IUBio

Incision and reflection of dura

Xuguang Liu xl at physiol.ox.ac.uk
Fri Jul 7 07:42:11 EST 1995


On 6 Jul 1995, Didier A. Depireux wrote:

> Date: 6 JUL 1995 20:38:41 GMT 
> From: Didier A. Depireux <didier at eng.umd.edu>
> Newgroups: bionet.neuroscience
> Subject: Incision and reflection of dura 
> 
> 
> 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

A small sharp hook made from a needle will be useful to hook up the dura 
between its two layers before you cut it through, which I have tried on 
rats, rabbits and monkeys. My clinical experience tells that it is 
much easier in human because the dura is much thicker than that in animals.

Good luck!

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  Xuguang Liu ~{AuPq9b~}, Voice: 44-(0)1865-272116; Fax: 44-(0)1865-272469 
  Email: xl at physiol.ox.ac.uk 	          http://www.physiol.ox.ac.uk/~xl/
  University  Laboratory  of  Physiology,  Parks Road, Oxford  OX1 3PT, UK
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