Vishnu Prasad Junior Resident, Department of Forensic Medicine, Vinayaka Mission’s Medical College, Vinayaka Mission’s Research Foundation (Deemed to be university), Karaikal 609609, Pondicherry, India
Thumma Amar Assistant Professor, Department of Forensic Medicine, Vinayaka Mission’s Medical College, Vinayaka Mission’s Research Foundation (Deemed to be university), Karaikal 609609, Pondicherry, India
Mr. Vedarethinam Junior Resident, Department of Forensic Medicine, Vinayaka Mission’s Medical College, Vinayaka Mission’s Research Foundation (Deemed to be university), Karaikal 609609, Pondicherry, India
Vijayakumar Nair G Professor, Department of Forensic Medicine, Vinayaka Mission’s Medical College, Vinayaka Mission’s Research Foundation (Deemed to be university), Karaikal 609609, Pondicherry, India
Shilpa T Patil Associate Professor, Department of Pathology, Vinayaka Mission’s Medical College, Vinayaka Mission’s Research Foundation (Deemed to be university), Karaikal 609609, Pondicherry, India
Address for correspondence: Thumma Amar, Assistant Professor, Department of Forensic Medicine, Vinayaka Mission’s Medical College, Vinayaka Mission’s Research Foundation (Deemed to be university), Karaikal 609609, Pondicherry, India E-mail: amar.thumma@gmail.com
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Prasad V, Amar T, Vedarethinam, et al. Determination of Sex Using Mastoid Process. Indian J Forensic Med Pathol. 2024;17(3):185-189.
Timeline
Received : July 11, 2024
Accepted : October 16, 2024
Published : September 10, 2024
Abstract
Background: Anthropometric studies of bones play a crucial role in establishing identification, especially in fragmented skeletal remains. Mastoid process is acone shaped bony protuberance extending from mastoid region of temporal bone of the skull. It is usually undamaged, because of its unique and secured position. The present study is aimed at evaluating the usefulness of the mastoid length in gender identification.
Material and Methods: 54 dried, and unharmed skulls of identified sex were employed in the study. Out of which 28 were male, 26 were female. The mastoid process length was measured on either side by using a Vernier calliper from Frankfurt’s plane.
Results: In male skulls, the mean mastoid length was 29.5 ± 3.65 mm, while in female skulls, it was 24.6 ± 3.55 mm. A statistical analysis indicated that the mastoid length for determining sex has a highly significant p value of less than 0.0001.
Conclusion: The mean mastoid length is significantly less in females than in males. Therefore, it can be considered as a sexual dimorphic feature and is useful in determining sex from fragmented skull.
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This research received no funding.
Author Contributions
All authors contributed significantly to the work and approve its publication.
Ethics Declaration
This article does not involve any human or animal subjects, and therefore does not require ethics approval.
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Conflicts of Interest
The authors report no conflicts of interest in this work.
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Cite this article
Prasad V, Amar T, Vedarethinam, et al. Determination of Sex Using Mastoid Process. Indian J Forensic Med Pathol. 2024;17(3):185-189.
This license enables reusers to distribute, remix, adapt, and build upon the material in any medium or format for noncommercial purposes only, and only so long as attribution is given to the creator.
This license enables reusers to distribute, remix, adapt, and build upon the material in any medium or format for noncommercial purposes only, and only so long as attribution is given to the creator.
Description: Fig. 2: Measurement of Mastoid process Length
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Description: Fig. 1: The Frankfurt’s plane is a horizontal plane that extends across the bony orbit’s lower margin and the external acoustic meatus’s upper margin
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Description: The mean mastoid length for male skulls was found to be 29.5 mm with a standard deviation of 3.65, whereas the mean mastoid length in female skulls was 24.6 mm, with a standard deviation of 3.55. The P-value was less than 0.0001, indicating a significant difference between the mastoid lengths of the skulls of men and women. (Table 1)