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IJAR.2017.198

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Type of Article:  Original Research

Volume 5; Issue 2.2 (May 2017)

Page No.: 3837-3842

DOI: https://dx.doi.org/10.16965/ijar.2017.198

MORPHOMETRIC STUDY OF PTERION AND ASTERION IN ADULT HUMAN SKULLS OF INDIAN ORIGIN

Vivaan Dutt *1, Veena Vidya Shankar 2, Shailaja Shetty 3.

*1 MBBS, Ramaiah Medical College,  Bangalore, Karnataka, India.

2 MBBS, MD, Associate Professor, Department of Anatomy,  Ramaiah Medical College, Bangalore, Karnataka, India.

3 MBBS, MD, Professor and Head, Department of Anatomy, Ramaiah Medical College, Bangalore, Karnataka, India.

Address for Correspondence: Dr. Vivaan Dutt,  Ramaiah Medical College, Bangalore – 560054, Karnataka, India. Contact No.:  0990106004  E-Mail: vivaan00@gmail.com

ABSTRACT

Introduction: The pterion and asterion are regions of sutural confluence in the skull. They represent important extra-cranial landmarks allowing surgical and microsurgical approach for surgeons.

Aims: To study the morphology and morphometry of the pterion and asterion in the adult human skulls of Indian origin.

Materials and methods: 78 dry human skulls were studied. Sutural pattern of pterion were classified into sphenoparietal, frontotemporal, epipteric or stellate type. Position of pterion was determined in relation to four specific bony landmarks. Length and thickness were also measured using slide calipers. Sutural morphology of asterion was classified.

Results: All four types of pterion were observed in the skulls analyzed. Sphenoparietal was the predominant type observed. Stellate type was least common. Bilateral asymmetry was seen. Mean distances from centre of pterion were 38.15+/-3.67 (right side) and 36.69+/-3.64 (left side) superior to zygomatic arch; 29.35+/-3.60 (right side) and 27.37+/-5.80 (left side) posterior to fronto-zygomatic suture, 8.80 +/-2.25 (right side) and 8.66 +/- 2.21 (left side)  from lateral edge of sphenoidal ridge and 39.58+/-3.49(right side) and  38.84+/-3.48 (left side) from lateral margin of optic canal. Mean length of pterion was 14.06+/-2.96 on right side and 14.58+/- 4.06 on left side. Mean thickness of skull at pterion was 5.72 +/-1.41 on right side and 5.77+/-1.29 on left side. Type 1 and type 2 of asterion were observed in the skulls.

Conclusion: The present study is in agreement with previous studies on different populations and concludes that the morphologic and morphometric patterns of pterion and asterion in skulls of Indian origin are similar to those in other populations.

KEY WORDS: Pterion, asterion, morphometry, skull, frontozygomatic suture, sutural bones, sphenoparietal.

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Cite this article: Vivaan Dutt, Veena Vidya Shankar, Shailaja Shetty. MORPHOMETRIC STUDY OF PTERION AND ASTERION IN ADULT HUMAN SKULLS OF INDIAN ORIGIN. Int J Anat Res 2017;5(2.2):3837-3842. DOI: 10.16965/ijar.2017.198