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Effects of acute, graded compression on spinal nerve root function and structure. An experimental study of the pig
B L Rydevik1, R A Pedowitz, A R Hargens
1Department of Orthopaedics, University of Göteborg, Sweden.
Spine
|May 1, 1991
Abstract:
A well-controlled experimental model for analysis of compression-induced functional changes of the porcine cauda equina is presented. The model allows for electrophysiologic investigation of a variety of neurophysiologic changes induced by nerve root deformation. At an acute pressure threshold of 50-75 mm Hg, changes in both afferent and efferent conduction are induced. With higher compression pressure, a differential recovery in afferent and efferent conduction is seen.