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February 10, 2012

Sciatica (cont.)

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What are risk factors for sciatica?

Risk factors for sciatica include degenerative arthritis of the lumbar spine, lumbar disc disease, and trauma or injury to the lumbar spine.

What are sciatica symptoms?

Sciatica causes pain, a burning sensation, numbness, or tingling radiating from the lower back and upper buttock down the back of the thigh to the back of the leg. The result is lumbar pain, buttock pain, hip pain, and leg pain. Sometimes the pain radiates around the hip or buttock to feel like hip pain. While sciatica is often associated with lower back pain (lumbago), it can be present without low back pain. Severe sciatica can make walking difficult if not impossible. Sometimes the symptoms of sciatica are aggravated by walking or bending at the waist and relieved by lying down. The pain relief by changing positions can be partial or complete.

How is sciatica diagnosed?

Sciatica is diagnosed with a physical exam and medical history. The typical symptoms and certain examination maneuvers help the health care professional to diagnose sciatica. Sometimes, X-rays and other tests, such as CT scan, MRI scan, and electromyogram, are used to further define the exact causes of sciatica.

What are treatment options for sciatica?

Bed rest has been traditionally advocated for the treatment of acute sciatica. But how useful is it?

To study the effectiveness of bed rest in patients with sciatica of sufficient severity to justify treatment with bed rest for two weeks, a research team in the Netherlands led by Dr. Patrick Vroomen randomly assigned 183 such patients to bed rest or, alternatively, to watchful waiting for this period.

To gauge the outcome, both primary and secondary measures were examined. The primary outcome measures were the global assessments of improvement after two and 12 weeks by the doctor and the patient. The secondary outcome measures were changes in functional status and in pain scores, absenteeism from work, and the need for surgical intervention. Neither the doctors who assessed the outcomes nor those involved in data entry and analysis were aware of the patients' treatment assignments.

The results, reported in the New England Journal of Medicine, showed that after two weeks, 64 of the 92 (70%) patients in the bed-rest group reported improvement, as compared with 59 of the 91 (65%) of the patients in the control (watchful-waiting) group. After 12 weeks, 87% of the patients in both groups reported improvement. The results of assessments of the intensity of pain, the aggravation of symptoms, and functional status revealed no significant differences between the two groups. The extent of absenteeism from work and rates of surgical intervention were similar in the two groups.

The researchers concluded that "among patients with symptoms and signs of a lumbosacral radicular syndrome, bed rest is not a more effective therapy than watchful waiting." Sometimes, conventional wisdom is not as wise as research!

Other treatment options for sciatica include addressing the underlying cause, medications to relieve pain and inflammation (including oral and injectable cortisone) and relax muscles, and physical therapy. A variety of low back conditioning and stretching exercises are employed to help people recover from sciatica. Surgical procedures can sometimes be required for persisting sciatica that is caused by nerve compression at the lower spine. Sometimes pain management specialists help with chronic sciatica conditions.


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