ANT 3520 Lecture Notes - Lecture 8: Blunt Trauma, Trauma Ii, Homicide
17 Feb 2016
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Document Summary
Trauma iii: blunt force trauma may result in an imprint of the object being left behind. Can provide evidence of the implement by approximating the margins or outline. Perpetrators typically use the same weapon throughout a homicide. The same weapon can inflict different injuries. Hammers can make compression fractures and triangular indentations. Sharp force trauma- perimortem: caused by an implement with a sharp end, narrow and wide focus- see trauma ii, blunt force trauma over a very small area. Very narrow focus: sufficient force that bone fails at point of contact, sharp instruments produce. Incised wounds- cutting implements longer than they are wide. Can vary with type of blade, application of force, track across tissues. Can get different cut-marks with the same weapon. Sharp-ended weapon thrust along long axis into tissue. Bone defects often provide info on instrument: width, depth, cross-sectional shape.
