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Updated: Aug 13, 2026

Laminotomy for Lumbar Dorsal Root Ganglion Access and Injection in Swine
Published on: October 10, 2017
Innervation of the lumbar spine
Abstract:
Back pain, in spinal stenosis, can arise from many sources. Apart from nerve root involvement any of the structures considered above can be implicated. In degenerative conditions, where discogenic and posterior facet pain are present, excess activity tends to increase these symptoms. In addition there is evidence that impulses reaching the spinal nerve root through the sinu-vertebral nerve and possibly the posterior ramus may potentiate the irritability of that root. Whether such a mechanism contributes to the claudication of degenerative spinal stenosis is not known.
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