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Drill press flycutter

On an historical note, there are examples of successful trepanning operations dating over 2000 BC in India. Thye know it was successful, due to clear evidence of bone regrowth. I believe the North American west coast natives also performed successful trepanning before contact with Europeans.
Oh okay that's very interesting, my extremely old and limited information on the subject suggested that the procedure was almost always resulted in infection and death.
 
Exactly the opposite. When I said 'successful' there was considerable or complete regrowth of the trepanned holes. Thus the patient lived years after the operation. I'm sure the recovery rate compared to modern surgery was a lot lower in the day.
 
I mean by that, that the small number of examples that have been unearthed have all showed bone regrowth. Many times journalists have mistakenly reported injuries resulting in death as trepanned. I found out about this because my daughter was in in archaeology and disabused me on the subject.
 
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