Explanation of an epidural procedure

The spine is made of many parts. The spine contains spinal fluid and no fluid is ever injected into this space.
The spinal cord containing the spinal fluid is protected by a sheath of duramater.
Another sheath around the duramater is called the epidural space with epi meaning above the duramatter.
During an epidural procedure, a fluid is injected just above the duramater into the EPIDURAL SPACE and NOT into the spinal fluid column.
A doctor must be very careful to inject a fluid into the epidural space and not into the spinal column fluid.