta Neurochir (Wien). 2017; 159(7): 1341–1348.
  21. Hillmann DJ. Skull. In: Getty R. ed. Sisson and Grossman’s the anatomy of the domestic animals. W.B Saunders Company, Tokyo 1975: 318–1253.
  22. Ichikawa Y, Kanemaki N, Kanai K. Breed-Specific Skull Morphology Reveals Insights into Canine Optic Chiasm Positioning and Orbital Structure through 3D CT Scan Analysis. Animals (Basel). 2024; 14(2).
  23. Kizilkanat E, Boyan N, Soames R, et al. Morphometry of the Hypoglossal Canal, Occipital Condyle, and Foramen Magnum. Neurosurgery Quarterly. 2006; 16(3): 121–125.
  24. Kobayashi H, Zusho H. Measurements of internal auditory meatus by polytomography. 1. Normal subjects. Br J Radiol. 1987; 60(711): 209–214.
  25. König HE, Liebich HG. Veterinary anatomy of domestic mammals: Textbook and colour atlas. 6th edition. Schattauer GmbH 2004.
  26. Lee J, Koh D, Ong CN. Statistical evaluation of agreement between two methods for measuring a quantitative variable. Comput Biol Med. 1989; 19(1): 61–70.
  27. Li S, Liao C, Qian M, et al. Narrow ovale foramina may be involved in the development of primary trigeminal neuralgia. Front Neurol. 2022; 13: 1013216.
  28. Lyrtzis Ch, Piagkou M, Gkioka A, et al. Foramen magnum, occipital condyles and hypoglossal canals morphometry: anatomical study with clinical implications. Folia Morphol. 2017; 76(3): 446–457.
  29. McGraw K, Wong SP. Forming inferences about some intraclass correlation coefficients. Psychological Methods. 1996; 1(1): 30–46.
  30. Muthukumar N, Swaminathan R, Venkatesh G, et al. A morphometric analysis of the foramen magnum region as it relates to the transcondylar approach. Acta Neurochir (Wien). 2005; 147(8): 889–895.
  31. Nomina Anatomica Veterinaria. International committee on veterinary gross anatomical nomenclature. 2017.
  32. Nickel R, Schummer A, Seiferle E. The locomotor system of the domestic mammals. Verlag Paul Parey, Berlin 1986.
  33. Núñez-Cook S, Vidal Mugica F, Salinas P. Skull anatomy of the endangered Patagonian huemul deer(Hippocamelus bisulcus). Anat Histol Embryol. 2022; 51(6): 728–739.
  34. Olude MA, Olopade JO, Fatola IO, et al. Some aspects of the neurocraniometry of the African giant rat (Cricetomys gambianus Waterhouse). Folia Morphol. 2009; 68(4): 224–227.
  35. Onar V, Çakirlar C, Janeczek M, et al. Skull typology of Byzantine dogs from the Theodosius Harbour at Yenikapi, Istanbul. Anat Histol Embryol. 2012; 41(5): 341–352.
  36. Ong CK, Fook-Hin Chong V. Imaging of jugular foramen. Neuroimaging Clin N Am. 2009; 19(3): 469–482.
  37. Parés-Casanova PM. Basicranial analysis in young bovines reveals a relation to breed and sex. Anat Histol Embryol. 2013; 42(5): 398–401.
  38. Park SJ, Yoo JN, Yoo MS, et al. A study on double angle of optic foramen in the Rhese method. J Korean Soc Radiol. 2017; 11: 313–319.
  39. Parry AT, Volk HA. Imaging the cranial nerves. Vet Radiol Ultrasound. 2011; 52(1 Suppl 1): S32–S41.
  40. Pircher A, Montali M, Berberat J, et al. The Optic Canal: A Bottleneck for Cerebrospinal Fluid Dynamics in Normal-Tension Glaucoma? Front Neurol. 2017; 8: 47.
  41. Pirinc B, Fazliogullari Z, Koplay M, et al. Morphometric and morphological evaluation of the optic canal in three different parts in MDCT images. Int Ophthalmol. 2023; 43(8): 2703–2720.
  42. Saito T, Nemoto T, Nagase Y, et al. Development of a stereotaxic instrument for study of the bovine central nervous system. Brain Res Bull. 2004; 62(5): 369–377.
  43. Schmidt MJ, Ondreka N, Sauerbrey M, et al. Volume reduction of the jugular foramina in Cavalier King Charles Spaniels with syringomyelia. BMC Vet Res. 2012; 8: 158.
  44. Šink Ž, Umek N, Alibegović A, et al. Sphenoidal Foramen Ovale in the Slovenian Population: An Anatomical Evaluation with Clinical Correlations. Diagnostics (Basel). 2023; 13(5).
  45. Sisson S. Skull. In: Getty R. ed. Sisson and Grossman’s the anatomy of the domestic animals. W.B Saunders Company, Tokyo 1975: 762–1503.
  46. Stewart HL, Siewerdsen JH, Nelson BB, et al. Use of cone-beam computed tomography for advanced imaging of the equine patient. Equine Vet J. 2021; 53(5): 872–885.
  47. Ten B, Beger O, Esen K, et al. Anatomic features of the cranial aperture of the optic canal in children: a radiologic study. Surg Radiol Anat. 2021; 43(2): 187–199.
  48. Uddin M, Sarker M, Hossain ME, et al. Morphometric investigation of neurocranium in domestic cat (Felis catus). Bangladesh Journal of Veterinary Medicine. 2014; 11(1): 69–73.
  49. Williams PL, Warwick R, Dyson M. Gray’s anatomy. 3rd edition. Churchill Livingstone, New York 1989.
  50. Wysocki J, Kobryń H, Bubrowski M, et al. The morphology of the hypoglossal canal and its size in relation to skull capacity in man and other mammal species. Folia Morphol. 2004; 63(1): 11–17.
  51. Wysocki J. Morphology of the temporal canal and postglenoid foramen with reference to the size of the jugular foramen in man and selected species of animals. Folia Morphol. 2002; 61(4): 199–208.
  52. Zhang H, Liu X, Cheng Ye, et al. A new method of locating the optic canal based on structures in sella region: computed tomography study. J Craniofac Surg. 2013; 24(3): 1011–1015.
  53. Zhang X, Lee Y, Olson D, et al. Evaluation of optic canal anatomy and symmetry using CT. BMJ Open Ophthalmol. 2019; 4(1): e000302.