Quantification of 3D curvature in the iliac crest: Ontogeny and implications for sex determination in juveniles

Wilson, L. T.; Ives, Rachel; Humphrey, Louise

doi:10.1002/ajpa.23114

Cited by 23 publications

(13 citation statements)

References 33 publications

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“…The trajectory angles of needle direction for the new technique are consistent with those described by Hirahara et al [18]. The presence of sex-related differences in needle trajectory angle in both the traditional and new techniques was expected as studies have often reported sex-related differences in pelvic and iliac crest anatomy [25][26][27]. Despite the presence of statistically significant sex-related differences, it is likely that these differences are not clinically significant as the trajectory angles differed by a small amount (within 1°-2.5° in all measurements).…”

Section: Discussionsupporting

confidence: 78%

A three-dimensional computed tomography study to determine the ideal method for fluoroscopically-guided bone marrow aspiration from the iliac crest

D’Souza

Leng

et al. 2020

Bosn J of Basic Med Sci

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Bone marrow aspiration (BMA) through the iliac crest is potentially unsafe due to the vicinity of neurovascular structures in the greater sciatic notch. Our objective was to investigate the safety of a recently described BMA technique, specifically a trajectory from the posterior superior iliac spine (PSIS) to the anterior inferior iliac spine (AIIS). We conducted a chart review of 260 patients, analyzing three-dimensional reconstructed computed tomography images of the pelvis and sacrum to validate that this new approach offers a wide safety margin from the greater sciatic notch. Analysis of three-dimensional computed tomography scans demonstrated that the PSIS to AIIS trajectory never crossed the greater sciatic notch. The trajectory was noted to be at least one cm away from the greater sciatic notch in all measurements. The new trajectory entered the PSIS at 25.29 ± 4.34° (left side) and 24.93 ± 4.15° (right side) cephalad from the transverse plane, and 24.58 ± 4.99° (left side) and 24.56 ± 4.67° (right side) lateral from the mid-sagittal plane. The area of bone marrow encountered with the new approach was approximately 22.5 cm2. Utilizing the same CT scans, the trajectory from the traditional approach crossed the greater sciatic notch in all scans, highlighting the potential for violating the greater sciatic notch boundary and damaging important neurovascular structures. Statistically significant sex-related differences were identified in needle trajectory angles for both approaches. We conclude that based on this three-dimensional computed tomography study, a trajectory from the PSIS to the AIIS for BMA may offer a wide safety margin from the greater sciatic notch.

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Section: Discussionsupporting

confidence: 78%

A three-dimensional computed tomography study to determine the ideal method for fluoroscopically-guided bone marrow aspiration from the iliac crest

D’Souza

Leng

et al. 2020

Bosn J of Basic Med Sci

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“…These include approaches based on visual evaluation of features of the pelvis (e.g., Bruzek, ; Phenice, ; Schutkowski, ), and skull (e.g., Loth & Henneberg, ; Walker, ); and metric methods for bones (e.g., Holman & Bennett, ; Safont, Malgosa, & Subirà, ; Steele, ) and teeth (e.g., Black, ; Kondo, Townsend, & Yamada, ). Several approaches have leveraged technological and analytical advances, such as geometric morphometric analysis of three‐dimensional laser scan data (Garvin & Ruff, ; Wilson, Ives, & Humphrey, ) and the DNA‐based analyses mentioned above.…”

Section: Potential Solutionsmentioning

confidence: 99%

Demographic anthropology

DeWitte

2018

American J Phys Anthropol

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K E Y W O R D S : enthnographic census, life tables, paleodemography, population models 1 | I N TR ODU C TI ON Demography is the study of population dynamics. The primary foci of demography are rates and levels of mortality, fertility, and migration and how these all interact to produce population growth (or decline), density, and age-and sex-structures; how these rates or levels vary across time and space and what produces such variation; and what consequences these have on other aspects of human (or nonhuman) existence. These demographic phenomena lie at the very heart of evolution. Natural selection occurs as a result of differential fertility and mortality within a population; gene flow occurs because of migration between populations; and the effects of genetic drift are dependent upon population size, which is an outcome of the interactions among mortality, fertility, and migration (Gage, DeWitte, & Wood, 2012).These demographic forces also affect, are affected by, and reflect many of the things that anthropologists find most interesting. For example, the age-sex structure of a population influences the population's ratio of consumers to producers and numbers of potential marriage partners, and thus places limits on such things as subsistence strategies and household structure. The age-sex structure of a population can also significantly influence economic relationships among families and communities, as cultures often have inheritance and habitation rules that depend on the sex and sometimes age of individuals, and thus are inherently influenced strongly by demographic structure. Population growth and density affect socio-political structures and shape disease ecologies, which can, in turn, affect demographic rates and drive biological and cultural adaptations. Sociocultural phenomena also have the potential to powerfully shape demography. For example, warfare can have short-and long-term effects on sex ratios or age structures (as in the case of the post-World War II baby boom). Sexselective infanticide and abortion, and withholding of resources or medical care from daughters because of cultural preferences for sons affects sex ratios. Economic policies and warfare influence patterns of migration. Ultimately, demography is relevant to all fields of anthropology, whether or not all anthropologists are interested in demography itself and its effects on other aspects of human life. Although, as can be seen in the pages of the American Journal of Physical Anthropology, numerous anthropologists over the last 100 years of the journal's existence have been explicitly interested in demography, and in demographic anthropology in particular. In contrast to national demography, which primarily focuses on large datasets (often derived from censuses) from European and other industrialized populations, demographic anthropology typically focuses on relatively small, nonindustrial populations from which data are collected as a part of ethnographic fieldwork. Demographic anthropology also examines the demography of populat...

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“…Wilson et al [6] had also evaluated the use of the auricular surface, but ultimately concluded in the 2011 article [7] that the auricular surface criterion should not be used, given poor success rates particularly among females. A third variable explored by Wilson [6–8,10] was iliac crest curvature and sinuosity. In the most recent article investigating crest curvature and sinuosity in 3D, correct classifications were recorded between 62.3% and 86.7% depending on the variable (with sinuosity demonstrating the highest classification); however, sinuosity accuracy dropped to 56.6–60.4% once cross‐validated [10].…”

Section: Introductionmentioning

confidence: 99%

“…A third variable explored by Wilson [6–8,10] was iliac crest curvature and sinuosity. In the most recent article investigating crest curvature and sinuosity in 3D, correct classifications were recorded between 62.3% and 86.7% depending on the variable (with sinuosity demonstrating the highest classification); however, sinuosity accuracy dropped to 56.6–60.4% once cross‐validated [10].…”

Section: Introductionmentioning

confidence: 99%

Sex estimation of the subadult ilium prior to acetabular fusion

Garvin

Stock

Marciniec

et al. 2021

Journal of Forensic Sciences

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Previous studies evaluating sexual dimorphism in subadult pelvic features present variable, and at times conflicting, conclusions. As a result, there is yet to be a consensus on whether the subadult pelvis can be used in sex estimation methods. This study aims to assess the forensic utility of ilium shape and greater sciatic notch morphology in sexing subadult pelves prior to acetabular fusion. A sample of 397 modern U.S. individuals with unfused acetabula (i.e., tri-radiate cartilages) aged birth to 14 years was queried from a larger sample of postmortem computed tomography scans. Elliptical Fourier analyses were performed on ilium and greater sciatic notch outlines and resultant PCs were evaluated for significant effects of sex and age. Greater sciatic notch metrics were also collected. Stepwise linear discriminant function analyses with leaveone-out cross-validation were performed on the PCs and metric variables. Analyses were performed on pooled samples, on age-specific cohort samples, and on samples that iteratively removed the youngest one-year cohort. Cross-validated correct classification rates ranged from 57% to 65% and no patterns were observed to support an appearance and/or consistent expression of sexually diagnostic traits. Based on the results, sex estimation using these features is not recommended in pelvic remains prior to acetabular fusion, although the sample sizes of individuals over 5 years of age were limited in this study. Future studies should focus on the sexually diagnostic ability of pelvic traits in subadult samples post-fusion of the acetabulum.

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Quantification of 3D curvature in the iliac crest: Ontogeny and implications for sex determination in juveniles

Cited by 23 publications

References 33 publications

A three-dimensional computed tomography study to determine the ideal method for fluoroscopically-guided bone marrow aspiration from the iliac crest

A three-dimensional computed tomography study to determine the ideal method for fluoroscopically-guided bone marrow aspiration from the iliac crest

Demographic anthropology

Sex estimation of the subadult ilium prior to acetabular fusion

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