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Degenerative Disc (cont.)

What is degenerative disc disease? What are the symptoms?

As we age, the water and protein content of the cartilage of the body changes. This change results in weaker, more fragile and thin cartilage. Because both the discs and the joints that stack the vertebrae (facet joints) are partly composed of cartilage, these areas are subject to wear and tear over time (degenerative changes). The gradual deterioration of the disc between the vertebrae is referred to as degenerative disc disease. Wear of the facet cartilage and the bony changes of the adjacent joint is referred to as degenerative facet joint disease or osteoarthritis of the spine.

Degeneration of the disc is medically referred to as spondylosis. Spondylosis can be noted on x-ray tests or MRI scanning of the spine as a narrowing of the normal "disc space" between the adjacent vertebrae.

Degeneration of the disc tissue makes the disc more susceptible to herniation. Degeneration of the disc can cause local pain in the affected area. Any level of the spine can be affected by disc degeneration. When disc degeneration affects the spine of the neck, it is referred to as cervical disc disease. When the mid-back is affected, the condition is referred to as thoracic disc disease. Disc degeneration that affects the lumbar spine is referred to as lumbago. Lumbago causes pain localized to the low back and is common in older people. Degenerative arthritis (osteoarthritis) of the facet joints is also a cause of localized lumbar pain that can be detected with plain x-ray testing. The pain from degenerative disc or joint disease of the spine is usually treated conservatively with intermittent heat, rest, rehabilitative exercises, and medications to relieve pain, muscle spasm, and inflammation.

What are radiculopathy and sciatica? What are the symptoms?

Radiculopathy refers to nerve irritation caused by damage to the disc between the vertebrae. This occurs because of degeneration ("wear and tear") of the outer ring of the disc or because of traumatic injury, or both. Weakness of the outer ring leads to disc bulging and herniation. As a result, the central softer portion of the disc can rupture through the outer ring of the disc and abut the spinal cord or its nerves as they exit the bony spinal column.

When nerves are irritated in the neck from degenerative disc disease, the condition is referred to as cervical radiculopathy. This can lead to painful burning or tingling sensations in the arms. When nerves are irritated in the low back from degenerative disc disease, the condition is called lumbar radiculopathy, and it often causes the commonly recognized "sciatica" pain that shoots down a lower extremity. This condition can be preceded by a localized low-back aching. Sciatica pain can follow a "popping" sensation at onset and be accompanied by numbness and tingling. The pain commonly increases with movements at the waist and can increase with coughing or sneezing. In more severe instances, lumbar radiculopathy can be accompanied by incontinence of the bladder and/or bowels.



Next: How is radiculopathy diagnosed? »

Degenerative Disc Disease & Sciatica - Effective Treatments

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