Criteria for homicide and suicide on victims of extended suicide due to sharp force injury

This report is about the findings in association with the extended suicides of nine victims killed by sharp force. All victims were killed by sharp force. The perpetrators were predominantly the parents, the victims their children. Regarding the criteria for differentiating self-inflicted injuries from injuries inflicted by another person, the victims' injuries presented patterns usually found solely in suicides. Thus eight of nine cases presented tentative and hesitation injuries, in three of five cases areas of injury covered by clothing had been exposed beforehand. Despite extremely narrow intercostal spaces in children, injuries to the bones in thoracic stabbing were avoided more often than not (four of seven cases). Only the criterion "defence injury" occurred nearly as often as in homicide victims (three of nine cases). The psychopathology of extended suicide can explain this pattern. The perpetrator's motive is characterised by his pseudoaltruistic belief to save the loved ones from a world that is in his opinion unacceptable. A fusion or integration of the victim into the perpetrator's own self is based on an identity problem. Physical interrelation of forces between perpetrator and victim restricts the victim in his defence and presents an important prerequisite for acquiring the patterns of described injuries.     

Multivariate analysis ('forensiometrics')--a new tool in forensic medicine. Findings on the victim of sharp-force homicide can predict the inter-relationship with the perpetrator.

A multivariate 'forensiometric' technique (PLS-DA) was used to create a model to predict the relationship between homicide victim and perpetrator on a five-level scale: strangers, acquaintances, drinking companions, relatives and spouses. The model is based on findings on the victim and at the venue, and uses the following ten variables as 'predictors', listed in falling order of covariation with instances of close relationship between victim and perpetrator: Victim found in home, female victim, a single sharp injury, injuries to the upper extremity, superficial sharp injuries to the chest ('scratches'), ten or more sharp injuries, presence of defence injuries, total number of sharp injuries, male victim, and victim found outdoors. The model was based on 87 sharp-force homicides (the model-set) and was validated on another set of 43 sharp-force homicides (the test-set). In this test-set validation, 17 of 39 cases (44%) were correctly predicted according to the results of earlier combined forensic and police investigations, and a prediction one step away from the correct level was given in another 17 cases. These results were significantly better than would have been obtained by chance.     

Importance of electromyography and the electrophysiological severity scale in forensic reports

Forensic reports on traumatic peripheral nerve injuries include dysfunction degrees of extremities, which are arranged according to the Turkish Penalty Code. The aim of this study is to discuss the role and importance of electromyography while preparing forensic reports in the cases of traumatic peripheral nerve injuries and the usefulness of scoring systems. A modified global scale, recommended by Mondelli et al., was used to assess the electrophysiological impairment of each peripheral nerve. Forensic reports of 106 patients, reported between 2002 and 2004, were evaluated. Thirty-four percent of the cases were reported as "total loss of function," 41.5% were reported as "functional disability," and there were no dysfunctions in the other cases in forensic reports that were prepared based on Council of Social Insurance Regulations of Health Processes and Guide prepared by the Council of Forensic Medicine and profession associations of forensic medicine. When we rearranged these forensic reports based on the electrophysiological severity scale (ESS), it was clearly found that all of the score 2 cases and 86.7% of the score 3 cases corresponded to "functional disability" and 91.4% of the score 4 cases correspond to "total loss of function." We found a significant correlation between the ESS and functional evaluation in peripheral nerve injury cases. Evaluation of functional disabilities in peripheral nerve injuries with the ESS represents a standardized and objective method used for forensic reports.     

Computer aided shot reconstructions by means of individualized animated three-dimensional victim models

In cases of lethal firearm injuries with indefinite indications concerning self-versus third-party infliction a computer enhanced reconstruction with the aim of an anatomical feasibility study can provide significant clues concerning the course of the traumatic event.To this end an exact three-dimensional geometrical model of the victim including all relevant anatomical data as well as the careful documentation of the injuries and a three-dimensional model of the characteristic outlines of the weapon true to scale is generated with the help of an animation program (POSER Version 4, Meta Creation, Egisys AG).With this animated digital three-dimensional model of the victim and the weapon a series of simulation sequences is created by variation of the body positions and the grasp of the weapon. Anatomically impossible positions in view of the physical characteristics of the victim and the site and direction of the bullet path are automatically excluded from the reconstruction. An exact match of the simulation sequence and the real injuries is a statement for a possible self-infliction of the gunshot wound.     

Analysis of blunt trauma injuries: vertical deceleration versus horizontal deceleration injuries

There are several similarities found in blunt trauma injuries to humans sustained as a result of vertical deceleration (falling) and those sustained as a result of deceleration in a horizontal plane (automobile accidents). However, examination of the patterns of traumatic skeletal injuries can distinguish those injuries associated with falling from heights from those associated with automobile accidents. While there is considerable variation within each type of blunt trauma injury dependent on the angle at which one falls or is struck, there are several characteristic skeletal features associated with each type of trauma. In this study we review both the current literature and human skeletal remains from the University of New Mexico's Documented Collection known to have been subjected to blunt trauma. This collection is used to characterize and differentiate the pattern of skeletal injuries to various parts of the body for each type of trauma. These assessments are applied to investigate the traumatic skeletal lesions observed in a forensic case where the manner of death is unknown. Analyses suggest two possible scenarios that would explain the death of the individual investigated, with death most likely related to a vehicular-pedestrian accident.     

Injuries due to deliberate violence in areas of Denmark. II. Victims of homicide in the Copenhagen area

As part of a transcultural investigation of injuries due to deliberate violence in Denmark and South America, homicides in the Copenhagen area were studied for a 1-year period. Forty-five cases corresponding to a rate of approximately 2/10(5) per year were recorded. The rate seems to be increasing and the pattern changing with a higher frequency of stabbing and with an increasing frequency of high blood-alcohol concentrations in the victims. The highest number were killed at home. In the majority of cases the aggressor and the victim knew each other. A reduction in alcohol consumption is indicated as a possible preventive measure.     

Cervical findings and petechial hemorrhages in falls from high positions

Cases of combined suicide are infrequent findings, especially cases in which each method can be lethal. In interpretation of cases with a multitude of serious injuries it might be impossible to discover minor injuries which had occurred in the course of a preceding confrontation, because they may be masked by the general traumatization. In two cases of suicidal fall from a height neck injuries and petechial bleedings were found. The first case (woman 53 years) was a combination suicide (strangulation by ligature, deep incisions into her wrists, jump out of the window). The intensive petechial bleedings in the face could be explained as a result of ligature strangulation and the fracture of a lower thyroid horn as an indirect fracture resulting of the head traumatization. In the second case (girl, 14 years) petechial bleedings in the face were found. Furthermore the victim had marks on her neck-skin, consisting of well-lined bleedings and scratches, presenting a clear pattern, which could be related to a necklace. An explanation of these injuries as a result of a direct impact could not be given. Something must have happened prior the fall. Informations concerning the last hours before her suicide could not be obtained but a strangulation-attempt (by herself? by others?) must be ascertained. The histological investigation of the skin of this region arised a negative vital reaction, therefore a very short interval between that event and the death was assumed.     

实验性脑挫伤后caspase-3表达的免疫组织化学研究

目的 观察大鼠在不同程度及不同时间脑挫伤后caspase-3表达的变化。方法 对48例实验性脑挫伤大鼠的脑组织进行检验,同时以10例非脑挫伤的脑组织做对照。结果 伤后1h,caspase-3即有表达;24～48h达高峰,2周时仍有阳性细胞存在。阳性细胞多集中于挫伤区及周围带皮质和脑实质内海马区;不同程度脑挫伤组之间于伤后1h,12h,24h,72h,1周和2周caspase-3表达有差异。结论 不同程度脑损伤后caspase-3表达量不同;在脑损伤后caspase-3的表达有时间变化规律,对探讨脑挫伤后二次损害原因和研究脑挫伤程度有一定意义。     

Association between homicide injury severity and benzodiazepine influence

There are case reports of offenders inflicting excessive injuries on their victims when under the influence of benzodiazepines. However, the potential association between benzodiazepine influence on the offender and victim injury severity in a general homicide population has not been studied. We investigated associations between offender positive testing for benzodiazepines or z-drugs (zolpidem, zopiclone and zaleplon) and victim injury severity. Data were drawn from 95 Swedish homicide cases from 2007–2009 in which offenders had known toxicology. There were no significant differences in injury severity between cases in which the offender tested positive vs. negative for benzodiazepines/z-drugs. Thus, the findings do not support the hypothesis that there is an association between benzodiazepine influence on the offender and victim injury severity in a general homicide population.

Key points

• Some previous studies have linked benzodiazepines to aggression, violence and excessive homicide injuries.
• The present study analysed the association between homicide injury severity and benzodiazepine status of the offender.
• Offenders who tested positive for benzodiazepines did not inflict more severe injuries on their victims.
• These findings do not support the hypothesis that benzodiazepine influence generally causes offenders to inflict more severe injuries on homicide victims.

     

Immunohistochemical distribution of C-reactive protein in the hepatic tissue in forensic autopsy

Previously, we examined the expression of C-reactive protein (CRP) in hepatic tissues in fatal injuries (injury deaths) immunohistochemically, and classified the CRP distribution into three patterns: diffuse (D-) pattern, diffuse with strong positivity in the hepatic lobules; periportal (PP-) pattern, characterized by positive cells in the periportal region of some lobules; focal (F-) pattern, showing small islands of positive cells in some lobules. There was a relationship between the CRP distribution and the survival time. In this study, we further analyzed the deaths including those due to other than fatal injuries (non-injury deaths), and a study of a total of 314 deaths from various causes was performed. Generally, non-injury deaths showed findings similar to those in injury deaths. PP- and/or F-patterns were observed in 43.7% of cases having a short survival time (<6 h), but found in only 3% of those surviving longer (>6 h), showing that such findings are suggestive of a short survival time. D-pattern was found more frequently in non-acute deaths (60.4%), than in acute deaths (10.9%). In acute deaths, D-pattern was found in some cases showing extensive tissue injuries, such as burns and polytrauma, and inflammative predisposition. Immunohistochemical findings also showed some correlation with the serum CRP level. Our data suggest that hepatic CRP immunohistochemistry may be a useful tool for elucidating the dying process.     

Fifty Years After the 1967 Crime Commission Report

In the 50 years since the U.S. President's Commission on Law Enforcement and Administration of Justice under President Johnson issued its report, feminist activism and both feminist and mainstream research have resulted in defining domestic violence (DV) as a social problem. This awareness of the seriousness and expansiveness of DV has spurred the development of unprecedented programs and policies. Although DV policing changes have been significant, so too have been the development of and changes in safehouses, no‐drop court policies, domestic violence courts, community‐coordinated responses, and batterer intervention programs. In this article, we review the nonpolice responses to DV cases and outcomes and provide recommendations. First, research and policies need to more regularly be aimed at addressing victims’ safety and their diverse needs and experiences. Second, assessments should include addressing the processing of these cases through the impact of responses by individual community and criminal legal system actors (e.g., victim advocates, police, prosecutors, and judges) to victims and offenders.     

Patterns in sharp force fatalities--a comprehensive forensic medical study

A ten-year series of 142 homicidal fatalities caused by sharp force injury was studied with the aim to systematize information inherent in the characteristics of the victim and the pattern of injuries. The population of victims consisted of 112 males (79%) and 30 females (21%); among perpetrators, 125 (88%) were males. Among victims as well as among perpetrators, persons of non-Swedish origin were overrepresented in relation to their share of the nonselected population. In 82 cases (58%), one or two wounds had been inflicted; in 23 cases (16%), ten or more wounds. In the latter group, eleven victims but no perpetrators were female. In the majority of cases victim and perpetrator were known to each other, and in instances of multiple wounding, a close relationship between the two was clearly more common than in the group of one- to two-wound fatalities. Tests for blood alcohol were positive in 86 of 116 victims (74%), the majority being in elimination phase. Furthermore, 96 of 120 perpetrators (80%) had positive tests or were known to be drunk at the time of the killing. In multiple wound fatalities, alcohol inebriation was less common both among victims and perpetrators. In these cases, the two persons involved were usually closely related or intimately known to each other, and in the absence of psychiatric disorder in the assailant, the motive was of a passionate type.     

Gunshot reconstructions based on individually parametrical 3-dimensional victim models]

In cases of lethal firearm injuries computer enhanced anatomical feasibility studies can provide unambiguous clues concerning self-versus extraneous infliction. To this end individualized digital 3-dimensional geometrical models of the victim and the weapon are generated true to scale with the help of the CAD software (POSER Version 4, egi.sys AG). All anatomical data relevant to the motion apparatus and the range of movement as well as the injuries of the individual victim are carefully documented and serve as input parameters for the digital geometrical model. The bullet path is visualized as a cylinder between entrance and exit wound. A series of simulation sequences then can be carried out by the variation of anatomically possible shot positions and the virtual grasp of the weapon. An exact alignment of the firearm's barrel and the bullet path is a reliable statement for the feasibility of self-infliction. In addition to circumstantial evidence the digital reconstruction of the firearm shot admits of unambiguous conclusions about the course of the traumatic event.     

The Impact of Specialized Domestic Violence Units on Case Processing

This study involves an evaluation of an innovative approach to the handling of domestic violence (DV) cases in the city of Cleveland, Ohio that includes (1) a DV Project composed of specially trained police detectives, prosecutors and victim advocates for investigating and prosecuting domestic violence cases involving adult female victims who are married to, cohabitating with, or have a child with the defendant; and (2) a Dedicated Domestic Violence Docket that involves two Municipal Court judges hearing all of the domestic violence cases that are handled by the DV Project. We collected data on six months of domestic violence cases occurring in the latter half of 2008 (N?=?1388), by linking records from the Cleveland Police Department, the Prosecutor’s Office, and the Municipal Court. We found that very few victims in police districts lacking the DV Project follow up with a prosecutor to pursue the case further, indicting that specialized DV units in police departments can have a significant impact on the number of DV cases that move forward through the criminal justice system. DV Project cases were slightly less likely to result in charges issued by prosecutors (OR?=?.499) but more likely to result in dismissals (OR?=?2.545) and referrals to DV treatment programs (χ²?=?3.88).     

创伤性骨关节炎法医学鉴定41例分析

目的探讨创伤性骨关节炎的法医学鉴定要点。方法总结苏州同济司法鉴定所2006~2010年受理的41例创伤性骨关节炎法医临床学鉴定案例,对被鉴定人的性别、年龄、致伤方式、损伤部位、损伤形态、影像学表现、治疗方式、创伤性骨关节炎确诊的时间间隔等资料进行回顾性统计、分析。结果法医学检验检见生理结构破坏合并功能障碍7例,功能障碍30例,生理结构与功能检查均未见明显异常9例,另2例临床于外伤后短时间内即诊断为创伤性骨关节炎的,法医学鉴定时未予认定。创伤性骨关节炎影像学表现的严重程度与疼痛、功能障碍等临床表现并没有显著的相关性。结论创伤性骨关节炎作为骨折后常见的并发症之一,好发于负重关节,发生的间隔时间不一,其临床表现严重程度较影像学表现对法医学鉴定意见的意义更大。     

Homicidal and suicidal ligature strangulation--a comparison of the post-mortem findings

Suicides by ligature strangulation are rare events. In Berlin (3.5 million inhabitants; ca. 500 suicides per year) approximately one case per year occurs. Here, we present the main findings of 19 cases investigated between 1978 and 1998, compared to 47 cases of homicidal ligature strangulation. Two of the 19 suicidal victims had single fractures of the upper thyroid horns and one victim a fracture of a lower thyroid horn; other types of laryngohyoid injuries were not observed. In the homicidal series, the laryngohyoid structures were unaffected in 26 cases (12 of these victims were children or adolescents), single thyroid horn fractures were present in three cases and more significant injuries in 18 cases. Macroscopic bleedings of the laryngeal muscles were found in 12 victims of the homicidal group and in none of the suicidal. Bleedings in the neck muscles seldom occurred in suicides. According to these findings, the laryngohyoid injuries can be helpful in the differentiation of suicide from homicide, if more than a single thyroid horn fracture or a laryngeal soft tissue trauma is present.     

Fatalities associated with home-made pipe bombs in Northern Ireland

Pipe bombs are crudely constructed improvized explosive devices which are easily made at home. They are increasingly used by terrorists and others, and may inflict serious injuries and cause death. Four fatalities have occurred in association with their use in Northern Ireland between 1998 and 2002. In 2 cases, death was due to penetrating shrapnel injuries to the chest causing laceration of the great vessels, and a third fatality occurred due to a bomb fragment penetrating the cranial cavity. A pipe bomb exploded close to the back of the head of a fourth victim and this was associated with a severe brain injury. The pathologist was able to determine the position of the victim in relation to the explosion by interpreting the pattern of injuries. It seems likely that 2 of the victims had been involved in the construction, transport, or use of the devices. A third victim was entirely innocent and had been in the process of removing a pipe bomb, which had been thrown through the window of her home, when it exploded. The fourth victim was a member of the security forces who had been struck by a bomb fragment, in the region of the right eye, during a period of sectarian unrest.     

Mock jurors’ expectations regarding the psychological harm experienced by rape victims as a function of rape prototypicality

We examined mock jurors’ judgments in a rape case that was either prototypical (late-night assault by a stranger in a public place) or non-prototypical (daytime assault by an acquaintance in a private home). We also varied the psychological harm experienced by the victim as a result of the rape (mild anxiety or posttraumatic stress disorder (PTSD)). We hypothesized that participants’ expectations regarding the level of harm the victim is likely to experience would mediate the effect of harm level on ratings of the victim’s credibility, and this indirect effect would be contingent on the prototypicality of the case. In a pilot experiment we demonstrated that people expect prototypical rape cases to be more traumatic for victims than non-prototypical cases. In the main experiment, and as predicted, participants in the Prototypical condition expected the victim to develop PTSD more than mild anxiety, but Non-Prototypical condition participants expected the opposite. In addition, a level of harm that was consistent rather than inconsistent with their expectations led participants to rate the victim as more credible; they also rated her as less responsible for what happened, and they thought the defendant was more likely guilty and that he should be incarcerated for a longer period of time.     

Fatal and non-fatal injuries caused by crossbows

Today in modern times, traumatic injuries caused by crossbows are a rarity. The largest collection of cases so far is presented in this study, consisting of four fatalities (two homicides and two suicides) and two non-fatal injuries (grievous bodily harm and an accident). All the victims were male having an age between 31 and 54. The weapons, which were used, were mainly high-performance precision crossbows with telescopic sights and hunting bolts. The parts of the body involved were the facial/head area in three of the cases and the thorax in three of them. There were either deep or total penetration injuries to the cranium and thorax with the bolt remaining in the wound in four out of six cases. The persons with non-fatal crossbow injuries exhibited comparatively few symptoms, despite the sometimes extensive involvement of the interior of the cranium (cerebrocranial penetration, in one instance). The two cases of suicide favoured the body areas often found with gun-users. The aetiological classification of crossbow injuries may be difficult after the removal of the bolt. The external morphology is strongly dependent on the type of tip used. Multiple-bladed hunting broadheads produce radiating incised wounds, whereas conical field tips produce circular to slitlike defects. Correspondingly, the external injuries can be reminiscent of the effects of a violent attack by sharp force or of a gunshot wound. The possibility, supported by clinical data, that the victim might have the ability to act or even to survive for a period of time, even with penetration of the brain, should be taken into account when the cause of death is being investigated.     

Asphyxia Homicides in Finland, 1983–2012

Finland has one of the highest homicide rates in Western Europe, and almost every tenth homicide is caused by asphyxiation. Reliable statistics, a strict legislation, and an exceptionally high medico-legal autopsy rate formed a base for a nationwide analysis of asphyxia homicides (n = 383) during 30 years. The cases were identified through multiple records, and all the forensic pathology case files were studied in detail. In more than one out of five cases, there were indications of staging, and the homicide was revealed first at autopsy in close to one in ten cases. The vast majority of the homicides took place in private locations and involved persons known to each other. Every third victim was an intimate partner, and every tenth a child. Almost half of the victims died from manual strangulation, one in three from ligature strangulation. Smothering, choking, neck compression with a firm object, and thoracic compression were more rare methods. Drownings were excluded from this study material. Of all the victims, 7% had no observable external injuries. Petechiae were recorded in approximately in 61%, laryngohyoid fractures in 47%, and vocal cord hemorrhages in 16% of the cases. Every tenth female victim had genital injuries. Toxicological analyses were performed in close to all of the cases, and almost three out of four victims tested positive for blood alcohol. The various aspects of the demographics and autopsy findings covered in this study contribute reliable and accurate data to further strengthen the spectrum of observable medico-legal characteristics of asphyxia homicides.