Crossbow injuries

The crossbow is an uncommon source of fatal injury. In Los Angeles County, two crossbow homicides have occurred in the past 20 years. Following the second case, a crossbow was test-fired into a fresh pork thigh, resulting in distinctive wounds. Experimental studies also showed that the vanes of the bolt (arrow) may be a source of trace material found in the wound.     

Survived crossbow injuries

The Hamburg University Institute of Legal Medicine presents 2 cases of injuries of crossbow arrows where the patients survived. Crossbows are used nowadays as sports and hunting weapons. They are freely obtainable, and since people without practice can shoot them, there are constant injuries and fatal cases. Crossbow arrows have a high penetration force and can even pierce bone. Depending on the tip of the arrow used, they bore or cut through tissue, here damage to the tissue being restricted to the direct surroundings. Due to the elasticity of the tissue, the arrow shaft in the wound track may have the effect of an incomplete tamponade so that major hemorrhaging is prevented. In this condition, the injured person may be conscious and capacitated. From the medical viewpoint, crossbow arrows should therefore be invariably left in the wound, secured against displacement during transport, and only removed in the hospital.     

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.     

Various forms of explosion injuries

Two different cases are reported in which a total of five persons were (mortally) injured by explosions. Although all victims were close to the region of explosion, they presented quite different patterns of injuries. These injuries allowed reconstruction of what had taken place.     

Head injuries of Roman gladiators

Gladiator remains from a recently unearthed cemetery in ancient Ephesus (Turkey) offer a unique opportunity for proving common theories involving the weaponry and techniques of gladiator fighting based on the evidence supplied by cranial bones. This mass grave is the first of its kind to undergo a thorough osteological and forensic examination.A minimum number of individuals (MNI) analyses revealed that at least 68 individuals. All individuals found turned out to have been males aged between 20 and 30 years, except for one female associated with a female slave gravestone, and one male aged 45–55 years, had been buried in this area of the cemetery. The male mean body height was 168 cm (S.D. = 5 cm), which lies inside the normal range of height for Roman populations at those times.Eleven (16% of MNI) individuals exhibit a total of 16 well-healed antemortal cranial traumata. Five of the 11 individuals showed multiple trauma. Ten (15% of MNI) individuals exhibited a total of 10 perimortal cranial traumata. This is a surprisingly high frequency of deadly head injuries, taking into account that most of the gladiator types wore helmets. A possible explanation could be the frequently reported deathblow technique used by the hammer-carrying death god “Dis Pater”.The gladiator weaponry is well known through historical sources. At least one injury per known type of offensive weapon could be identified, as well as evidence for the most popular, the gladiator trident, which was found to be represented by one perimortem and two antemortem injuries. Overall the reportedly very strict nature of combat rules for gladiator fights could be confirmed by the absence of multiple perimortal traumatized individuals, showing a lack of the excessive violence commonly observed on medieval battle ground victims.This graveyard gives the opportunity to confirm historical aspects and to check the reliability of forensic methods for identification of antemortem, perimortem, or postmortem bone lesions. Typical examples for these kinds of lesions and injuries are presented. The colour of the margins of the traumata proved to be the most distinguishing feature for postmortal lesions.     

Head injuries of Roman gladiators

Gladiator remains from a recently unearthed cemetery in ancient Ephesus (Turkey) offer a unique opportunity for proving common theories involving the weaponry and techniques of gladiator fighting based on the evidence supplied by cranial bones. This mass grave is the first of its kind to undergo a thorough osteological and forensic examination. A minimum number of individuals (MNI) analyses revealed that at least 68 individuals. All individuals found turned out to have been males aged between 20 and 30 years, except for one female associated with a female slave gravestone, and one male aged 45-55 years, had been buried in this area of the cemetery. The male mean body height was 168 cm (S.D.=5 cm), which lies inside the normal range of height for Roman populations at those times. Eleven (16% of MNI) individuals exhibit a total of 16 well-healed antemortal cranial traumata. Five of the 11 individuals showed multiple trauma. Ten (15% of MNI) individuals exhibited a total of 10 perimortal cranial traumata. This is a surprisingly high frequency of deadly head injuries, taking into account that most of the gladiator types wore helmets. A possible explanation could be the frequently reported deathblow technique used by the hammer-carrying death god "Dis Pater". The gladiator weaponry is well known through historical sources. At least one injury per known type of offensive weapon could be identified, as well as evidence for the most popular, the gladiator trident, which was found to be represented by one perimortem and two antemortem injuries. Overall the reportedly very strict nature of combat rules for gladiator fights could be confirmed by the absence of multiple perimortal traumatized individuals, showing a lack of the excessive violence commonly observed on medieval battle ground victims. This graveyard gives the opportunity to confirm historical aspects and to check the reliability of forensic methods for identification of antemortem, perimortem, or postmortem bone lesions. Typical examples for these kinds of lesions and injuries are presented. The colour of the margins of the traumata proved to be the most distinguishing feature for postmortal lesions.     

Tentative injuries in self stabbing

The distribution, incidence and character of tentative injuries occurring in self-inflicted stabbings are discussed with reference to 29 cases dealt with by The Departments of Forensic Medicine at two London Teaching hospitals. Tentative wounds were encountered in only half of the cases in our series.     

Fatal and near-fatal animal bite injuries

Fatal and near-fatal maulings of humans by pit bulls have recently become a topic of major public concern, resulting in the passage of laws in some jurisdictions that make the owner of a pit bull criminally liable for manslaughter if his or her pet causes a human death. The authors recently investigated two cases in which children were fatally injured by pet dogs. In the first case, a 17-day-old girl suffered fatal abdominal injuries when attacked by a pregnant Siberian husky. A 2-year-old girl expired from neck wounds inflicted by a pit bull or a rottweiler or both. Because no expert would testify as to which dog caused the fatal injury, the owner of the animals was not charged under a statute which specified criminality only if a pit bull caused the fatal injury. We also examined a 12-year-old boy who attempted to pet a circus tiger; the animal grabbed his arm with its claws and bit off the arm at the shoulder. The arm could not be reattached, but the child survived. These cases and the differentiation of animal bites from other injuries will be presented.