Maryna Steyn

University of the Witwatersrand

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Willem C. Nienaber

University of Pretoria

Ericka N. L’Abbé

University of Pretoria

D. Botha

University of the Witwatersrand

Anja Meyer

Johannesburg Hospital

Alie E. van der Merwe

University of Amsterdam

Desiré Brits

University of the Witwatersrand

Nanette Briers

Stellenbosch University

Mehmet Yaşar İşcan

Yıldız Technical University

Nicholas Bacci

University of the Witwatersrand

Jolandie Myburgh

University of Pretoria

Cooperative Institutions

University of Pretoria

University of the Witwatersrand

Uppsala University

University of Milan

Institut de Biologia Evolutiva

University of Johannesburg

American Academy of Forensic Sciences

North Carolina State University

Universidad de Granada

Centre National de la Recherche Scientifique

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The Status of Forensic Anthropology in Europe and South Africa: Results of the 2016 FASE Questionnaire on Forensic Anthropology

HAL (Le Centre pour la Communication Scientifique Directe) (2019)

Zuzana Obertová Pascal Adalian Éric Baccino Eugénia Cunha Hans de Boer

Forensic anthropology

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Repatriation of remains of the Ebo four from Angola

Suid-Afrikaanse Tydskrif vir Natuurwetenskap en Tegnologie (2014)

Maryna Steyn Willem C. Nienaber W.S. Boshof

Repatriation of remains of the Ebo four from Angola Between 23 November 1975 and 25 November 1975 four South African soldiers died during the first phase of military involvement in Angola. The aim of this paper is to report on the repatriation of the remains of these individuals. Despite information from a number of individuals and several test pits, the grave of the fourth individual could not be found. The remains of the Ebo individuals were returned to South Africa and placed in the Wall of Remembrance at the Voortrekker Monument in Pretoria, thus bringing closure to families and friends.

Repatriation

10.4102/satnt.v33i1.1277

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Statistics and probability in forensic anthropology, Edited by ZuzanaObertová, AlistairStewart, & CristinaCattaneo, Elsevier Academic Press, 2020

American Journal of Physical Anthropology (2021)

Maryna Steyn Nicholas Bacci

10.1002/ajpa.24336

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Soft tissue thickness values for black and coloured South African children aged 6–13 years

Forensic Science International (2015)

Nanette Briers T. Briers Piet Becker Maryna Steyn

Black african

Cephalometry

10.1016/j.forsciint.2015.04.015

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Citations (30)

Testing regression and mean model approaches to facial soft-tissue thickness estimation

Medicine Science and the Law (2020)

Tobias M. R. Houlton Nicolene Jooste Maryna Steyn

Average facial soft-tissue thickness (FSTT) databanks are continuously developed and applied within craniofacial identification. This study considered and tested a subject-specific regression model alternative for estimating the FSTT values for oral midline landmarks using skeletal projection measurements. Measurements were taken from cone-beam computed tomography scans of 100 South African individuals (60 male, 40 female; M age = 35 years). Regression equations incorporating sex categories were generated. This significantly improved the goodness-of-fit ( r 2 -value). Validation tests compared the constructed regression models with mean FSTT data collected from this study, existing South African FSTT data, a universal total weighted mean approach with pooled demographic data and collection techniques and a regression model approach that uses bizygomatic width and maximum cranial breadth dimensions. The generated regression equations demonstrated individualised results, presenting a total mean inaccuracy (TMI) of 1.53 mm using dental projection measurements and 1.55 mm using cemento-enamel junction projection measurements. These slightly outperformed most tested mean models (TMI ranged from 1.42 to 4.43 mm), and substantially outperformed the pre-existing regression model approach (TMI = 5.12 mm). The newly devised regressions offer a subject-specific solution to FSTT estimation within a South African population. A continued development in sample size and validation testing may help substantiate its application within craniofacial identification.

Goodness of fit

10.1177/0025802420977018

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Case discussions of missed traumatic fractures on computed tomography scans

South African Journal of Radiology (2022)

Amy Joy Spies Maryna Steyn Desiré Brits Daniel Nicholas Prince

Radiological diagnostic errors are common and may have severe consequences. Understanding these errors and their possible causes is crucial for optimising patient care and improving radiological training. Recent postmortem studies using an animal model highlighted the difficulties associated with accurate fracture diagnosis using radiological imaging. The present study aimed to highlight the fact that certain fractures are easily missed on CT scans in a clinical setting and that caution is advised. A few such cases were discussed to raise the level of suspicion to prevent similar diagnostic errors in future cases. Records of adult patients from the radiological department at an academic hospital in South Africa were retrospectively reviewed. Case studies were selected by identifying records of patients between January and June 2021 where traumatic fractures were missed during initial imaging interpretation but later detected during secondary analysis or on follow-up scans. Seven cases were identified, and the possible causes of the diagnostic errors were evaluated by reviewing the history of each case, level of experience of each reporting radiologist, scan quality and time of day that initial imaging interpretation of each scan was performed. The causes were multifactorial, potentially including a lack of experience, fatigue, heavy workloads or inadequate training of the initial reporting radiologist. Identifying these causes, openly discussing them and providing additional training for radiologists may aid in reducing these errors.This article aimed to use case examples of missed injuries on CT scanning of patients in a South African emergency trauma setting in order to highlight and provide insight into common errors in scan interpretation, their causes and possible means of mitigating them.

Radiological Imaging

10.4102/sajr.v26i1.2516

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The usefulness of canine measurements and indices in determination of population affinity in South Africans

SADJ (2010)

A. S. E. Ackermann Maryna Steyn

Introduction: Forensic anthropologists are continually look ing into new methods to determine sex, age and ancestry from unknown skeletal remains, also attempting to improve existing methods. Teeth are very durable, and are therefore very valuable in forensic death investigations. Aim: The aim of this paper was to use measurements of the upper and lower canines as well as the inter-canine distances in order to determine population affinity from unknown remains. Materials and methods: Two hundred skeletons of South Africans were used, which included 50 individuals of each sex and population group (black and white males and females). Due to dental wear and some antemortem tooth loss a full set of measurements could not be obtained from particularly the white females. Discriminant function formulae were developed for dentition of the upper and lower jaws separately, using mesiodistal and buccolingual diameters of the canines, crown indices as well as intercanine distances. Results: Average accuracies of between 49.5% and 76.9% were obtained. Measurements of the maxillary teeth in females (76.9%) and the mandibular teeth in males (76.0%) may be useful to determine ancestry in unknown remains. Similar accuracies were obtained when these formulae were tested using a set of measurements from different samples.

Discriminant function analysis

Permanent dentition

White (mutation)

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Citations (1)

Diffuse idiopathic skeletal hyperostosis: Diagnostic, clinical, and paleopathological considerations

Clinical Anatomy (2016)

Rachel L.V. Holgate Maryna Steyn

Diffuse idiopathic skeletal hyperostosis (DISH) is a disease primarily affecting the spine. However, it is also associated with the ossification/calcification of tendon, ligament, and capsule insertions (entheses) occurring at multiple peripheral sites. The etiology of the condition is unknown, as the name suggests (diffuse idiopathic skeletal hyperostosis), although some correlations with diabetes mellitus, obesity, and age have been noted. Clinical diagnostic criteria have been adapted for paleopathological assessment of archeological skeletal remains, revealing some interesting patterns between monastic and lay populations; showing a higher incidence of DISH among individuals buried in monastic cemeteries. Although fascinating, the mechanisms behind this difference in prevalence are still not fully understood and have been attributed to the relatively richer diets of the monks and priests. The development of diagnostic criteria, where early stage cases of DISH can be identified as well as a better understanding of its causes, is paramount to the prevention of this potentially debilitating condition and perhaps this is where paleopathologists can assist. The use of dry bone rather than living patients for detailed assessment means that paleopathologists are less restricted by the techniques they can use in their investigations and the condition's occurrence in various archeological assemblages can provide interesting insights into its etiology. Clin. Anat. 29:870-877, 2016. © 2016 Wiley Periodicals, Inc.

Etiology

Hyperostosis

Enthesis

Paleopathology

10.1002/ca.22716

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Citations (38)

Facial reconstruction: Soft tissue thickness values for South African black females

Forensic Science International (2011)

D. Cavanagh Maryna Steyn

Facial reconstruction

Forensic anthropology