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Pain-Management

17 August 2010

What is an epidural?

The epidural space is a very narrow space that is situated immediately outside the spinal fluid.

The epidural space is a very narrow space that is situated immediately outside the spinal fluid, and separated from it by a special membrane called the ‘dura mater’ or dural membrane (hence the name epi-dural, outside the dura).

When the nerves leave the spinal cord, they have to go through the spinal fluid, through the dural ‘sac’ and through the epidural space, and then through the side openings in the spinal column. From here they run their different courses to the organs or limbs they innervate (supply). The nerves transmitting signals from the body to the spinal cord and brain follow the same route, but in opposite directions.

 

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