Forensic odontology in war graves exhumation in the Ukraine.
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Adult↗
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Disinterment from paving materials: use of heavy equipment for exhumation and examination of bodies.
Common paving materials--concrete and asphalt--pose an unusual and complex barrier to disinterment and examination of human remains. Although not commonly encountered, these materials are seen with sufficient frequency to justify consideration of the procedures and equipment necessary for disinterment. Over a seven year period we have encountered paving materials seven times. In each of these cases, the material was slightly different in quality, and different tools--including heavy construction equipment--were necessary. Sometimes the paving material could be managed without heavy power tools, but occasionally specialized construction tools have proven very useful.
Autopsy↗
The use of forensic botany and geology in war crimes investigations in NE Bosnia.
From 1997 to 2002 the United Nations International Criminal Tribune for the former Yugoslavia (ICTY) undertook the exhumation of mass graves in NE Bosnia as part of the war crimes investigations aimed at providing evidence for the prosecution of war criminals in The Hague. This involved the location and exhumation of seven former mass graves (primary sites) dug following the fall of Srebrenica in July 1995. These primary mass graves were secretly and hurriedly exhumed three months later and most of the bodies or body parts transported and reburied in a large number of secondary sites many of which were subsequently exhumed by ICTY. The aim of the pollen and soil/sediment studies was to provide an 'environmental profile' of the original site of the samples and use this to match the relocated bodies to the original mass graves. This was part of completing the chain of evidence, providing evidence of the scale and organization of the original atrocities and the subsequent attempts to conceal the evidence related to them. All the primary sites were located in areas of contrasting geology, soils and vegetation, and this allowed matching of the sediment transported in intimate contact with the bodies to the original burial sites, which in some cases were also the execution sites. In all, over 24 sites were investigated, over 240 samples collected and analyzed under low power microscopy and 65 pollen sub-samples fully analyzed. The pollen and sediment descriptions were used in conjunction with the mineralogy (using XRD) of primary and secondary sites in order to provide matches. These matches were then compared with matching evidence from ballistic studies and clothing. The evidence has been used in court and is now in the public domain. It is believed this is the first time 'environmental profiling' techniques have been used in a systematic manner in a war crimes investigation.
Bosnia and Herzegovina↗
Identification from skeletal remains.
The remains of a suspected case of homicide, found to be almost totally skeletal on exhumation, was dug out from a pit in a tract of marshy land in the deep south or Sri Lanka. No clothing or other identifying articles were found with the remains. During exhumation a distinct odour of kerosene oil was observed. Examination revealed that the major part of the skeleton was present, including the skull and lower jaw. Examination of these enabled an opinion to be given on the stature, sex and age of the deceased. The head hair found at exhumation showed evidence of burning. Two groups of injuries were found in the bones. One group was consistent with injuries caused during life and showing the characters of healing and moulding. Although medical records were not available, it was possible to obtain a description of the injuries from the court records as a doctor had given evidence on injuries sustained by the deceased years previously. The other group comprised of injuries that would have caused or contributed to death, or were post-mortem injuries inflicted for purposes of disposal. This case illustrates that personal identification may be established from old healed skeletal injuries.
Adult↗
The changing window of conditions that promotes germination of two fire ephemerals, Actinotus leucocephalus (Apiaceae) and Tersonia cyathiflora (Gyrostemonaceae).
BACKGROUND AND AIMS: Following a period of burial, more Actinotus leucocephalus (Apiaceae) and Tersonia cyathiflora (Gyrostemonaceae) seeds germinate in smoke water. The main aim of this study was to determine whether these fire-ephemeral seeds exhibit annual dormancy cycling during burial. This study also aimed to determine the effect of dormancy alleviation on the range of light and temperature conditions at which seeds germinate, and the possible factors driving changes in seed dormancy during burial. METHODS: Seeds were collected in summer, buried in soil in mesh bags in autumn and exhumed every 6 months for 24 months. Germination of exhumed and laboratory-stored (15 degrees C) seeds was assessed at 20 degrees C in water or smoke water. Germination response to light or dark conditions, incubation temperature (10, 15, 20, 25 and 30 degrees C), nitrate and gibberellic acid were also examined following burial or laboratory storage for 24 months. In the laboratory seeds were also stored at various temperatures (5, 15, 37 and 20/50 degrees C) for 1, 2 and 3 months followed by germination testing in water or smoke water. KEY RESULTS: The two species exhibited dormancy cycling during soil burial, producing low levels of germination in response to smoke water when exhumed in spring and high levels of germination in autumn. In autumn, seeds germinated in both light and dark and at a broader range of temperatures than did laboratory-stored seeds, and some Actinotus leucocephalus seeds also germinated in water alone. Dormancy release of Actinotus leucocephalus was slow during dry storage at 15 degrees C and more rapid at higher temperatures (37 and 20/50 degrees C); weekly wet/dry cycles further accelerated the rate of dormancy release. Cold stratification (5 degrees C) induced secondary dormancy. By contrast, no Tersonia cyathiflora seeds germinated following any of the laboratory storage treatments. CONCLUSIONS: Temperature and moisture influence dormancy cycling in Actinotus leucocephalus seeds. These factors alone did not simulate dormancy cycling of Tersonia cyathiflora seeds under the conditions tested.
Analysis of Variance↗
A grave matter--dental findings of people buried in the 19th and 20th centuries.
The exhumed remains of 181 people, buried during the period 1848-1984 were examined. Because of the carelessness of exhumations, only 125 yielded sufficient information to compare the condition of skulls and jaws with the period in the grave, while 63 yielded information about the teeth. No correlation could be shown between the condition of the skulls and jaws and the period interred, but it was found that the better preserved remains belonged to younger people. Dental findings included the presence of healthy and decayed teeth, gold foil restorations, gold and porcelain inlays, amalgam and silicate fillings, and vulcanite and acrylic dentures. Amalgam restorations were present in people buried from 1875 (114 years ago) and vulcanite dentures from 1882 (107 years ago). The characteristics of the earliest amalgam restorations showed that they could have been placed before 1850. Findings of this study indicate that: (a) one cannot on the appearance of exhumed remains estimate the burial period, (b) dental features were well preserved and can be used for dental identification if antimortem data are available, (c) advanced dentistry could have been practised in South Africa during the last century, and (d) recovery of human skeletal remains from old cemeteries should be undertaken with care to preserve as much information as possible. A plea is made for closer co-operation between developers of old graveyard sites and scientists in order to preserve as much information as possible.
Burial↗
Importance of radiological diagnosis applied to necroscopy.
The authors evaluate the consequences of incomplete necroscopic examinations wherein it was impossible to apply radiological resources to locate firearm projectiles. The study includes 8185 reports from the Instituto Médico-Legal Afrânio Peixoto in Rio de Janeiro, Brazil, representing the totality of corpses processed from January to December 2001; of these, 3122 were gunshot victims, 309 of which were buried with unremoved projectiles, being liable to future judicial reappraisal. During the same period, there were 23 exhumation requests by police authorities, 12 of them querying the existence of projectiles. The authors looked into the formal reasons assumed by the medico legal experts to conclude their reports from incomplete examinations, and suggest that gunshot necroscopic examinations should follow specific protocols, as incomplete autopsies will require further exhumations, at unnecessary additional costs.
Autopsy↗
Two fatal cases of selenium toxicity.
Two patients, a 36-year-old female and a 36-year-old male, separately experienced new onset nausea, vomiting, diarrhea, abdominal pain, muscle weakness and pallor. Over a period of 14-16 h these symptoms continue and progress to include hypotension refractory to therapy, pulmonary edema and cardiovascular collapse. Autopsies show hemorrhagic pulmonary edema, splenomegaly and lack of anatomical cause for sudden death. Postmortem analysis, in one case post-embalming and exhumation, revealed elevated selenium concentrations and a determination of the cause of death. These two cases present several important features associated with selenium toxicity, two of which are previously unreported: (1) selenium as a potential homicidal agent, (2) the toxidrome and time frame of selenium toxicity, (3) selenium determination in exhumed, embalmed tissues, (4) postmortem urinary selenium concentration, and (5) decrease in tissue concentrations over time.
Abdominal Pain↗
Estimating the length of incomplete long bones: forensic standards from Guatemala.
We report on new standards for estimating long bone length from incomplete bones for use in forensic and archaeological contexts in Central America. The measurements we use closely follow those defined by Steele ([1970] Personal Identification in Mass Disasters; Washington, DC: Smithsonian Institution), but we add several new landmarks. We measured the femur, humerus, tibia, and fibula of 100 Maya skeletons (68 males, 32 females) recovered from forensic exhumations. We derived the equations by regressing bone segment length on bone length, and solved for bone length to maximize the utility of the equations for taller populations. We generated equations for all segments that were significantly correlated with bone length for males, for females, and for both sexes combined, but accepted only regressions with r(2) > 0.85 as reliable. Landmarks defined by muscle attachment sites were more variable in location than landmarks on articular architecture; thus we retained few equations that use these landmarks. We tested the male and combined sex equations on 36 males of unknown ethnicity exhumed from a military base in Guatemala, and found that the equations performed satisfactorily. We also evaluated the performance of equations by Steele ([1970] Personal Identification in Mass Disasters; Washington, DC: Smithsonian Institution) and Jacobs ([1992] Am J Phys Anthropol 89:333-345) on the Maya bones, and conclude that significant population variation in long bone proportions hinders their application in Central America.
Anthropology, Physical↗
Entomofauna of buried bodies in northern France.
Autopsies of exhumed cadavers can reveal important evidence for clarification of medical insurance and social issues. This study concerns insects sampled on 22 exhumed cadavers in the Lille area. For each corpse, the species and the stages of development were noted, as well as the time elapsed after burial, the location of the cemetery, the stage of decay and possible preservation treatment. A total of eight Diptera and two Coleoptera species were sampled on the corpses. The relationships between entomofauna and conditions of burial are discussed. Three species were regularly found because of their preference for underground environments or closed environments: Conicera tibialis, typically associated with buried bodies, Leptocera caenosa which is known to be associated with human faeces, water closets, caves and cracked soil pipes, and Ophyra capensis, sometimes found on human bodies kept indoors for several months, where blowflies have not had access. Triphleba hyalinata, which is associated with human bodies in wooden coffins, was found only twice.
Animals↗
Caries prevalence in the dentition of a late eighteenth century population.
Remains of 92 individuals of known age and a further 71 of unknown age were selected from nearly 1000 skulls exhumed from the crypt of Christ Church, Spitalfields. Ante- and post-mortem tooth loss was assessed and caries prevalence and distribution were studied. Post-mortem loss of teeth was highest in the oldest age group, suggesting that greater care is needed during exhumation to minimize this loss. Juvenile caries levels were high, especially on occlusal surfaces of deciduous molars. Approximal caries was less frequently seen and buccal and lingual sites were only slightly less frequently involved than approximal sites. Root caries was rare, even in the oldest age group. There were differences in prevalence and distribution between males and females but not between those of English and French origins. Caries levels were generally higher in those born after 1750. It is suggested that factors other than diet and oral hygiene may have influenced caries prevalence in this population.
Age Factors↗
The medical and scientific evidence in alleged tubocurarine poisonings. A review of the so-called Dr. X case.
The problem of proving the presence or absence of a poison in a buried cadaver is the central theme of this presentation. Certain general questions are posed which may serve to guide those seeking to determine the cause of death in buried cadavers and allegedly due to a poison. Medicolegal and scientific evidence is presented from the court records of five deaths which were alleged homicides due to intravenous tubocurarine. As to the medical evidence: The prosecution claimed absence of adequate medical causes but full congruence with intravenous tubocurarine as the cause of death. The defense claimed and presented its evidence, including history, clinical picture, gross and microscopic pathological findings--for the deaths having occurred from competent natural causes in all but one case. In that one case the cause was undetermined. In two of the four cases evidence was presented for the mechanism of death and why they died at the time that they did. As to the forensic toxicological evidence: The prosecution claimed qualitative identification but with no particular quantitative detection or identification limits of tubocurarine in the remains based on results of combinations of HPLC followed by RIA and of some selected ion direct inlet mass spectrometry. The defense corroborated--along with a quantitative estimate--the presence of a substantial concentration of tubocurarine in the liver specimen of one case. However the chain of custody of this particular specimen was compromised for a period of several days between post-exhumation autopsy and submission to the prosecution toxicologists. With respect to all the other specimens examined by the defense, direct inlet mass spectrometry failed to show ions which are critical for establishing the identity of tubocurarine. The defense also presented results of experiments which showed that the tissues of the cases in question destroyed tubocurarine at such a rate that no reasonably conceivable administered amount could have survived the 10 years of burial of these cases. In each of the five cases exhumation and re-autopsy would have been found to be neither justified nor even indicated had an objective examination of the available record been made and supplemented by a similarly objective review of the literature and the simple stability experiments used by the defense. After an 8-month trial, the jury brought in a not guilty verdict on all counts after less than 2 h of deliberations.
Adult↗
Identification of the skeletal remains of Josef Mengele by DNA analysis.
There has been considerable controversy over the identity of the skeletal remains exhumed in Brazil in 1985 and believed to be those of Dr Josef Mengele, the Auschwitz 'Angel of Death'. Bone DNA analysis was therefore conducted in an attempt to provide independent evidence of identity. Trace amounts of highly degraded human DNA were successfully extracted from the shaft of the femur. Despite the presence of a potent inhibitor of DNA amplification, microsatellite alleles could be reproducibly amplified from the femur DNA. Comparison of the femur DNA with DNA from Josef Mengele's son and wife revealed a bone genotype across 10 different loci fully compatible with paternity of Mengele's son. Less than 1 in 1800 Caucasian individuals unrelated to Mengele's son would by chance show full paternal inclusion. DNA analysis therefore provides very strong independent evidence that the remains exhumed from Brazil are indeed those of Josef Mengele.
Concentration Camps↗
Transuranics in bone of deceased former residents of Rongelap Atoll, Marshall Islands.
Rongelap Atoll received intensive fallout from the 1 March 1954 Bravo thermonuclear test 105 miles upwind at Bikini. Fearful of their continued exposure to radiation, the residents of Rongelap Atoll went into voluntary exile in 1985. Transuranic soil concentrations on Rongelap Island are about 2-3 orders of magnitude greater than the average for the Northern hemisphere; the three dominating transuranics are 239,240Pu and 241Am. Only conflicting information has been available about the extent of transuranic uptake by the Rongelap community. As part of the Rongelap Resettlement Project, the community endorsed the exhumation of bones of deceased former atoll residents to provide an independent estimate of plutonium intake. This approach has the advantage of reducing the uncertainties associated with pathway modeling and the interpretation of urine data. Six graves (4 adults, 2 children) were selected for exhumation. Femora and tibiae were selected as well as humeri from the children's graves. The rest of the remains was left undisturbed. The results of the analysis of 239,240Pu and 241Am are presented. Assuming that the data can be considered as representative for the Rongelap population as a whole, the contamination with transuranics on Rongelap Atoll appears to result in radiation exposures in the order of 1% of the compliance limit of 100 mrem (1 mSv) effective dose equivalent per year.
Adult↗
Victim of a dictatorial regime: identification of Mr. Roberto Gomensoro Josman.
Forensic cases are ideal to test osteological techniques developed by physical anthropologists. Forensic anthropology is a scientific discipline that applies population-based standards to individual skeletal remains. Many complex techniques are used in an attempt to make a positive identification. Several of these techniques, specifically digital video superimposition and DNA, were used to identify the victim in this case. The purpose of this paper is to describe anthropological techniques used to identify the remains of an unknown person who was later identified as Mr. Roberto Gomensoro Josman, the victim of a Uruguayan dictatorial regime. Mr. Gomensoro Josman disappeared after authorities of the Uruguayan dictatorial government (1973-1984) arrested him. Six days later an unknown body was found floating in Lake Rincon del Bonete. The corpse was found tied with wire and weighted with three large stones used to keep the body submerged. An autopsy was performed and the body was buried as an unknown person in the grave identified as number 10936 of Tacuarembo Cemetery. On December 2002 the Peace and Justice Service asked the local judge to authorize the exhumation of the remains. The exhumed body was headless. An investigation revealed that the local medical examiner who had autopsied the remains on March 1973 had retained the victim's skull in his office. Osteological analysis indicated the victim was a white male in his 20s. Four good quality photographs of Mr. Gomensoro who was known to be missing were compared with the skull. To confirm the identification from the video a DNA analysis was carried out comparing the victim with relatives. DNA typing confirmed the results of the earlier identification.
Adult↗
Homicidal commotio cordis: the final blow in a battered infant.
OBJECTIVE: This report describes in detail the occurrence of inflicted commotio cordis (cardiac concussion) in a previously abused 7-week-old. Though inflicted commotio cordis has been reported in three toddlers, this is the first report in a young infant. METHOD: Following documentation of abuse in a living child, the case of a death of a prior sibling--previously regarded as natural--was re-opened for further investigation. Original autopsy materials were reviewed, and the body of the deceased child was exhumed. RESULTS: Exhumation and second autopsy documented more than 50 fractures in the deceased child. When re-interviewed, the children's father admitted to causing the injuries in both children, and gave a textbook description of commotio cordis as the mechanism of death in the fatal case. CONCLUSIONS: Commotio cordis is a rare event in which a fatal dysrhythmia--usually ventricular fibrillation--is precipitated by a blow to the precordial chest. Previous reports have indicated that homicidal commotio cordis can occur in small children. This report demonstrates that commotio cordis can occur even in the very young, previously abused infant.
Autopsy↗
Investigation of clandestine graves resulting from human rights abuses.
The role of the forensic scientist in the investigation of clandestine graves resulting from human rights abuses is discussed. Individuals buried in such circumstances have perished following abuse by persons in authority or by other political factions. Such persons have been classed by the abusers as dissidents or political opponents, or have been killed simply for belonging to a particular racial or religious grouping. Guidelines for investigation and the general approach by the scientist are suggested and examples of exhumations are cited in which the author has had personal involvement. These include exhumations carried out in the former Yugoslavia, Rwanda and Chile.
Journal Article↗
Evolution of magma-poor continental margins from rifting to seafloor spreading.
The rifting of continents involves faulting (tectonism) and magmatism, which reflect the strain-rate and temperature dependent processes of solid-state deformation and decompression melting within the Earth. Most models of this rifting have treated tectonism and magmatism separately, and few numerical simulations have attempted to include continental break-up and melting, let alone describe how continental rifting evolves into seafloor spreading. Models of this evolution conventionally juxtapose continental and oceanic crust. Here we present observations that support the existence of a zone of exhumed continental mantle, several tens of kilometres wide, between oceanic and continental crust on continental margins where magma-poor rifting has taken place. We present geophysical and geological observations from the west Iberia margin, and geological mapping of margins of the former Tethys ocean now exposed in the Alps. We use these complementary findings to propose a conceptual model that focuses on the final stage of continental extension and break-up, and the creation of a zone of exhumed continental mantle that evolves oceanward into seafloor spreading. We conclude that the evolving stress and thermal fields are constrained by a rising and narrowing ridge of asthenospheric mantle, and that magmatism and rates of extension systematically increase oceanward.
Journal Article↗