I doubt there would be NO fluid in the spinal cord, but very often physicians cannot tap the spinal cord to obtain fluid, sometimes, they just cannot get in. In cases like this, they will often send the person to radiology for a CT assisted lumbar puncture
There is a condition called dry tap, that is when no fluid drained out while lumbar puncture is performed.
Fluid thickening due to inflammatory process (called arachnoiditis) may be one of its causes (because it thickens, it cannot pass the syringe)
a spinal tap, or lumbar puncture
5 ml
spinal tap ....also known as lumbar puncture
It's the same. Two terms used for one procedure. Or we may say that lumbar puncture is a spinal tap that is done in lumbar area, while spinal tap can also be performed right below the occipital bone (called suboccipital puncture). All in all it's a procedure to obtain the fluid that surrounds the brain and spinal cord.
spinal cord
A "spinal tap" is also known as a "lumbar puncture".Lumbar puncture
The arachnoid mata is not the site of a lumbar puncture. The site of a lumbar puncture is between the level of L4 and L5 vertebra in the lumbar section of the spine. This is used because at this point and below, there is no spinal cord to damage. The LP draws a liquid known as cerebrospinal fluid (CSF) from the meninges surrounding the spinal cord in order to examine for infection risk mainly.
The medical term for surgical puncture of the spine is "lumbar puncture" or "spinal tap." This procedure involves inserting a needle into the spinal canal to collect cerebrospinal fluid for diagnostic or therapeutic purposes.
A needle is inserted, usually between L4 and L5 (the fourth and fifth lumbar vertebrae), into the epidural space (below the level of the spinal cord), withdrawing spinal fluid for diagnostic purposes.
The dura (sack containing the spinal cord and also the spinal fluid) is surrounded by the epidural space. So, when placing a lumbar puncture needle ("spinal" needle) successively through: the skin of the lower back, the underlying fat, the ligaments that run vertically between the spinous processes of the spine, it will have to go across the epidural space, then puncture the dura and enter the spinal fluid, a few milliliters of which is then sent for laboratory testing.
A lumbar puncture is a common medical procedure in which a spinal needle is introduced into the epidural space with the objective of drawing a small amount of cerebrospinal fluid for analysis. It can also be done to inject medications and sometimes iodinated contrast media.
Lumbar Puncture.