Originally posted by PRIVATE INVESTIGATOR 1
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You do know that ecchymosis is bruising, yes?
If you stab someone the blade doesn't cause bruising, it is the hilt of the knife, or your fist as it hits the body that causes ecchymosis.
When blood vessels are injured they bleed out into the surrounding skin - this is ecchymosis.
If I slash someone with a blade, there is no ecchymosis, for the simple reason all the injured blood vessels bleed out towards the open wound.
Blood in the human body is under pressure so when you get a knife wound the blood runs out into the open air, not in towards the body.
So, when Dr. Bond noticed ecchymosis, he knew the neck had endured some physical abuse prior to the use of the knife. Whether this abuse was from fingers or a cord around the neck might have been impossible to establish, as he says, due to the extent of random slashing left-to-right, or right-to-left, also impossible to establish with any certainty.
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