Numerical variations and localization of foramen spinosum in 3D-CT images

Year 2021, Volume: 15 Issue: 1, 59 - 63, 29.04.2021

Yadigar Kastamoni , Ahmet Dursun , Veysel Atilla Ayyıldız , Kenan Öztürk

Abstract

Objectives: The structures passing through the foramen spinosum and its neurovascular relationships are of great importance for surgical approches directed to middle cranial fossa. The aim of the present study was to examine the number and location of the foramen spinosum (FS) in 3D-CT images.
Methods: The study was retrospectively conducted on 3D-CT images of 177 adults. Firstly, the transverse section passing through the upper edge of the orbit, extending parallel to the Frankfurt plane was chosen. Then, the x and y-axes were determined on that transverse section. The coordinates, number, and location of the FS with respect to the foramen ovale (FO) were identified accordingly on x and y-axes.
Results: While 1 FS was present in 90.96% of a total of 354 sides of 177 heads, there were 2 FS and 3 FS in 8.76% and 0.28% of the sides, respectively. The FS was located posterolaterally in 97.68%, posteriorly in 2.06%, and laterally in 0.26% with respect to the FO. In terms of FS coordinates, there was no statistically significant difference between gender and sides in the distance of the FS to the x-axis, but there was a statistically significant difference between gender and sides in the distance of the FS to the y-axis.
Conclusion: Evaluation of the number of the FS and its location would help identifying and preserving neighbouring neurovascular structures during surgical interventions directed to the middle cranial fossa.

Keywords

computed tomography, middle cranial fossa, middle meningeal artery, skull base, sphenoid bone

References

• Karthikeyan G, Sankaran PK, Raghunath G, Yuvaraj M, Arathala R. Morphometric study of various foramina in the middle cranial fossa of the human skull. Indian Journal of Clinical Anatomy and Physiology 2017;4:574–8.
• Liu Z, Yi Z. A new bony anatomical landmark for lateral skull base surgery. J Craniofac Surg 2020;31:1157–60.
• Khairnar KB, Bhusari PA. An anatomical study on the foramen ovale and the foramen spinosum. J Clin Diagn Res 2013;7:427–9.
• Tewari S, Gupta C, Palimar V, Kathur SG. Morphometric analysis of foramen spinosum in South Indian population. Acta Medica Iranica 2018;56:113–8.
• Krishnamurthy J, Chandra L, Rajanna S. Morphometric study of foramen spinosum in human skulls. International Journal of Current Research and Review 2013;5:44–8.
• Saheb SH, Khaleel N, Havaldar PP, Shruthi BN. Morphological and morphometric study of foramen spinosum. International Journal of Anatomy and Research 2017;5:4523–6.
• Sophia MM, Kalpana R. A study on foramen spinosum. International Journal of Health Sciences and Research 2015;5:187–93.
• White HJ, Reddy V, Mesfin FB. Anatomy, head and neck, foramen spinosum. In: StatPearls [Internet]. Treasure Island (FL): StatPearls Publishing; 2021 [Internet]. Available from: https://www.ncbi.nlm. nih.gov/books/NBK535432/
• Krayenbühl N, Isolan GR, Al-Mefty O. The foramen spinosum: a landmark in middle fossa surgery. Neurosurg Rev 2008;31:397–402.
• Osunwoke EA, Mbadugha CC, Orish CN, Oghenemavwe EL, Ukash CJ. A morphometric study of foramen ovale and foramen spinosum of the human sphenoid bone of southern Nigerian population. Journal of Applied Biosciences 2010;26:1631–5.
• Zhu HY, Zhao JM, Yang M, Xia CL, Li YQ, Sun H, Zhang YQ, Tian Y. Relative location of foramen ovale, foramen lacerum, and foramen spinosum in hartel pathway. J Craniofac Surg 2014;25: 1038–40.
• Lagravere MO, Gordon JM, Flores-Mir C, Carey J, Heo G, Majorf PW. Cranial base foramen location accuracy and reliability in cone-beam computerized tomography. Am J Orthod Dentofacial Orthop 2011;139:e203–10.
• Baur DA, Beushausen M, Leech B, Quereshy F, Fitzgerald N. Anatomic study of the distance between the articular eminence and foramen spinosum and foramen spinosum and petrotympanic fissure. J Oral Maxillofac Surg 2014;72:1125–9.
• Lazarus L, Naidoo N, Satyapal KS. An osteometric evaluation of the foramen spinosum and venosum. International Journal of Morphology 2015;33:452–8.
• Sharma NA, Garud RS. Morphometric evaluation and a report on the aberrations of the foramina in the intermediate region of the human cranial base: a study of an Indian population. European Journal of Anatomy 2011;15:140–9.
• Javed M, Rehman Z, Iftikhar S, Naz F, Junaid SM, Alam A. Anatomical variations of foramen ovale and foramen spinosum in dry human skull. Journal of Khyber College of Dentistry 2020;2:Article No20. p.1–3 [Available from: http://www.jkcd.kcd.edu.pk/issues/ PublishedOnline2020Vol01/JKCD-OnlinePub2020-V2-No24.pdf]
• Farooq B, Gupta S, Raina S. Anatomic variations in foramen ovale and foramen spinosum. JK Science 2018;20:112–5.
• Kulkarni SP, Nikade VV. A morphometric study of foramen ovale and foramen spinosum in dried indian human skulls. International Journal of Recent Trends in Science and Technology 2013;7:74–5.
• Rai AL, Gupta N, Rohatgi R. Anatomical variations of foramen spinosum. Innovative Journal of Medical and Health Science 2012;2:86–8.
• Khan AA, Asari MA, Hassan A. Anatomical variants of foramen ovale and spinosum in human skulls. International Journal of Morphology 2012;30:445–9.
• Boduç E, Öztürk L. Morphometric evaluation of foramen spinosum [Article in Turkish]. Kafkas Journal of Medical Sciences 2020;10:60– 4.
• Somesh MS, Murlimanju BV, Krishnamurthy A, Sridevi HB. An anatomical study of foramen spinosum in South Indian dry skulls with its emphasis on morphology and morphometry. International Journal of Anatomy and Research 2015;3:1034–8.