Ulus Travma Acil Cerrahi Derg. 2020; 26(6): 911-919 | DOI: 10.14744/tjtes.2020.76960

The analysis and shooting reconstruction of the ricocheted shotgun pellet wounds

Gökhan Ýbrahim Öðünç¹, Mustafa Tahir Özer², Ali Ýhsan Uzar², Mehmet Eryýlmaz², Mustafa Mercan^3
1Gendarmerie and Coast Guard Academy, Institute of Security Sciences, Ankara-Turkey
²Department of General Surgery, Gülhane Training and Research Hospital, Ankara-Turkey
³Department of Forensics, General Command of Gendarmerie, Ankara-Turkey

BACKGROUND: In this study, a 35 years old man was killed with the ricocheted shotgun pellets wounds from the asphalt road surface. The Public Prosecutor to define the ricochet point requested the ricocheted pellet pattern examination in two different ricochet distances.
METHODS: The ten ricochet tests were performed for at 2 meters (point A) and 1 meter (point B) from the target, and the pellet distribution and pattern area were calculated using the gauss method. Then, the test and autopsy results were compared in the pellet number, calculated pellet pattern area and ricocheted angle. Furthermore, the similarity of the pellet number and the pellet pattern areas were examined using the two-tailed Mann-Whitney U test.
RESULTS: In this study, 81 pellets recovered from the victim’s body and the distribution pattern of pellets area was 2134 cm2. At the ricochet point A, the average number of pellets on the target was 82.1 and the distribution pattern of pellets area was 2700 cm2. At the ricochet point B, the average number of pellets on the target was 132.6 and the distribution pattern of pellets area was 4928 cm2. According to the two-tailed Mann-Whitney U test, there was low-level similarity (p<0.05 level Sig. 0.023; z=-2.424) on the pellet pattern area between autopsy and the ricochet point A. However, as regards the pellet number on the target, there was a similarity (p<0.05 level Sig. 0.481; z=-0.808) between autopsy and the ricochet point A.
CONCLUSION: Test results showed that the pellet ricochet occurred two meters from the victim.

Keywords: Pellet ricochet, shooting reconstruction; shotgun wounds; wound ballistics.

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Seken av tüfeði saçma tanesi yaralanmalarýnýn analizi ve atýþýn yeniden yapýlandýrýlmasý

Gökhan Ýbrahim Öðünç¹, Mustafa Tahir Özer², Ali Ýhsan Uzar², Mehmet Eryýlmaz², Mustafa Mercan^3
1Jandarma ve Sahil Güvenlik Akademisi, Güvenlik Bilimleri Enstitüsü, Ankara
²Gülhane Eðitim ve Araþtýrma Hastanesi, Genel Cerrahi Anabilim Dalý, Ankara
³Jandarma Genel Komutanlýðý, Kriminal Daire Baþkanlýðý, Ankara

AMAÇ: Bu çalýþmada, asfalt yol yüzeyinden seken saçma tanelerinin 35 yaþýndaki erkeðe isabet etmesi sonucunda ölüm olayý gerçekleþmiþtir. Savcýlýk makamý, saçma tanelerinin sektiði noktanýn tespit edilmesi için iki farklý sekme noktasýndan saçma tanesi daðýlým kalýbý analizini talep etmiþtir.
GEREÇ VE YÖNTEM: Hedeften 2 metre (A noktasý) ve 1 metre (B noktasý) uzaklýkta bulunan iki sekme noktasýna 10’ar adet test atýþý yapýlmýþtýr. Atýþlar sonrasýnda hedefte oluþan saçma tanesi daðýlým kalýplarýnýn alanlarý Gauss metodu ile hesaplanmýþtýr. Ardýndan, test sonuçlarý ile otopsi sonuçlarý, hedefe isabet eden saçma tanesi sayýsý, daðýlým kalýbý alanlarý ve sekme açýlarý bakýmýndan karþýlaþtýrýlmýþtýr. Ayrýca, hedefe isabet eden saçma sayýsý ile saçma daðlým kalýbý alanlarýnýn otopsi verileriyle olan benzerlikleri iki kuyruklu Mann-Whitney U testi ile incelenmiþtir.
BULGULAR: Kurbanýn vücudundan 81 adet saçma tanesi elde edilmiþtir ve saçma tanesi daðýlým kalýbýnýn alaný 2134 cm2’dir. A sekme noktasýna yapýlan atýþlarda hedefteki ortalama saçma tanesi sayýsý 82.1 ve saçma tanesi daðýlým kalýbýnýn alaný 2700 cm2’dir. B sekme noktasýna yapýlan atýþlarda hedefteki ortalama saçma tanesi sayýsý 132.6 ve saçma tanesi daðýlým kalýbýnýn alaný 4928 cm2’dir. Ýki kuyruklu Mann-Whitney U testi sonuçlarýna göre A noktasýndan saçma tanelerinin daðýlýmý ile otopsi sonuçlarý arasýnda düþük seviyede (p<0.05 level Sig. 0.023; z=-2.424) benzerlik bulunmaktadýr. Bununla beraber A noktasýndan seken saçma tanesi sayýsý ile kurbanýn vücudundan elde edilen saçma tanesi sayýsý arasýnda benzerlik (p<0.05 level Sig. 0.481; z=-0.808) bulunmaktadýr.
TARTIÞMA: Test sonuçlarýna göre saçma taneleri kurbana 2 metre mesafeden sekerek isabet etmiþtir.

Anahtar Kelimeler: Atýþýn yeniden yapýlandýrýlmasý, av tüfeði yaralanmasý; saçma tanesi sekmesi; yara balistiði.

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