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Incision and reflection of dura

Ben Walker bw2r at virginia.edu
Tue Jul 11 08:48:19 EST 1995

didier at eng.umd.edu (Didier A. Depireux) wrote:
>During surgery on a mammal, we perform a small (5mm by 5mm) craniotomy, 
>and we want to expose the underlying cortex for single electrode recordings. 
>For this, we have to incise and reflect the dura, but I am not satisfied
>with our method. Basically, we take very fine forceps and iridectomy 
>scissors, rub the forceps on the dura until, at some point, something 
>in the dura actually gets caught by the forceps, lift the dura, cut it
>and further resect it with the scissors. 
>When you do that, it really feels like you are rubbing against the dura 
>until something breaks on it, and you use the slit you just made to lift 
>the dura, pia and arach. membrane and cut through the meninges. It seems 
>to me that there should be a better way. 
>What do people on this group do when they are faced with having to expose 
>cortex? How do neurosurgeons do it with humans, without (obviously)
>damaging the underlying cortex?
>					Didier
>					didier at src.umd.edu


	I use an instrument called a dura hook to make incisions in the dura of rodents. I think they 
come in a variety of sizes, and can be found in most any surgical tools catalogue. I got mine 
from Roboz Surgical Instruments.

Hope this helps!

Ben Walker
bw2r at virginia.edu

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