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The importance of posterior epidural fat pad in lumbar central canal stenosis
R J Herzog1, J A Kaiser, J A Saal
1San Francisco Neuro Skeletal Imaging Center, Daly City, California.
Abstract:
Ninety-three patients with lumbar central canal stenosis were prospectively evaluated to determine whether the posterior epidural fat was an important component in the pathogenesis of thecal sac compression. Results of this study indicated that, in patients with acquired stenosis secondary to facet arthrosis, posterior compression of the thecal sac by epidural fat was identified. This finding was not observed in patients with stenosis secondary to anterior column pathology or in patients with developmentally large facets.
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