Feasibility of Contactless 3D Optical Measurement for the Analysis of Bone and Soft Tissue Lesions: New Technologies and Perspectives in Forensic Sciences

Abstract:  In forensic pathology and anthropology, a correct analysis of lesions on soft tissues and bones is of the utmost importance, in order to verify the cause and manner of death. Photographs, videos, and photogrammetry may be an optimal manner of immortalizing a lesion, both on cadavers and skeletal remains; however, none of these can supply a detailed three-dimensional (3D) modeling of the lesion. Up to now, only the use of casts has given us the possibility of studying deep lesions such as saw marks with an accurate and complete 3D reconstruction of bone structure. The present study aims at verifying the applicability of 3D optical contactless measurement for the accurate recording of soft tissue and bone lesions, in order to develop a unique and precise method of registering and analyzing lesions, both in forensic pathology and anthropology. Three cases were analyzed: the first, a car accident with blunt force skin injuries; the second, a murder with blunt force injury to the head applied with a metal rod; the third, a series of sharp force knife and saw lesions on bone. Results confirm that 3D optical digitizing technology is a crucial tool in the immortalization of wound morphology in the medico-legal context even on "difficult" substrates such as cut marks and saw marks on bone.     

Characterization of lesions in hanging deaths

Hanging is a common method of committing suicide and a routine task in medico-legal autopsies. The hanging mark is the most relevant external sign and its characteristics are well known, but, for unknown reasons, there are major differences in reports on internal findings. We retrospectively studied 228 consecutive cases of hanging deaths. A complete standard autopsy was performed for every case. We investigated the association between the characteristics of the hanging mark and the frequency of bone, cartilage, soft tissue, and vascular injuries with the mode of suspension. Most cases (75.3%) presented some kind of bone or cartilage fracture, but these were unrelated to any of the variables studied. Vascular lesions are clearly more infrequent: intimal injuries were found in the carotid artery (9.1%), the jugular vein (2.2%), and ruptures of the carotid adventitial layer (21.7%). These could be partially associated with the use of a hard fixed noose and body weight.     

Comparing Cosponsorship and Roll‐Call Ideal Points

We use bill cosponsorship and roll‐call vote data to compare legislators' revealed preferences in the U.S. House of Representatives and the Argentine Chamber of Deputies. We estimate ideal points from bill cosponsorship data using principal‐component analysis on an agreement matrix that included information on all bills introduced in the U.S. House (1973–2000) and Argentine Chamber (1983–2002). The ideal‐point estimates of legislators' revealed preferences based on cosponsorship data strongly correlate with similar estimates derived from roll‐call vote data. Also, cosponsorship activity in the U.S. House has lower dimensionality than cosponsorship has in the Argentine Chamber. We explain this lower discrimination as a function of individual‐ and district‐level factors in both countries.     

Criminological and Medico-legal Aspects in Homicidal and Suicidal Sharp Force Fatalities

The interpretation of sharp force fatality dynamics may be difficult in some cases, but a contribution to analysis of the phenomenon may be provided by case studies. Therefore, the purpose of our study is focused on identifying, in observed sharp force fatalities, reliable parameters that can differentiate a homicidal and suicidal manner of death, with particular reference to criminological parameters. Data derived from sharp force fatality cases in Padua and Venice from 1997 to 2019, anonymized and collected in Excel, included personal, circumstantial, clinical, and psychopathological–criminological data, as well as crime scene investigation, necroscopic, and toxicological data. Statistical analyses were performed using chi-square and Wilcoxon rank-sum tests. Possible predictors of homicide were analyzed by logistic regression. Six parameters (bloodstains distant from the body, clothing lacerations, hesitation/defense wounds, number of injuries, and potential motives) were significantly different in the two groups (p < 0.05). An independent statistical association between potential motives explaining the crime (p < 0.001; OR 27.533) and homicide on multiple logistic regression analysis was highlighted. The absence of clothing lacerations was inversely related to homicide (p = 0.002, OR 0.092). To the best of our knowledge, this is one of very few Italian studies concerning the differential diagnosis between homicidal and suicidal sharp force fatalities. The dynamics of the event is established in most cases by the integrated evaluation of data from crime scene investigation and the autopsy. Nevertheless, in an atypical scenario, a psychopathological–criminological analysis may provide essential elements, and particular attention should be given to the identification of potential explanatory motives.     

Multi-Rater Agreement Using the Adapted Fracture Healing Scale (AFHS) for the Assessment of Tubular Bones on Conventional Radiographs: Preliminary Study*

Better understanding of the timing of fracture healing may help in cases of interpersonal violence but also of personal identification. The intra- and inter-rater agreement for the adapted fracture healing scale (AFHS) assessing the post-traumatic time interval on radiographs were tested. This is a preliminary study, providing essential information on method reliability for upcoming studies using the AFHS. Five raters (two radiologists, a forensic pathologist, an orthopedist, and an anthropologist) were presented with a test in three parts consisting of 85 radiographs (from 30 adults) of fractures of tubular bones in different stages of healing purposefully selected from more than 1500 radiographs. The raters were firstly asked to assess 15 features describing fracture healing as present, absent, or not assessable. Thereafter, the raters were asked to choose from the AFHS a single-stage best representing the observed healing pattern. The intra- and inter-rater agreement were assessed using single-rating, absolute agreement, two-way mixed-effects intra-class correlation (ICC) coefficients. The intra-rater ICC of radiologist 1 ranged from 0.80 to 0.94. The radiologists’ inter-rater ICC ranged from 0.68 to 0.74, while it ranged from −0.01 to 0.90 for the other raters. The good to excellent ICC among the radiologists and forensic anthropologist provides good foundation for the use of the AFHS in forensic cases of trauma dating. The poor to good results for the other physicians indicate that using the AFHS requires training in skeletal anatomy and radiology.     

Cultural Stress,Emotional well-being,and Health Risk Behaviors among Recent Immigrant Latinx families: The Moderating Role of Perceived Neighborhood Characteristics

Journal of Youth and Adolescence - Latinx families can experience cultural stressors, which can negatively influence their emotional and behavioral health. Few studies have examined if perceived...     

Family Functioning and Adolescent Internalizing and Externalizing Problems: Disentangling between-, and Within-Family Associations

Journal of Youth and Adolescence - Adolescence is often a period of onset for internalizing and externalizing problems. At the same time, adolescent maturation and increasing autonomy from parents...     

Putin,Erdogan and Orbán: Band of Brothers?

In 1990, right after the Berlin Wall fell, NPQ published our Spring edition, titled “The New World Disorder,” about the nationalistic chaos and up‐in‐theair sensibility of that fraught new historical moment. Nearly a quarter of a century later, the regime of globalization that had supplanted the Cold War world of blocs is itself coming apart at the seams. Even Henry Kissinger these days says “the world order is crumbling.” Will this New World Disorder 2.0 revert to a system of conflicting blocs, as during the Cold War, or will we be mature enough to save the interdependence of plural identities that is the foundation of a new global civilization? In this section our contributors offer their perspectives on what the future holds.     

School predictors of alcohol use in high school Hispanic and non-Hispanic youth

Many youth alcohol prevention programs are not culturally sensitive and have focused on avoidance tactics. Given the differences in alcohol use and the possibly differing intervention strategies for Hispanic and non-Hispanic youth, this study aims to analyze the contributing factors of alcohol use within these two groups. Two hundred and one high school students participated in a survey. Findings indicate that prevention programs should focus on situational opportunities to use alcohol for both Hispanic and non-Hispanic youth. For Hispanic students, school management skills did not relate to less alcohol use, as expected. There should be less emphasis on how risky drinking can be, and more emphasis on the moral implications or “wrongness” of drinking, particularly for non-Hispanics. The discussion includes some possible interpretations of the relationship between skill management skills and heightened alcohol use for Hispanic students.     

Patterns of Ethnic Homogenisation,Fragmentation and Polarisation and the Vote Shares for Nationalist Parties in Latvia

Abstract

The focus of this article is on ethnic diversity and polarisation in Latvia after 1989. Our fundamental question is that if we interpret diversification as a dynamic process, and include polarisation as a potential direction of diversification, how much will the results differ, compared to the explanations usually proposed in the literature? The recognition that apparent homogenisation results, in particular cases, in polarisation (in this case in 35% of Latvia’s entire population) is the major contribution of our empirical analysis. Taking into account the broad scale of the potential impact of polarisation, our findings raise significant questions for the classification mechanisms that may be employed in further investigations.