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The identification of blunt force trauma in thermally altered remains using reconstruction and computed tomographyPendray, Jennifer 08 April 2016 (has links)
Various traumatic events such as automobile accidents, structure fires, or terrorist attacks result in traumatic and thermal injury. Fire is a destructive force that can alter or destroy evidence, and thermal alterations have negative effects on forensic and anthropological recovery and analysis. Blunt force trauma is particularly difficult to analyze because of the multiple ways in which this trauma appears on a body and the variety of objects that can impact and fracture a bone or the variety of ways a body can impact a blunt surface. As fire is a common way to cover up a crime and blunt force trauma is used as a means to kill or injure an individual, it is necessary to understand the differences between these two types of fractures that can present together on bone. The present study was performed to determine the amount of survivability of traumatic fracture patterns in remains that have been exposed to a burning event. The sample used for this investigation was composed of twenty limbs (forty long bones) from five full-grown, domestic, female sheep (Ovis aries) obtained from a farm in Connecticut. Thirty specimens were traumatized with the head of an Estwing ball peen hammer and ten were left as controls. After specimens were subjected to blunt force trauma, each was radiographed using Computed Tomography. They were then placed in a small structure, 8' x 8', that was constructed to simulate the conditions of a house fire.
Each post-burn bone was analyzed based on a number of characteristics. A trauma score of "1" no trauma, "2" ambiguous, and "3" traumatic fractures were given based on these observations. CT scans were examined after bone samples had been analyzed. Again, each specimen's CT scan was given a trauma score ("1" no trauma, "2" ambiguous, and "3" traumatic fractures). Results from the bone analysis on the 30 traumatized and burned specimens revealed that 15 did not have trauma, 2 were ambiguous (i.e., they may have trauma but traumatic characteristics were not distinct), and 13 presented with distinguishable traumatic injury. Comminuted was the most prominent type of fracture, and the next most common fracture was oblique. The majority of traumatic injury was found on the middle portion of the bone. CT examination showed that 12 specimens had suffered traumatic injury. The two analyses were compared and showed an agreement of 83.3% between the trauma scores. Results show that differentiation of traumatic and thermally induced fractures is possible using various fracture characteristics as well as taphonomic indicators to determine the sequence of events.
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Rib Fracture Patterns in Fatal Motor Vehicle AccidentsKelbaugh, Cristina Lynn 20 April 2015 (has links)
Rib fractures are present in 25 percent of all trauma-related deaths, making the mechanism and pattern of rib fractures an important area of trauma research (Lien et al. 2009). Rib fractures are important to consider when researching trauma because they can cause serious complications contributing to an individual's mortality.
This retrospective research study focuses on rib fracture patterns in fatal motor vehicle accidents (MVAs). The sample consists of 105 MVA victims--68 males and 37 females. Data was collected at the Hillsborough County Medical Examiner's Office in Tampa, Florida. The study investigates motor-vehicle-related deaths from 2011 to 2013 to establish rib fracture patterns in association with several variables. Fractures of the manubrium and sternum are included in the analyses since the ribs articulate in several places with the manubrium and sternum and they are frequently injured in MVAs.
First, this research study investigates the rib fracture patterns that exist in correlation to soft tissue organ injury. Injuries to the heart, lungs, liver, diaphragm, and spleen were analyzed based on their direct contact with the ribcage. The results show that several significant relationships exist, including that lung injury is about 12 times more likely to occur when a fracture is present in the left middle ribs and 4 times more likely to occur when there is a fracture on the manubrium. Heart injury is found to be 9 times more likely to occur when the sternum is fractured and the liver is found to be 4 times more likely when the right middle ribs are fractured and 0.3 times more likely when the right high ribs are fractured.
Second, this study examines rib fracture patterns controlling for seatbelt use, airbag deployment, and cardiopulmonary resuscitation (CPR) administration. Each of these variables is tested to determine their influence in causing injury and the fracture patterns resulting from accidents. For drivers, specifically, it is also tested if fracture patterns can predict seatbelt use. The results show a significant relationship between fracture of the left low ribs and seatbelt use. In drivers, it is 5 times more likely that the individual was wearing a seatbelt if the left low ribs are fractured. Lastly, a significant relationship was found for fractures of the manubrium and CPR administration.
Finally, this research study aims to predict the number of ribs fractured by an individuals' age. Progressive mineralization of the skeleton and other age-related changes increase the risk of fracture in elderly individuals. The results of this study indicate a significant, positive correlation between age and the total number of rib fractures sustained in MVAs, supporting the presumption that elderly are at a higher risk for rib fractures.
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Fracture variations in survivable versus fatal craniofacial blunt force trauma associated with intimate partner violenceSaenz, Nicole 03 November 2023 (has links)
Intimate partner violence (IPV) is a global human rights issue that affects approximately 25% of women and 10% of men and is the leading cause of homicides of women worldwide. Multiple studies have been conducted by medical and dental practitioners to screen for indicators of IPV so that victims can be directed toward resources for help. However, despite its prevalence, injury patterns indicative of intimate partner homicide (IPH) have not previously been studied. Given that blunt force injuries are the primary type of trauma associated with IPV and the second leading trauma associated with IPH (after gunshot trauma), craniofacial fracture patterns from blunt force trauma associated with IPH served as the focus of this study. Using computed tomography (CT) scans obtained from the New Mexico Office of the Medical Investigator of identified victims of IPH, the fracture location and quantity of fractures were compared a compilation of results from previously published studies on IPV. In addition, data on fracture type were collected on the IPH sample, as this can provide information about the fracture-causing blow. This study aimed to determine whether there are differences in fracture patterns associated with IPH versus incidence of IPV that were survived. It was found that some trends present in IPV cases were maintained in IPH cases--such as a concentration of fractures to the mid-face-- fractures in IPH cases were more distributed over the skull and presented with an more frequently on the upper face and cranial vault, as well as fractures to the right side of the body.
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Weapons, warfare and skeleton injuries during the Iron Age in the Ancient Near EastPretorius, Johan 06 1900 (has links)
Due to the nature of war, persons are killed with various types of weapons.
Throughout the history of humanity, weapons were used in this regard and these
weapons left injuries on the victims that are distinguishable. The type of force
conveyed by the ancient weapons effected injuries that enable modern-day
bioarchaeologists to extrapolate which weapons caused which injuries. The
Assyrians depicted their wars and battles on reliefs. An analysis of these depictions,
with an extrapolation of the lesions expected in skeletal remains, could contribute to
better understanding of the strategies of war in ancient times. This dissertation will
discuss how the evaluation of human remains in comparison to Assyrian reliefs may
contribute to the chronological knowledge of war and warfare in the Iron Age Ancient
Near East – especially at Lachish. A discourse of the approaches available to
researchers regarding access to data in the forensic bioarchaeological field will be
presented. / Biblical and Ancient Studies / M.A. (Biblical Archaeology)
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