Numbness
	Weakness
	Radiculopathy
	Sciatica

Sciatica refers to pain that begins in the hip and buttocks and continues all the way down the leg. This condition is often accompanied by low back pain, which can be more or less severe than the leg pain. The term "sciatica" indicates that the sciatic nerve, which travels from the lower back through the buttocks and into the leg, is thought to be the cause of the pain. True sciatica occurs when a herniated lumbar disc compresses one of the contributing roots of the sciatic nerve. This type of low back pain is less common than other causes that produce back pain. For instance, sporting activities, recreational activities, and heavy labor can cause back and leg pain, which is commonly misdiagnosed as sciatica. The challenge for a physician is to distinguish between radicular pain, which is caused by an inflamed nerve root, and referred pain, which is a result of a musculoskeletal sprain or strain.

Illustration of the areas where compression of the lumbar and sacral/coccygeal nerves causes loss of sensation or pain (innervation). The offending nerve root can often be identified by the distribution (dermatomes) of symptoms.

The most common symptom of true sciatica is posterior thigh, lower leg or foot pain that can be much worse than the accompanying lower back pain. Usually a patient will experience moderate to severe pain, which begins in the buttocks and runs down through the leg or foot. It is important to know that true sciatica will produce pain that radiates beyond the knee. Often a patient will have a previous history of lower back pain beginning a few days or weeks before the leg pain occurs, then the leg pain becomes worse than the back pain, and in some cases the back pain will completely disappear.

In cases involving a longstanding history of sciatica, however, the pain may gradually become localized to the buttocks and back of the leg. In this situation, the patient may have a vague aching pain that does not reach all the way to the lower leg or foot, though it may have done so earlier in the course of the condition.

Often there is not a specific traumatic event or motion associated with the onset of sciatica. Standing, sitting, heavy lifting, sneezing, or having a bowel movement may aggravate the pain. Lying down is usually the most comfortable position. Occasionally, paresthesia, weakness and diminished bowel or bladder function, will accompany sciatica, but these symptoms are rare.

Unless Noted Otherwise, All Articles and Graphics Copyright © 2007, Medtronic Sofamor Danek, All Rights Reserved.
Please review our Privacy Policy, Editorial Policy, Terms Of Use, Credits or Contact Us for more information. RSS Feed

We comply with the
HONcode standard for
trustworthy health
information: verify here.

The materials on this Web site are for your general educational information only. Information you read on this Web site cannot replace the relationship that you have with your health care professional. We do not practice medicine or provide medical services or advice as a part of this Web site. You should always talk to your health care professional for diagnosis and treatment.