See discussions, stats, and author profiles for this publication at: https://www.researchgate.net/publication/309182279 Forensic examination after exhumation: Contribution and difficulties after more than thirty years of burial Article in Journal of Forensic and Legal Medicine · October 2016 DOI: 10.1016/j.jflm.2016.10.005 CITATIONS READS 5 5,014 6 authors, including: Youssef Nouma 15 PUBLICATIONS 50 CITATIONS Wiem Ben Amar University of Sfax 26 PUBLICATIONS 29 CITATIONS SEE PROFILE SEE PROFILE Malek Zribi University of Sfax 30 PUBLICATIONS 48 CITATIONS SEE PROFILE Some of the authors of this publication are also working on these related projects: sizing and desizing View project REPARATION OF THE CRANIAL TRAUMA SEQUELAE FOLLOWING VOLUNTARY VIOLENCE View project All content following this page was uploaded by Malek Zribi on 30 April 2018. The user has requested enhancement of the downloaded file. Journal of Forensic and Legal Medicine 44 (2016) 120e127 Contents lists available at ScienceDirect Journal of Forensic and Legal Medicine j o u r n a l h o m e p a g e : w w w . e l s e v i e r . c o m / l o c a t e / j fl m Short communication Forensic examination after exhumation: Contribution and difficulties after more than thirty years of burial Y. Nouma a, b, *, W. Ben Amar a, b, M. Zribi a, b, S. Bardaa a, b, Z. Hammami a, b, S. Maatoug a, b a b Forensic Department, University Hospital Habib Bourguiba, Sfax, Tunisia Faculty of Medicine of Sfax, University of Sfax, Tunisia a r t i c l e i n f o a b s t r a c t Article history: Received 4 December 2015 Received in revised form 19 September 2016 Accepted 8 October 2016 Available online 11 October 2016 We report a case of a Tunisian footballer who was found dead abroad under suspicious circumstances. The cause of death was, originally, attributed to a lightning strike. The corpse was buried without/autopsy. Over thirty years later, the family requested the exhumation to verify the identity and the cause of death. The exhumation was performed in 2011. DNA profiling from teeth and femur bone samples confirmed the identity of the deceased. The dry bone study revealed defects in the skull and the pelvis evoking firearm injuries. Post-mortem CT with three-dimensional (3-D) reconstruction allowed to confirm the characteristics of firearms injuries and to speculate about the number and the trajectories of potential shots. Nevertheless, the vitality of these injuries as well as the eventual fatal shot and the shooting distance could not be determined. Likewise, the type of the eventual weapon could not be clarified as there were no bullets or any metallic projectile fragments. Despite all doubts, the forensic explorations have allowed to verify the identity of the deceased, to evoke firearms injuries and, mainly, to deny the proposed cause of death after more than thirty years of burial. Moreover, the loss of soft tissues and bone fragility were the major obstacles. © 2016 Elsevier Ltd and Faculty of Forensic and Legal Medicine. All rights reserved. Keywords: Exhumation Forensic autopsy Post-mortem imaging Skeletonization Firearm injuries Ballistics 1. Introduction 2. Case report The forensic examination after exhumation is one of the most complicated situations that confront the forensic pathologist. Formerly, it was considered as slightly contribute mainly in case of putrefied corpse.1 Thanks to advances in technology and scientific knowledge, currently applied in forensic medicine, like medical imaging, genetics and biology, it is established that this examination can provide valuable information concerning the corpse's identity and the cause of death.2,3 Nevertheless, forensic examination of an exhumed corpse, long period after burial, is still delicate and faces many obstacles. Corpse decomposition makes it difficult to examine the body itself and hinders the findings' interpretation as well. In this paper, we present an unusual case of exhumation performed more than thirty years after burial. We try to discuss the contribution of this forensic examination and to illustrate the major difficulties. We report a case of a 32 year-old Tunisian footballer, who was found dead abroad in 1979. At that time, the death was explained by a lightning strike that occurred during a football training session. The corpse was repatriated to Tunisia, inside a sealed coffin, under special security conditions. It has been sent directly to the cemetery and buried without an autopsy. After a short time, rumours of a possible murder by firearm shots began to arise. In 2011, after the fall of the former political regime in Tunisia, the family has requested the exhumation to remove doubt about the cause of death. Then, exhumation and forensic examination were ordered by the judicial authorities with a mission to verify the cause of death and the identity of the deceased. The exhumation was conducted with the presence of the pathologist required to perform the forensic examination. Upon opening the tomb, there was a dilapidated coffin in wood (Fig. 1a). The corpse was found in a plastic hermetically sealed bag (Fig. 1b). This bag was extracted and sent to the forensic department for examination. * Corresponding author. Forensic Department, University Hospital Habib Bourguiba, Sfax, Tunisia. E-mail address: docyoussef@live.fr (Y. Nouma). http://dx.doi.org/10.1016/j.jflm.2016.10.005 1752-928X/© 2016 Elsevier Ltd and Faculty of Forensic and Legal Medicine. All rights reserved. Téléchargé pour Anonymous User (n/a) à UNIVERSITE DE MONASTIR - 12 à partir de ClinicalKey.fr par Elsevier sur avril 30, 2018. Pour un usage personnel seulement. Aucune autre utilisation n´est autorisée. Copyright ©2018. Elsevier Inc. Tous droits réservés. Y. Nouma et al. / Journal of Forensic and Legal Medicine 44 (2016) 120e127 121 2.1. Dry bone study In the bag, bones were found lying in mud (Fig. 1b). The skin, musculoskeletal system and internal organs were absent due to extensive decomposition and body changes. Bones were washed and slimy substance surrounding them was sieved. Overall, it was possible to reconstitute a complete human skeleton measuring 172e176 cm in length (Fig. 1c). There was black curly hair measuring 6e7 cm in length covering the skull (Fig. 2). On the crane, we found: - A first round orifice in the left temporal bone (Fig. 3 a,b), - A second round orifice in the right orbit, - A bone defects in the roof and the outer wall of the left orbit and the left zygo-maxillary region separated from the first orifice by a bone bridge, that dropped during the examination because of bone fragility (Fig. 3 c,d), - A total lack of the left ascending branch and the left angle of the mandible with a small depressed area of the bone's outer table directed from outside to inside, anterior to posterior and from right to left (Fig. 4 a,b), Furthermore, we found large bone defects in the upper and anterior portion of the right ilium bone, measuring 80 mm in major axis, combined with a wide hulling area on its inner table (Fig. 4 c,d). Afterwards, we performed a series of investigations, including post-mortem imaging and genetic analysis, to accomplish our mission. However, other available analysis (toxicology, histology, chemistry, etc.) was not performed whereas the extended postmortem period (32 years). 2.2. Post-mortem imaging Post-mortem X-ray has shown bone defects described by the external examination (Fig. 5). No other fractures or metal debris were revealed. Using a helical multi-slice CT, post-mortem imaging of the skull has shown: Fig. 2. Black hair measuring 6e7 cm in length covering the skull. - A well defined round orifice in the inner wall of the right orbit measuring 25 mm in diameter (Fig. 6a), - Extensive bone fractures in the right maxillary sinus and the left zygo-maxillary region measuring 46 mm in diameter (Fig. 6 b,d), - A round orifice in the anterior segment of the nasal wall measuring 13 mm in diameter associated with a wide hulled area (Fig. 6c), - The absence of the left ascending branch and the left corner of the mandible just facing the thirty eighth molar, - Multiple fractures in the anterior floor of the base of the skull essentially on the roof of the left orbit (Fig. 6b,d), Fig. 1. (a) Situation at the place; (b) Corpse found in mud inside a plastic bag; (c) Complete human skeleton after reconstruction. Téléchargé pour Anonymous User (n/a) à UNIVERSITE DE MONASTIR - 12 à partir de ClinicalKey.fr par Elsevier sur avril 30, 2018. Pour un usage personnel seulement. Aucune autre utilisation n´est autorisée. Copyright ©2018. Elsevier Inc. Tous droits réservés. 122 Y. Nouma et al. / Journal of Forensic and Legal Medicine 44 (2016) 120e127 Fig. 3. Dry bone study: (a, b) Round orifice in the left temporal region; (c, d) Bone defects in the left orbit, the left zygo-maxillary region and the base of the skull. Fig. 4. Dry bone study: (a, b) Bone defect in the mandible with a depressed area of the bone's outer table (white arrow); (c, d) Bone defect in the upper and anterior part of the right Ilium combined with a wide hulling area (black arrow). Téléchargé pour Anonymous User (n/a) à UNIVERSITE DE MONASTIR - 12 à partir de ClinicalKey.fr par Elsevier sur avril 30, 2018. Pour un usage personnel seulement. Aucune autre utilisation n´est autorisée. Copyright ©2018. Elsevier Inc. Tous droits réservés. Y. Nouma et al. / Journal of Forensic and Legal Medicine 44 (2016) 120e127 - A medium density precipitation in the occipital region of the cranial vault containing bone fragments which measure 10 mm for the largest one (Fig. 6b). In addition, 3-D reconstruction allowed to demonstrate the bone defects, especially, in the left facial and temporal regions (Fig. 7) and to speculate on the number of the eventual shots and their trajectories. 2.3. Genetic analysis The genetic study consisted of a comparative DNA analysis to verify an eventual paternity. Then samples taken from the teeth and the femoral bone of the corpse were compared with blood samples from the alleged son of the deceased. We proceeded to the study of 12 genetic markers and the Y-chromosome by using polymerase chain reaction (PCR) amplification and short tandem repeat (STR) typing. We found that the deceased is the biological father with a paternity probability equal to 99.41697%. 3. Discussion Exhumation refers to the recovery of a previously buried body for post-mortem examination.4 It often occurs several days to months after burial.5 Some exhumation studies reported time of burial varying from 5 days to 20.5 years.3,5 However, it is rarely performed many years after interment.3,5 The forensic examination after exhumation is the last resort for the forensic diagnosis of an unexplored or improperly explored death.4 Its frequency is variable in the world and depends on various factors, particularly cultural, political and religious convictions.6,7 Unlike many other countries that have a well-defined time limit up to which exhumation can be done, in Tunisia there is no time limit for ordering of the exhumation. Even so, pursuant to the 17th section of the law n 97-12 concerning cemeteries and burial sites, it may be performed only after permission of the competent judicial authority.8 Following new information, it may be requested by the family to verify the identity of the deceased, to determine the circumstances and the cause of death4,9,10 or at least to deny recent information about death (rumours, witness statements, etc.).11 Compared with conventional autopsy, done immediately after 123 death, forensic examination on an exhumed corpse usually encounters problems.7,12 Then, the question of its possible utility should always be discussed before any exhumation.4 Previously, it needs to define the situation and decide whether the necessary information may still be detectable after the burial period.13,14 Although, even negative information gained by exhumation can be useful in some cases.4 The success of any exhumation depends not only on the technical means available to accomplish the requested mission, but also on the conservation conditions of the corpse (duration and conditions of burial, environmental influences).4,9,10,15 After a short burial time, the success rate of exhumation for medico-legal purposes varies from 66%5,7e78% of cases.14 This is less likely possible after a long period of burial.3 The major determining factors for a possible outcome at exhumation are, essentially, the absence of soft tissue, the identification of the ante-mortem or post-mortem character of the lesions and the exposure to environmental and taphonomic factors.14 In our case, over thirty years of burial, it was already expected that the corpse is in a form of skeletonized remains. According to the literature, the corpse skeletonization is estimated to occur between four years to more than 10 years.16e19 The skeleton examination differs widely from the examination of a well preserved corpse.4 Indeed, in case of firearm injuries, soft tissues provide interesting information. Skin is the seat of specific lesions that permits to affirm the ballistic nature of the trauma, to differentiate the inlet and outlet orifices, to estimate the shooting distance and to define the shooting direction.20,21 The body organs can also be the site of ballistic trajectories without any bone damage.20 Moreover, one of the most challenging steps in the analysis of skeletal trauma is distinguishing between ante-mortem and postmortem injuries. In practice, this differentiation is difficult.22 Recent studies have attempted to define variables to distinguish secondary trauma induced by environmental factors.23,24 It is described that these secondary lesions have discoloured edges compared to the rest of bone surfaces.25 As well, other studies have been conducted to determine precisely the morphological characteristics of bone trauma.26,40 However, it may often be difficult to distinguish an ante-mortem of a post-mortem lesion. Some antemortem fractures can develop over time post-mortem characteristics like colour modification or edges rounding. Likewise, postmortem lesions can mimic vital lesions.26,27 The buried corpse Fig. 5. Post mortem X-ray exams showing bone defects. Téléchargé pour Anonymous User (n/a) à UNIVERSITE DE MONASTIR - 12 à partir de ClinicalKey.fr par Elsevier sur avril 30, 2018. Pour un usage personnel seulement. Aucune autre utilisation n´est autorisée. Copyright ©2018. Elsevier Inc. Tous droits réservés. 124 Y. Nouma et al. / Journal of Forensic and Legal Medicine 44 (2016) 120e127 Fig. 6. Post-mortem CT: (a) Well defined orifice in the inner wall of the right orbit; (b, d) Extensive fracture in the right maxillary sinus; (c) Orifice in the anterior segment of the right nasal wall; (b, d) Multiple fractures in the base of the skull with a precipitation (40 HU) in the bottom of the cranial vault containing bone fragments (white arrow). Fig. 7. 3D-reconstruction of the skull showing details of bone defect. undergoes several changes from mechanical and chemical erosion due to the soil and the action of predators and plants.28 Although, in our case, the corpse has been relatively protected from environmental factors considering the burial conditions, Knight described a skeleton completely disintegrated in the coffin because of the soil conditions.28 Even though our mission was qualified difficult from the beginning, we have proceeded to the verification of the deceased identity and the determination of the cause of death. 3.1. Identity of the deceased? After thorough anthropological examination of skeletal remains we concluded that bones examined belong to an adult male having a minimum size of 170 cm. This profile, with the hair Téléchargé pour Anonymous User (n/a) à UNIVERSITE DE MONASTIR - 12 à partir de ClinicalKey.fr par Elsevier sur avril 30, 2018. Pour un usage personnel seulement. Aucune autre utilisation n´est autorisée. Copyright ©2018. Elsevier Inc. Tous droits réservés. Y. Nouma et al. / Journal of Forensic and Legal Medicine 44 (2016) 120e127 correspondence, is consistent with the footballer profile. Formal identification was provided by genetic analysis. Although, genetic analysis is the method of choice for forensic identification, the anthropological evaluation remains so contributors. A common problem with DNA analysis is the preservation of genetic material. The decomposition by bacteria or other microorganisms and the exposure to environmental agents (humidity, organic compounds, etc.) may cause post-mortem DNA degradation.29 Then, it is confirmed that bones and teeth samples are very useful in DNA analysis because of their long preservation.30e33 3.2. Cause of death? Unlike the well-preserved corpse, available information on skeletal remains is rarely used to precisely reconstruct a lethal event. Nevertheless, signs of trauma may persist in the bones.34 In our case, the forensic examination has identified bones lesions in two different locations, skull and pelvis. We did not find any other fracture or metallic foreign object. The observed lesions included round and well defined orifice in the skull, multiple fractures in the base of the skull, large defect in the lefts facial bones and defect in the right ilium bone with a large hulled area directed from outside to inside. A traumatic event on bones is generally classified as the result of driving forces effect and projectile, blunt object or sharp instruments impact.35 Generally, all of these agents generate specific skeletal signs that are easily identified in the immediate postmortem. On skeletal remains, the interpretation of these signs could be doubtful. In our case, the proposed cause of death was a lightning strike. Lightning is a transfer of an electrical charge resulting from the 125 sudden environmental discharge of static electricity.36 Then, lightning injuries result from electrical shock, thermal energy or an enormous blast force.37 These lesions are often in the form of firstand second-degree burns to the skin.38 In addition, victims may be thrown by the concussive forces of the strike and get secondary injuries.39 Particularly, bone fractures (long bones, skull and cervical spine) may be caused by the intensive muscle contraction or even by an associated blunt trauma.37e40 They are generally linear without any bones defect.41 Likewise, blunt force impact on the upper temporal or parieto-temporal areas causes, in general, fissured fractures which run obliquely downwards across the temporal area.42 As considering the aspect of fractures and bone defects, it is obvious that lesions, described above, cannot be explained by a lightning entry or exit injuries. In addition, they cannot be caused by a blunt object or a sharp instrument. However, they are consistent with firearm injuries. In such cases, innovative applications of radiology are very useful. 3-D computerized imaging, often used in case of cranial and facial fractures in skeletal remains, allows refining fracture measurements, detail patterns of trauma and showing trajectory paths involving multiple injuries. This method has also the potential to be used in the validation of bullet trajectories.42,43 Based on correlating findings of dry bone study and postmortem imaging, we can conclude that: In the skull: there were probably two separate shots: - The first shot would be gone from the inner wall of the right orbit causing a small rounded orifice. Then, the projectile would have perforated the nasal wall, causing an extensive bone hulling. The blast wave would have caused multiple fractures of the skull base and the right maxillary sinus. Then, Fig. 8. Two potential shots in the face's bones and the possible bullet paths (black arrow): (a,b) first shot, (c,d) second shot. Téléchargé pour Anonymous User (n/a) à UNIVERSITE DE MONASTIR - 12 à partir de ClinicalKey.fr par Elsevier sur avril 30, 2018. Pour un usage personnel seulement. Aucune autre utilisation n´est autorisée. Copyright ©2018. Elsevier Inc. Tous droits réservés. 126 Y. Nouma et al. / Journal of Forensic and Legal Medicine 44 (2016) 120e127 References Fig. 9. The potential shot in the pelvis and the possible bullet path (white arrow). the projectile would be coming out of the left temporal region (Fig. 8 a,b). - The second shot would have gone from the left horizontal portion of the mandible as demonstrated by the depression in its outer table. Then, it would have destroyed the angle and the left ascending branch of the mandible, the outer wall of the left orbit and the left zygomatic bone (Fig. 8 c,d). In the pelvis: It was probably a single shot, directed from back to front and from outside to inside as demonstrate the bone hulling direction (Fig. 9). Although the ballistic mechanism of bone lesions is strongly raised, we couldn't determine whether it was carried out in the ante-mortem or post-mortem time. As no foreign object was found, the projectiles would have probably left the body. In addition, there were, maybe, other shots that did not affect the bones and cannot be identified on skeletal remains. Anyway, if the shots were vital, they would be certainly fatal. 4. Conclusion After a long period of burial, determination of the cause of death persists difficult. It depends on the post-mortem interval and the burial conditions. In our case, forensic examination has confirmed the identity of the corpse and, mainly, denied the proposed cause of death. Firearm shots hypotheses were heavily discussed. Potential injuries would be certainly fatal if they were vital. The exact number of shots and the type of weapon used could not be determined. In fact, this has been limited by the absence of soft tissues, bone fragility and the absence of the projectile. Nevertheless, even without a formal conclusion, exhumation has brought great satisfaction to the family of the deceased, who was finally able to approach the truth behind his death. Conflicts of interest None. 1. Henssge C, Madea B. Leichenerscheinungen und Todeszeitbestimmung. In: Brinkmann B, Madea B, eds. Handbuch Gerichtliche Medizin. Berlin, Germany: Springer; 2004:p79ep226. 2. Thali YA, Bolliger SA, Hatch GM, Ampanozi G, Thali MJ, Ruder TD. Death by biscuit, Exhumation, post-mortem CT, and revision of the cause of death one year after interment. Leg Med. 2011;13:142e144. 3. Breitmeier D, Graefe-Kirci U, Albrecht K, Weber M, Troger HD, Kleemann WJ. Evaluation of the correlation between time corpses spent in in-ground graves and findings at exhumation. Forensic Sci Int. 2005;154:218e223. 4. 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