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sciatic nerve
largest nerve in the body
Origin:
- sacral plexus (L4-S3)
Branches:
- common peroneal nerve
- posterior tibial nerve
Course:
- exits the pelvis via the greater sciatic foramen & passes inferiorly in the posterior compartment of the thigh, deep to the long head of the biceps femoris
- at the level of the knee (popliteal fossa), the sciatic nerve branches anteriorly to form the common peroneal nerve & posteriorly to form the posterior tibial nerve
Innervation:
1) hamstrings
2) all muscles below knee
Pathology: sciatica
Related
sciatica; lumbosacral radiculopathy; sciatic neuropathy
General
peripheral nerve
References
- B. Ourmazdi, M.D. Synopsis of Neurology & Examination,
B & B Books, Saratoga, CA, 1998
- Stedman's Medical Dictionary 27th ed, Williams &
Wilkins, Baltimore, 1999
3 Ropper AH, Zafonte RD
Sciatica.
N Engl J Med 2015; 372:1240-1248. March 26, 2015
PMID: 25806916
http://www.nejm.org/doi/full/10.1056/NEJMra1410151
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