The spine is an interdependent system of 34 vertebrae, more than 100 joints, 120 muscles, and 23 discs. Our discs are designed to provide cushioning between the vertebrae, and provide us with flexibility and range of motion. Unlike muscles, our discs have a minimal blood supply. When structures in our body are injured, blood supplies the healing nutrients and oxygen needed for repair and healing. This means that once a spinal disc is injured, it cannot repair itself the way our muscles can.
Affected discs may be located in the neck (cervical spine), middle of the spine (thoracic spine), or in the lower back (lumbar spine). Once we suffer an injury to a disc, it degenerates in three general stages that may occur over a period of 20 to 30 years:
- Dysfunction caused by the pain of the injury.
- A long phase of relative instability at the vertebral segment cushioned by the injured disc, causing intermittent back pain.
- Re-stabilization of the injured disc accompanied by a decrease in episodes of back pain.
Demographic studies show that degenerative disc disease causes less back pain for elderly adults than it does for adults between the ages of 30 and 50. However, disc degeneration can lead to the onset of other spinal conditions that do cause back pain for elderly adults. These conditions include:
- Spinal stenosis. This form of spinal degeneration can occur in the cervical or lumbar spine. It causes the spinal nerve roots to be compressed, and can cause tingling, weakness, or numbness—the symptoms of sciatica.
- Osteoarthritis. This disease causes a breakdown of the cartilage between the facet joints located in the back of the spine. The facet joints become inflamed, and back motion and flexibility decrease. Over time, bone spurs typically form on the facet joints in response to joint instability.
- Spondylolisthesis. When the facet joints degenerate significantly, they can become mechanically ineffective, causing one vertebra to slip out of place, causing back pain and/or leg pain.
Depending on the diagnosis, Minnesota Occupational health physicians may refer patients to a specialist at Summit Orthopedics. Summit’s back specialists diagnose spinal problems and design custom treatment plans built on a conservative, non-surgical approach. Most patients find relief through treatments including guided injections, specialized physical therapy, biofeedback, exercise, activity modification, and medication. When conservative care does not relieve symptoms, surgical options are discussed. Patients and their care team will determine the best course of action.