Several chop injuries inflicted by a boat propeller. Chop injuries are sometimes regarded as a variant of blunt force trauma. These injuries result from impact of the skin by a heavy object with a somewhat sharp facet, causing a wound that has attributes of both sharp force and blunt force trauma. Depending on how sharp the weapon is, these may resemble either gaping lacerations or large cuts with marginal abrasion and are often associated with underlying fractures. Objects that commonly cause chop injuries include axes, propellers, and lawnmower blades.
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