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Bulging Disc in the Spine

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Bulging Disc in the Spine

If you have been told that you have a bulging disc in your neck or low back, you are not alone.  Millions of people have discs that compress that end up “bulging” or what is also called “protruding”, or a disc protrusion.  These two terms are almost exactly the same.  A disc protrusion can be a localized compression in a third or a quarter of the entire circumference of the disc.  A disc bulge would be a compression of at least half of the disc or a generalized compression around the entire disc and is much more common.

Medical professionals across the US, including radiologists, will often times use the two terms interchangeably.  The most important question to ask your doctor if you’re told that you have a disc bulge or protrusion is at exactly what level of the spine this has occurred, to what degree measured in millimeters, and what if any structures are effected.  For example, is there a nerve root pinched or does it cause some degree of spinal or foraminal stenosis.

Where I get a little agitated about physician’s (including MD’s, DO’s and DC’s) descriptions of disc compression is when they call a disc bulge or protrusion a disc “herniation”.  These are two different diagnostic entities.  Here is why:  A disc compression will be an out-pouching or more generally a literal bulging of the annual fiber (the 50 to concentric rings of the support structures of the outer disc material).  This can be analogized to the classic radial tire on your car whereby if you see the interior, you’ll find a mesh of cord structures that are wound together to create strength.  So the disc compression can cause the typical and most common bulging of the disc, especially commonly seen in typical degenerative arthritis of the spine.  This is in contrast to a herniation whereby there will be a significant localized out-pouching of the disc where a particular stress or injury to the spine causes a localized injury or disruption of the annular fibers themselves.  The difference is that a disc herniation is a greater degree of focal or localized out-pouching than a protrusion.  The classic difference is that a protrusion is considered a ‘herniation’ when the AP (anterior to posterior or front to back) diameter is greater that the width.

And finally, the greatest degree and a situation that generally causes the highest level of symptoms for a patient is called a disc “extrusion”.  This is a disc tear or severe compression that results in a portion of the inner disc material (the annulus fibrosis) to be force outside the wall of the disc sometimes resulting in compression of the associated nerve root or spinal cord.  This is generally much more significant in terms of nerve compression signs and oftentimes may need surgical intervention to relieve the pressure that ensues.

An increase in disc pressure and disc disruptions such as tears from specific lifting injuries and biomechanical stresses can all create disc bulges or a herniation.   My main focus in my approach to patient care is prevention.  This is why I designed PILLO1, the therapeutic pillow that helps reduce stress and strain of your neck while you sleep.  Please look into the PILLO1 line of sleeping pillows to learn more about my patented inventions.

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