Sexual dimorphism of foramen magnum: a NCCT based study

Authors

  • Haseeb Abdul Wani Sher-I-Kashmir Institute of Medical Sciences, Srinagar, Jammu and Kashmir
  • Imza Feroz Sher-I-Kashmir Institute of Medical Sciences, Srinagar, Jammu and Kashmir
  • Saleem Mohammad Dar Sher-I-Kashmir Institute of Medical Sciences, Srinagar, Jammu and Kashmir
  • Arshed Hussain Parry Sher-I-Kashmir Institute of Medical Sciences, Srinagar, Jammu and Kashmir
  • Tariq Ahmad Gojwari Sher-I-Kashmir Institute of Medical Sciences, Srinagar, Jammu and Kashmir

DOI:

https://doi.org/10.18203/2349-3259.ijct20191989

Keywords:

Sexual dimorphism, Cross-sectional area, Foramen magnum, Electronic calliper tool, Multi-planar reformation, Correlation coefficient

Abstract

Background: Radiological determination of gender relies predominantly on the skeletal radiology and assumes importance in mass natural disasters, bomb explosions, exhumations and warfare where skeletal fragmentation is common. Varied literature is present regarding the role of foramen magnum in establishing gender identification. The objective of the study was to establish normative values of cross-sectional area of foramen magnum in both genders using NCCT and try to ascertain any significant difference in cross-sectional area in the two genders which may help in gender identification.

Methods: NCCT head images of 378 subjects were analysed in individuals beyond the age of skeletal immaturity. Free ROI technique using electronic calliper tool was used. The cross-sectional area of foramen magnum was automatically obtained after tracing its whole inner circumference.

Results: Mean cross-sectional area of foramen magnum in females was 806.79±106.58 mm2 and was 878.33±98.42 mm2 in males. Although the cross-sectional area in males was greater than females no statistically significant difference was found. The correlation coefficient was found to be weaker (R=0.0413).

Conclusions: No statistically significant difference was found between the two genders. The correlation coefficient was also weak to draw any inference about the gender of the skull on CT imaging. Further studies are needed to include other parameters like the sagittal and transverse diameters of foramen magnum in a larger sample to show importance of foramen magnum, if any, in helping gender identification of skeletal remains.

 

Author Biographies

Haseeb Abdul Wani, Sher-I-Kashmir Institute of Medical Sciences, Srinagar, Jammu and Kashmir

SENIOR RESIDENT

Saleem Mohammad Dar, Sher-I-Kashmir Institute of Medical Sciences, Srinagar, Jammu and Kashmir

senior resident

Arshed Hussain Parry, Sher-I-Kashmir Institute of Medical Sciences, Srinagar, Jammu and Kashmir

senior resident

Tariq Ahmad Gojwari, Sher-I-Kashmir Institute of Medical Sciences, Srinagar, Jammu and Kashmir

professor and head

References

Krogman WM, Isçan MY. The human skeleton in forensic medicine, Charles C. Thomas, Springfield, IL. 1986:413-57. Longia GS. Anthropometrical features laryngeal cartilages. Adli Tip Dergisi. 1990;6:141–8.

Teixeria WRG. Sex identification utilizing the size of the foramen magnum. Am J Forensic Med Pathol. 1982;3:203–6.

Holland TD. Use of the cranial base in the identification of fire victims. J Forensic Sci. 1984;29:1087-93.

Di Vella G, Campobasso CP, Dragone M, Introna F Jr. Skeletal sex determination by scapular measurements. Boll Soc Ital Biol Sper. 1994;70:299–305.

Shanthi CH, Lokanadham S. Morphometric Study on Foramen Magnum of Human Skulls. Med Sci. 2013;2(4):792-8.

Hayashizaki Y, Usui A, Hosokai Y, Sakai J, Funayama M. Sex determination of the pelvis using Fourier analysis of postmortem CT images. Forensic Sci Int. 2015;246:122.

Gruber P, Henneberg M, Boni T, Ruhli FJ. Variability of human foramen magnum size. Anat Rec (Hoboken). 2009;292(11):1713-9.

Quatrehomme G, Fronty P, Sapanet M, Grevin G, Bailet P, Olier A. Identification by frontal sinus pattern in forensic anthropology. Forensic Sci Int. 1996;83:147–53.

Gu¨nay Y, Altinko¨k MC¸ Agdir S, Kirangil B. Gender determination with skull measurements (in Turkish). J Forensic Med. 1997;13:13–9.

Gu¨nay Y, Altinko¨kM, C¸ agdir S, Sari H. Is foremen magnum size useful for gender determination (in Turkish). Bull Legal Med. 1998;3:41–5.

Cameriere R, Ferrante L, Mirtella D, Rollo UF, Cingolani M. Frontal sinuses for identification: quality of classifications, possible error and potential corrections. J Forensic Sci. 2005;50:770–3.

Rogers LT. Determining the sex of human remains through cranial morphology. J Forensic Sci. 2005;50:493–500.

Gruber P, Henneberg M, Bo¨ni T, Ru¨hli F. Varaibility of human foramen magnum size. Anat Rec. 2009;292:1713–9.

Catalina-Herrera CJ. Study of the anatomic metric values of the foramen magnum and its relation to sex. Acta Anat. 1987;130:344–7.

Zaidi SH, Dayal SS. Variations in the shape of foramen magnum in Indian skulls. Anat Anz Jena. 1988;167:338–40.

Manoel C, Prado FB, Caria PHF, Groppo FC. Morphometric analysis of the foramen magnum in human skulls of Brazilian individuals: its relation to gender. Braz J Morphol Sci. 2009;26:104–8.

Krogman WM, Iscan MY. The human skeleton in forensic medicine. 2nd edn. Springfield, Illinois: Charles C Thomas Publishing; 1986.

Di Vella G, Campobasso CP, Dragone M, Introna F Jr. Skeletal sex determination by scapular measurements. Boll Soc Ital Biol Sper. 1994;70:299-305.

Catalina‑Herrera CJ. Study of the anatomic metric values of the foramen magnum and its relation to sex. Acta Anat (Basel). 1987;130:344-7.

Uthman AT, Al‑Rawi NH, Al‑Timimi JF. Evaluation of foramen magnum in gender determination using helical CT scanning. Dentomaxillofac Radiol. 2012;41:197-202.

Uysal S, Gokharman D, Kacar M, Tuncbilek I, Kosa U. Estimation of sex by 3D CT measurements of the foramen magnum. J Forensic Sci. 2005;50:1310-4.

Radhakrishna SK, Shivarama CH, Ramakrishna A, Bhagya B. Morphometric analysis of foramen magnum for sex determination in South Indian population. Nitte Univ J Health Sci. 2012;2:20-2.

Jain SK, Choudhary AK, Mishra P. Morphometric evaluation of foramen magnum for sex determination in a documented North Indian sample. J Evol Med Dent Sci. 2013;2:80938.

Patel R, Mehta CD. Morphometric study of foramen magnum at the base of human skull in South Gujarat. IOSR J Dent Med Sci. 2014;13:235.

Kanchan T, Gupta A, Krishan K. Craniometric analysis of foramen magnum for estimation of sex. Int J Med Health Biomed Pharm Eng. 2013;7:1113.

Shepur MP, Magi M, Nanjundappa B, Havaldar PP, Gogi P, Saheb SH. Morphometric analysis of foramen magnum. Int J Anat Res. 2014;2:24955.

Gapert R, Black S, Last J. Test of age-related variation in the craniometry of the adult human foramen magnum region: implications for sex determination methods. Forensic Sci Med Pathol. 2013;9(4):478-88.

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Published

2019-04-29

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Original Research Articles