Lumbar Canal Stenosis

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bony ring of the spinal column It forms a roof like structure over the back of the spinal canal When the nerves in the spinal canal are being squeezed by a herniated disc or bone spurs a lumbar laminectomy removes the entire lamina to release pressure on the spinal nerves This is the primary type of surgery used for lumbar spinal stenosis Related Document A Patient s Guide

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As the canal space narrows the spinal cord and nearby nerve roots are squeezed causing different types of symptoms The medical term is nerve compression Figure 2 Lumbar spinal stenosis

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that hold the vertebrae together may thicken and also push into the spinal canal All of these conditions cause the spinal canal to narrow View animation of degeneration Spinal instability Spinal instability can cause spinal stenosis Spinal instability means that the bones of the spine move more than they should Instability in the lumbar spine can develop if the supporting

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A Patient s Guide to Lumbar Spinal Stenosis Introduction Stenosis means closing in Spinal stenosis describes a condition in which the nerves in the spinal canal are closed in or compressed The spinal canal is the hollow

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Introduction Stenosis means closing in Spinal stenosis describes a condition in which the nerves in the spinal canal are closed in or compressed The spinal canal is the

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are stacked on top of one another to create the spinal column The spinal column gives the body its form It is the body s main upright support The back portion of the spinal column forms a bony ring When the vertebrae are stacked on top of each other these bony rings create a hollow tube This bony tube called the spinal canal surrounds the spinal cord as it passes through

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Stenosis Lumbar spinal stenosis is a disease that is caused by a gradual narrowing of the spinal canal This narrowing happens as a result of the degeneration of both the facet joints and the

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and from repeated stresses and strains can cause a spinal disc to weaken The outer rim of the disc bulges outward and the disc may eventually protrude or even rupture into the spinal canal narrowing the size of the canal As a result the nerves inside the canal are squeezed leading to symptoms of spinal stenosis Degeneration also causes bone spurs to develop These spurs

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the upper back When the narrowed area is in the bones of the neck it is called cervical stenosis When the narrowed area is in the bones of the lower back it is called lumbar stenosis In the illustration of cervical stenosis above left the narrowing is caused by bone spurs growing into the spinal canal This puts pressure on the spinal nerves and the spinal canal

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Figure 1 top view of vertebra Spinal stenosis is a degenerative disease that causes narrowing of the spinal canal enlargement of the facet joints

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Lumbar Spinal Stenosis By Donald R Gore MD The term stenosis simply means narrowing of a canal So lumbar spinal stenosis is narrowing of the lumbar spinal canal This canal holds the nerves that form the

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Arrow shows LSS narrowing of the spinal canal causing nerve compression Lumbar spinal stenosis LSS occurs when the spine is narrowed This causes

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Changes in blood flow to the lumbar spine Symptoms of Spinal Stenosis Spinal stenosis can occur along any area of the spine cervical thoracic lumbar but is most common in the lower back If the stenosis is located on the lower part of the spinal

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the upper back When the narrowed area is in the bones of the neck it is called cervical stenosis When the narrowed area is in the bones of the lower back it is called lumbar stenosis In the illustration of cervical stenosis above left the narrowing is caused by bone spurs growing into the spinal canal This puts pressure on the spinal nerves and the spinal canal

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