Editing Claudication (section)

===Spinal or neurogenic===
{{main|Neurogenic claudication}}
Spinal or neurogenic claudication is not due to lack of blood supply, but rather it is caused by nerve root compression or [[stenosis]] of the spinal canal,<ref name=PMID19796387>{{cite journal |vauthors=Comer CM, Redmond AC, Bird HA, Conaghan PG |title=Assessment and management of neurogenic claudication associated with lumbar spinal stenosis in a UK primary care musculoskeletal service: a survey of current practice among physiotherapists |journal=BMC Musculoskelet Disord |volume=10|pages=121 |year=2009 |pmid=19796387 |pmc=2762954 |doi=10.1186/1471-2474-10-121 |doi-access=free }}</ref> usually from a degenerative spine, most often at the [[Lumbar vertebrae|"L4-L5" or "L5-S1" level]].  This may result from many factors, including bulging disc, [[Spinal disc herniation|herniated disc]] or fragments from previously herniated discs (post-operative), scar tissue from previous surgeries, [[osteophyte]]s (bone spurs that jut out from the edge of a vertebra into the foramen, the opening through which the nerve root passes).  In most cases neurogenic claudication is bilateral, i.e. symmetrical.{{citation needed|date=February 2021}}