A Study for Determination of Sex by Multidetector Computed Tomography of Sternum using Discriminant Function and Logistic Regression

Chowdhuri, Soumeek; Roy, Priyam; Dey, Arkadeep; Das, Saikat; Ghosh, Ritwik

doi:10.26735/16586794.2019.035

Cited by 1 publication

(8 citation statements)

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“…2,7,9,14,15,[21][22][23][24] The sternum having a robust structure can survive a great degree of compression and can be procured from cadavers without damage. 1,2,5,10,13,18 Many researchers have studied sternum in order to prove its usage as an indicator of sex in different populations. 1,5,[23][24][25][26] Wenzel(1788)brought some information about sexual dimorphism in the sternum.…”

Section: Original Research Articlementioning

confidence: 99%

“…1,2,5,10,13,18 Many researchers have studied sternum in order to prove its usage as an indicator of sex in different populations. 1,5,[23][24][25][26] Wenzel(1788)brought some information about sexual dimorphism in the sternum. His work led to Hyrtl's law (1878) which stated if Sternal Index is less than 50% in males and more than 50% in females.…”

Section: Original Research Articlementioning

confidence: 99%

“…They can be used to create high-resolution, anatomically accurate 3D models which are close to original bone shape and hence enable rapid measurement. 5,7,14,15 This is especially important in larger samples, where observer's efficiency and precision decrease while software efficiency increases. 10,13 Thus, with this study we aim to determine the dimensions and index of the sternum to find out their reliability in sexual dimorphism in the Nepalese population by 3D Computed Tomography and apply Hyrtl's law.…”

Section: Original Research Articlementioning

confidence: 99%

“…3,4 Identification can become more difficult during mutilation of body parts and decomposition. 1,5,6 In these cases of dubious identity, fine differences also assume importance and identification has to be done from remnants. 5,7 Since the bones resist putrefaction and destruction by animals, they are cardinal clue for identification.…”

Section: Introductionmentioning

confidence: 99%

“…1,5,6 In these cases of dubious identity, fine differences also assume importance and identification has to be done from remnants. 5,7 Since the bones resist putrefaction and destruction by animals, they are cardinal clue for identification. [8][9][10] After ancestry, determination of sex can be undertaken as a prime gravity in identification.…”

Section: Introductionmentioning

confidence: 99%

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Sex- related morphometric difference in sternal index and dimensions amongst Nepalese adults

Karki

Singh

Karki

et al. 2020

J. Gandaki Med. Coll. Nepal

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Introduction: The comprehensive goal in forensic anthropology is the identification of skeletal remains for which researchers are constantly working to produce methods that are as accurate as possible. Because of distinct sexual dimorphism, bones of the pelvis and skull are preferred; however, when these bones are unavailable other bones like sternum have to be used as it holds a great deal of sexual dimorphism. Objective: To evaluate sexual dimorphism in the metric parameters of the sternum through MDCT images amongst Nepalese adults. Materials and Methods: Sternal dimensions of 105 study participants (62 male and 43 female) were measured using Computed Tomography (CT) images from Radiology Department of Dhulikhel Hospital. An independent t test was performed to assess the strength of association between different variables and genders. Differences were considered significant at P < 0.05. ROC curve analysis was done to determine the discriminating power of variables for sex determination. Result: The different measurements of sternal lengths were significantly greater in male than females(p<0.001) except Sternal Index which was found to be higher in female (p<0.001). Despite this difference in mean, most of the sterna were in overlapping zone. The limiting point of 126 was determined for total sternum which could correctly classify majority of sternum. Using ROC curve the mesosternum and total sternum were found to be most accurate (>95%) in sex determination. Hyrtl’s law could classify 91.9% of the male and Ashley’s rule of 136 could 97.67% of the female. Conclusion: Hence this study made an effort in sexing the sternum in Nepalese population amongst which mesosternal length and total sterna length were found to be best estimators of sex whereas manubrium length and sternal index were not found to be satisfactory.

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