Lumbar spondylosis is principally a disease of mid and later life. As the lumbar discs and associated ligaments undergo aging, the disc spaces frequently narrow. Thickening of the ligaments that surround the disc and those that surround the facet joints develops. These ligamentous thickening may eventually become calcified. Compromise of the spinal canal or of the openings through which the spinal nerves leave the spinal canal can occur.
Causes of Lumbar Spondylosis
Spondylosis is caused by degenerative changes within the intervertebral discs. The soft, elastic material dries out and loses height. Thickening of the ligaments that surround the disc occurs. Alterations of the alignment of the joints that connect the back of the spine also occurs. These other ligaments undergo further degenerative changes, thickening and potential calcification.
Signs and Symptoms of Lumbar Spondylosis
Lumbar spondylosis reduces the ability of the involved segment to go through its normal range of motion. Back pain and back stiffness are common. Compression of the nerves within the spinal canal or the nerves exiting the spinal canal can lead to pain, numbness or weakness in the legs, buttock or bowel and bladder. Abnormalities of gait can occur. Occasionally, these degenerative changes can produce instability of the spine. Alterations in the alignment of the spinal segments, or spondylolisthesis, can lead to deformity of the spine and further pain and neurological symptoms.
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Medical Content Last Updated on 07/12/2008
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