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They may cause substantial internal bleeding or secondary injuries, such as a collapsed lung, which may not be readily evident during primary assessment.

Such wounds can be misleading, as they may appear quite small on surface examination, but extend quite deeply into the body, even damaging nerves, blood vessels, or internal organs. Puncture: Sharp object penetrates the tissue and travels inward, but does not move laterally in any direction from the point of entry.Most often caused by an object with a broken or serrated edge, such as a piece of broken glass or metal, but may also be caused by a blow from a blunt object to tissue with bone immediately behind it. The direction of the wound is random rather than straight, and it may have multiple branches. Laceration: Jagged edges to the wound margins, more closely resembling a tear than a slice.Tissue is rarely missing from the wound site, and the margins of the wound may be easily matched from one side of the wound to the other for the purposes of closure. These can vary in size, and may be caused by a variety of objects, including a scalpel, a knife, any piece of straight, sharp metal, or a piece of glass. Incision: Straight edges to the wound margins, as if sliced with a knife.

The most common descriptors of wounds are these:

Descriptions may include wound size (length) and thickness plainly visible wound characteristics such as shape and open or closed and origin, acute or chronic. Wounds are normally described in a variety of ways.

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