Sciatica: Difference between revisions
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imported>Robert Badgett (New page: Sciatica is defined as "A condition characterized by pain radiating from the back into the buttock and posterior/lateral aspects of the leg. sciatica may be a manifestation of sciatic neur...) |
imported>Robert Badgett |
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==Cause/etiology== | ==Cause/etiology== | ||
Sciatica may be caused by lumbosacral root compression from a [[herniated disk]], [[piriformis syndrome]]<ref name="pmid17030664">{{cite journal |author=Lewis AM, Layzer R, Engstrom JW, Barbaro NM, Chin CT |title=Magnetic resonance neurography in extraspinal sciatica |journal=Arch. Neurol. |volume=63 |issue=10 |pages=1469–72 |year=2006 |pmid=17030664 |doi=10.1001/archneur.63.10.1469 |issn=}}</ref><ref name="pmid15739520">{{cite journal |author=Filler AG, Haynes J, Jordan SE, ''et al'' |title=Sciatica of nondisc origin and piriformis syndrome: diagnosis by magnetic resonance neurography and interventional magnetic resonance imaging with outcome study of resulting treatment |journal=Journal of neurosurgery. Spine |volume=2 |issue=2 |pages=99–115 |year=2005 |pmid=15739520 |doi= |issn=}}</ref>, or other less common causes<ref name="pmid15739520"/>. In the piriformis syndrome, MRI scan may show compression of the sciatic nerve at the "sciatic notch, at or just inferior to the level of the piriformis muscle."<ref name="pmid17030664"/> | Sciatica may be caused by lumbosacral root compression from a [[herniated disk]], [[piriformis syndrome]]<ref name="pmid17030664">{{cite journal |author=Lewis AM, Layzer R, Engstrom JW, Barbaro NM, Chin CT |title=Magnetic resonance neurography in extraspinal sciatica |journal=Arch. Neurol. |volume=63 |issue=10 |pages=1469–72 |year=2006 |pmid=17030664 |doi=10.1001/archneur.63.10.1469 |issn=}}</ref><ref name="pmid15739520">{{cite journal |author=Filler AG, Haynes J, Jordan SE, ''et al'' |title=Sciatica of nondisc origin and piriformis syndrome: diagnosis by magnetic resonance neurography and interventional magnetic resonance imaging with outcome study of resulting treatment |journal=Journal of neurosurgery. Spine |volume=2 |issue=2 |pages=99–115 |year=2005 |pmid=15739520 |doi= |issn=}}</ref>, or other less common causes<ref name="pmid15739520"/>. 95% of patients with a [[herniated disk]] will have sciatic.<ref name="pmid1386391">{{cite journal |author=Deyo RA, Rainville J, Kent DL |title=What can the history and physical examination tell us about low back pain? |journal=JAMA |volume=268 |issue=6 |pages=760–5 |year=1992 |pmid=1386391 |doi= |issn=}}</ref>In the piriformis syndrome, MRI scan may show compression of the sciatic nerve at the "sciatic notch, at or just inferior to the level of the piriformis muscle."<ref name="pmid17030664"/> | ||
The [[straight leg raise]] test may help distinguish the [[herniated disk]] and [[piriformis syndrome]]; however, the value of the [[straight leg raise]] in this role has not been studied. | The [[straight leg raise]] test may help distinguish the [[herniated disk]] and [[piriformis syndrome]]; however, the value of the [[straight leg raise]] in this role has not been studied. | ||
Revision as of 13:48, 13 November 2007
Sciatica is defined as "A condition characterized by pain radiating from the back into the buttock and posterior/lateral aspects of the leg. sciatica may be a manifestation of sciatic neuropathy; radiculopathy (involving the spinal nerve roots; L4, L5, S1, or S2, often associated with intervertebral disk displacement); or lesions of the cauda equina.[1]
Cause/etiology
Sciatica may be caused by lumbosacral root compression from a herniated disk, piriformis syndrome[2][3], or other less common causes[3]. 95% of patients with a herniated disk will have sciatic.[4]In the piriformis syndrome, MRI scan may show compression of the sciatic nerve at the "sciatic notch, at or just inferior to the level of the piriformis muscle."[2]
The straight leg raise test may help distinguish the herniated disk and piriformis syndrome; however, the value of the straight leg raise in this role has not been studied.
References
- ↑ National Library of Medicine. Sciatica. Retrieved on 2007-11-13.
- ↑ 2.0 2.1 Lewis AM, Layzer R, Engstrom JW, Barbaro NM, Chin CT (2006). "Magnetic resonance neurography in extraspinal sciatica". Arch. Neurol. 63 (10): 1469–72. DOI:10.1001/archneur.63.10.1469. PMID 17030664. Research Blogging.
- ↑ 3.0 3.1 Filler AG, Haynes J, Jordan SE, et al (2005). "Sciatica of nondisc origin and piriformis syndrome: diagnosis by magnetic resonance neurography and interventional magnetic resonance imaging with outcome study of resulting treatment". Journal of neurosurgery. Spine 2 (2): 99–115. PMID 15739520. [e]
- ↑ Deyo RA, Rainville J, Kent DL (1992). "What can the history and physical examination tell us about low back pain?". JAMA 268 (6): 760–5. PMID 1386391. [e]