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Back Problems Message Board


Back Problems Board Index


Welcome to the board. Your symptoms are coming from a common problem called stenosis, which is a Greek word that means "narrowing." In general, this occurs when something enlarges, becoming too large for its space, and pushes into a spinal nerve or the central canal where the spinal cord and cauda equina are housed.

In your case, the disc between the L4 and L5 vertebrae is bulging. (If you know little about intervertebral discs and their degeneration, you can find tons of info online about bulging disc and herniated disc). This is the most common location for a disc problem simply due to the fact that this L4-5 segment is the most mobile, and consequently, suffers the most from wear and tear. A result of wear and tear is sometimes the formation of a synovial cyst, a benign fluid-filled sac that forms as a result of some degenerative process...and again, most common at L4-5! Again, this is something that forms and takes up space that is needed for the nerves to function normally, just like a disc bulge. As it fills with fluid, it puts additional pressure on the nerves. As the nerves in the central canal become compressed, they respond by sending out signals of distress which we feel as pain or tingling, numbness, etc. Depending on which specific spinal nerve is affected, we will feel these symptoms in the lower back or anywhere along the path of that specific nerve...thus, pain running into buttocks and legs.

The thecal sac is the thick membrane that contains the nerves of the central canal ( known as the spinal cord as it runs from the brain to about the beginning of the lumbar spine...at this point the nerves bundle together into a thick rope of nerves called the cauda equina and runs on down until it branches into two and become the sciatic nerve that runs into each leg....sometimes people just refer to the entire length as the "spinal cord.")
Hi I'm looking at your advice also thank you
As I have l4l5 bulge & synovial cyst


[QUOTE=teteri66;5402186]Welcome to the board. Your symptoms are coming from a common problem called stenosis, which is a Greek word that means "narrowing." In general, this occurs when something enlarges, becoming too large for its space, and pushes into a spinal nerve or the central canal where the spinal cord and cauda equina are housed.

In your case, the disc between the L4 and L5 vertebrae is bulging. (If you know little about intervertebral discs and their degeneration, you can find tons of info online about bulging disc and herniated disc). This is the most common location for a disc problem simply due to the fact that this L4-5 segment is the most mobile, and consequently, suffers the most from wear and tear. A result of wear and tear is sometimes the formation of a synovial cyst, a benign fluid-filled sac that forms as a result of some degenerative process...and again, most common at L4-5! Again, this is something that forms and takes up space that is needed for the nerves to function normally, just like a disc bulge. As it fills with fluid, it puts additional pressure on the nerves. As the nerves in the central canal become compressed, they respond by sending out signals of distress which we feel as pain or tingling, numbness, etc. Depending on which specific spinal nerve is affected, we will feel these symptoms in the lower back or anywhere along the path of that specific nerve...thus, pain running into buttocks and legs.

The thecal sac is the thick membrane that contains the nerves of the central canal ( known as the spinal cord as it runs from the brain to about the beginning of the lumbar spine...at this point the nerves bundle together into a thick rope of nerves called the cauda equina and runs on down until it branches into two and become the sciatic nerve that runs into each leg....sometimes people just refer to the entire length as the "spinal cord.")[/QUOTE]





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