Reversed configuration of the muzzle imprint mark in a pistol contact entrance wound mimicking a non-suicidal act

Author(s):  
Petr Hejna ◽  
Miroslav Šafr ◽  
Roman Kramář ◽  
Štěpánka Pohlová Kučerová ◽  
Lenka Zátopková ◽  
...  
Keyword(s):  
2020 ◽  
pp. jramc-2019-001369 ◽  
Author(s):  
Seth C Taylor ◽  
D C Kieser ◽  
N Hammer ◽  
B Ondruschka ◽  
E Kranioti ◽  
...  

BackgroundHandguns and rifles are often involved in violent deaths such as homicide and suicide. Consequently, forensic investigations are important to clarify the nature of ballistic trauma.MethodsThis study investigated the differences in entrance and exit wound morphology with Bos taurus (bovine) scapulae that have two cortical layers surrounding a central cancellous bone section which are comparable with human flat bones, with a series of experiments using six different calibres (0.22 Long Rifle, 9×19 mm North Atlantic Treaty Organization, 0.40 Smith & Wesson, 0.45 Automatic Colt Pistol, 5.56×45 mm and 7.62×51 mm). B. taurus (bovine) scapulae were used for closed range 30 cm simulated executions.ResultsThe ballistic experiments presented similarities in entrance wound morphology and exit wound bevelling with that of recognised forensic cases. As muzzle velocity increased, bevelling increased. Circumferential delamination is clearly visible with full metal jacket rounds, yielding similar bone damage morphology as human crania.ConclusionBovine scapulae seem appropriate for ballistic simulations of flat bone injuries on the macroscopic level, if the correct portion of the scapulae is deployed. More research is needed to further substantiate these interpretations.


2017 ◽  
Vol 51 (4) ◽  
pp. 395-406
Author(s):  
Isabella Mercurio ◽  
Daniele Capano ◽  
Paride Minervini ◽  
Mario Gabbrielli
Keyword(s):  

2019 ◽  
Vol 70 (4) ◽  
pp. 1239-1241
Author(s):  
Camelia-Oana Muresan ◽  
Roxana Zavoi ◽  
Veronica Ciocan ◽  
Raluca Dumache ◽  
Ramona Parvanescu ◽  
...  

One of the main objectives of the forensic expertise in gunshot injuries is establishing the direction of the shooting. The first step of the process is represented by studying the macroscopic differences in the morphology of the entrance and exit wounds, which in most cases suffice for the differential diagnosis between entrance and exit wound. In some cases, making the difference by using morphology alone is not possible, because the two wounds may present common or peculiar features. In these cases, analytical investigations can help in solving this important aspect of the case investigation. The detection of carboxyhemoglobin (COHb) in the perilesional tissues is one of the differentiation criteria between entry and exit wound. In some cases of short range shooting included in our study group, we determined the COHb concentration in blood sampled from the entrance wound. COHb values ranged between 10% and 60%. Given the known chemical stability of COHb, its determination can also prove useful in the examination of putrefied bodies, where the morphology of the gunshot wounds is more or less altered, depending on the stage of putrefaction.


2006 ◽  
Vol 130 (9) ◽  
pp. 1283-1289 ◽  
Author(s):  
J. Scott Denton ◽  
Adrienne Segovia ◽  
James A. Filkins

Abstract Context.—Gunshot wounds are the most common cause of homicidal death in the United States. Analysis and interpretation of fatal gunshot wounds is an important and common practice among forensic pathologists. Additionally, for pathology residents, it is an integral aspect of their training during their rotations at medical examiner or coroner offices. Objective.—The correct interpretation of gunshot wounds by forensic pathologists not only provides valuable information that can assist law enforcement in their investigation but also is essential for the final determination of manner of death. Discussion of the practical, basic, and essential skills required to interpret gunshot wounds include distinguishing a classic entrance wound from an exit wound; recognizing atypical entrance and exit wounds; utilizing the features of soot and stippling patterns to differentiate among contact, close, and distant range gunshot wounds; understanding of the trauma produced by gunshot wounds; and understanding the importance of recovering and documenting/handling any projectiles recovered at autopsy. Data Sources.—This article reviews numerous standard forensic pathology textbooks and the pertinent literature to formulate practical guidelines to assist the pathologist in the performance of forensic autopsies and the investigation of gunshot wound fatalities. Conclusions.—Pathologists who perform investigations and autopsies to determine the cause and manner of death in gunshot wound cases must be aware of the implications, requirements, and pitfalls in interpretation of the injuries so that the examination fulfills its expectations to the community and the justice system.


1927 ◽  
Vol 23 (1) ◽  
pp. 132-133
Author(s):  
A. D. Grigoriev

The author points out that when shots are fired at a long distance, the bullet, having traveled a long distance, loses its centrifugal force and acts only percussively, more slowly passing through the thickness of tissues and injuring them much more than when fired at close range, so that a traumatic ring is formed in the circumference of the entrance wound.


2006 ◽  
Vol 22 (1) ◽  
pp. 73-75 ◽  
Author(s):  
M Atilla Argin ◽  
Ayca Yilmaz ◽  
Emrah Arslan ◽  
Kadircan Keskinbora
Keyword(s):  

2005 ◽  
Vol 119 (4) ◽  
pp. 217-222 ◽  
Author(s):  
M. Große Perdekamp ◽  
B. Vennemann ◽  
D. Mattern ◽  
A. Serr ◽  
S. Pollak
Keyword(s):  

2021 ◽  
Vol 20 (1) ◽  
pp. 50-57
Author(s):  
Jaiyeoba Ojigho Jennifer Efe ◽  
Odokuma Emmanuel Igho ◽  
Umukoro Joysour Mamuyovwi

Context:Skeletal injuries discovered from human remains are classified into antemortem,perimortem and postmortem. Studies that documents injuries of various skeletal elementsis of vital importance to forensic anthropologist. Aim: This study investigated antemortem,perimortem, postmortem and other injuries caused by various instruments among skeletal elements. Methodology: A total of 200 bones of unknown age and gender were studied.Injuries were interpreted based on basic features specific to them and each was described andphotographed. Chisquare test was used to show association between skeletal elements andtime of injuries. Statistical evaluation was done using SPSS 20 Software Version. Significance was accepted at p<0.05. Result: The bones from this study showed 17.50% antemortem, 24%perimortemand 57% postmortem. Findings showed that 49.50% of the bones had blunt forceinjury, 30.50% had sharp force while 20.00% had ballistic injuries. Basic features of antemorteminjuries were smooth and round fractured edges within bones. Sharp, smooth fractured edgeswere observed among perimortem bones in contrast to irregular, blunt fractured edges anduneven discoloration in postmortem bones .Straight line incisions were seen in bones withsharp force injuries,presence of an entrance wound in ballistic injuries while an impact area wasdiscovered in most bones with blunt force injury.Findings showed that there exist a significantassociation between ante, peri and postmortem injuries in the ulnar,radius and femur bones(X2=25.32;13.35;10.11. p=0.000;0.001,0.006) Conclusion: Bones from this study showed morepost mortem blunt force injury. Bangladesh Journal of Medical Science Vol.20(1) 2021 p.50-57


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