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Lumbar Degenerative Disc Disease

Lumbar Degenerative Disc Disease
Peter F. Ullrich, Jr., MD

Degenerative disc disease refers to a syndrome in which a painful disc causes chronic low back pain. The condition generally starts with a torsional (twisting) injury to the disc space. The injury weakens the disc and creates excessive micro-motion at the corresponding vertebral level because the disc cannot hold the vertebral segment together as well as it used to. The excessive micro-motion, combined with the inflammatory proteins inside the disc that become exposed and irritate the local area, produces low back pain.

Unlike the muscles in the back, the disc does not have a blood supply and therefore cannot heal itself and the painful symptoms of degenerative disc disease can become chronic. While it is rare that low back pain from degenerative disc disease will progress or increase, the pain will tend to fluctuate and at times may become significantly worse.

The Degenerative Process

It is important to note that disc degeneration is part of the natural process of aging and does not necessarily lead to low back pain. MRI scans have documented that approximately 30% of 30 year olds have signs of disc degeneration on MRI scans even though they have no back pain symptoms. It must therefore be stressed that not all degenerated discs that are seen on MRI scans are pain generators.

As the population ages, it is even more common for individuals to have signs of disc degeneration without pain, and by the time an individual reaches 60 years old, disc degeneration is an expected finding on an MRI scan. In fact, the incidence of low back pain actually declines as we age, despite the fact that our discs are degenerating.

A fully degenerated disc no longer has any inflammatory proteins (that can cause pain) and usually collapses into a stable position. While many people over the age of 60 have degenerated discs, it is highly uncommon for them to suffer from degenerative disc disease.

Treatment Otions

For most people, degenerative disc disease can be successfully treated with conservative care. Most patients will experience low-grade continuous but tolerable pain that will occasionally flare (intensify). The frequency and intensity of the flares can be managed with an exercise program that consists of:

  • Hamstring Stretching
  • Dynamic Lumbar Stabilization Exercises
  • Low-mpact aerobic conditioning
  • Non-prescription medications, such as NSAID’s and acetaminophen, may be helpful in alleviating low back pain, and stronger therapies, such as oral steroids or epidurals, may be prescribed to treat severe flares.

For patients who are unable to function because of the pain, or who are frustrated with their activity limitations, lumbar spinal fusion surgery is an option. Fusion surgery works because it stops the motion at a painful motion segment.

A one-level fusion does not significantly change the mechanics in the back, and a two-level fusion may also be considered for patients with severe, disabling pain. Three-level fusions change the mechanics of the back substantially and are not recommended (the back is designed for movement, and limiting the movement and altering the muscle composition can in and of itself cause pain).

When performed judiciously by an experienced surgeon trained in doing fusion surgery, a fusion surgery can be an effective option for patients to enhance their activity level and overall quality of life. Particularly now that minimally invasive techniques (ALIF with anterior interbody cages) are available to do the fusion, the surgery carries little morbidity (eg. post-operative discomfort), saves more of the normal anatomy of the low back, and has a high rate of fusion.

“Read the full article at Spine-health.com:”Lumbar Degenerative Disc Disease