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Title of Journal: Int J Legal Med

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Abbravation: International Journal of Legal Medicine

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Springer-Verlag

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1437-1596

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When backyard fun turns to trauma risk assessment

Authors: Matthias Frank Oliver Jobski Britta Bockholdt Rico Grossjohann Dirk Stengel Axel Ekkernkamp Peter Hinz
Publish Date: 2011/01/29
Volume: 126, Issue: 1, Pages: 13-18
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Abstract

Although potato cannons are an area of great interest among internet users they are almost completely unknown in the medical community These simple ballistic devices are made from plastic plumbing pipes and are powered with propellant gas from aerosol cans By combustion of the gas–oxygen mixture a high pressure is produced which propels the potato chunks through the barrel It is the aim of this study to investigate the hazardous potential of these shooting devices Test shots were performed using three illegally manufactured potato cannons that were confiscated by police authorities Velocity impulse kinetic energy and energy density were calculated The risk of head and chest injuries was investigated by using Sturdivans Blunt Criterion BC an energy based five parametric trauma model assessing the vulnerability to blunt weapons projectile impacts and behindbodyarmor exposures The probability of lethality due to blunt impact trauma to the chest was assessed using Sturdivans lethality model For potential head impacts all test shots far exceeded the critical BC head value which corresponds to a 50 risk of skull fracture The risk of injury with regard to chest impacts was similar All but two test shots far exceeded the critical BC chest value corresponding to a 50 risk of sustaining a thoracic skeletal injury of Abbreviated Injury Scale 2 or 3 The probability of a lethal injury due to blunt chest impact was as high as 20 To conclude this work demonstrates that potato cannons should be considered dangerous weapons rather than as toys used by adventurous adolescents

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