Figure 8 - uploaded by Robert J Trager
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Sciatic nerve originating from the lumbosacral plexus. The posterior femoral cutaneous nerve and sciatic nerve are highlighted whereas other nerves are hidden. Image modified from public domain images of sacrum from Gray's anatomy and sacral plexus from Ely, 1919.
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Key points
• Sciatica describes symptoms in the sciatic nerve distribution
• Sciatic pain has various patterns corresponding to its nerve roots, nerve trunk, sensory distribution, or referred pain into these distributions
• The broad definition of sciatica reflects the many disorders that cause it
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