Spinal nerve root compression. 1995

S R Garfin, and B Rydevik, and B Lind, and J Massie
Department of Orthopaedics, University of California, San Diego, USA.

The pathophysiology of sciatica is not completely understood, although our understanding of its causes is increasing. Mechanical alterations combined with inflammatory changes lead to pain. Compression alters nerve root conduction and compromises the nutritional support of spinal nerve roots (through intrinsic and extrinsic vascularity and cerebral spinal fluid percolation). Mechanical forces can lead to intraneural damage and functional changes in nerve roots. Chemical and metabolic effects can create an inflammatory response. Varying causes of inflammation coupled with varying degrees of compression can occur anywhere along the cauda equina or spinal nerve root, including the dorsal root ganglia, and contribute to the pain response and neurologic deficits associated with sciatica.

UI MeSH Term Description Entries
D007405 Intervertebral Disc Displacement An INTERVERTEBRAL DISC in which the NUCLEUS PULPOSUS has protruded through surrounding ANNULUS FIBROSUS. This occurs most frequently in the lower lumbar region. Disc Herniation,Disc Protrusion,Disc, Herniated,Disk Herniation,Disk Protrusion,Disk, Herniated,Intervertebral Disc Herniation,Intervertebral Disc Protrusion,Intervertebral Disk Displacement,Intervertebral Disk Herniation,Intervertebral Disk Protrusion,Prolapsed Disk,Protruded Disc,Protruded Disk,Slipped Disk,Disk Prolapse,Herniated Disc,Herniated Disk,Prolapsed Disc,Slipped Disc,Disc Displacement, Intervertebral,Disc Herniations,Disc Protrusion, Intervertebral,Disc Protrusions,Disc Protrusions, Intervertebral,Disc, Prolapsed,Disc, Protruded,Disc, Slipped,Discs, Protruded,Disk Displacement, Intervertebral,Disk Herniations,Disk Prolapses,Disk Protrusion, Intervertebral,Disk Protrusions,Disk, Prolapsed,Disk, Protruded,Disk, Slipped,Herniated Discs,Herniated Disks,Herniation, Disc,Herniation, Disk,Herniation, Intervertebral Disc,Herniation, Intervertebral Disk,Intervertebral Disc Displacements,Intervertebral Disc Herniations,Intervertebral Disc Protrusions,Intervertebral Disk Displacements,Intervertebral Disk Herniations,Intervertebral Disk Protrusions,Prolapse, Disk,Prolapsed Discs,Prolapsed Disks,Prolapses, Disk,Protruded Discs,Protruded Disks,Protrusion, Disc,Protrusion, Disk,Protrusion, Intervertebral Disc,Protrusion, Intervertebral Disk,Protrusions, Intervertebral Disk,Slipped Discs,Slipped Disks
D008159 Lumbar Vertebrae VERTEBRAE in the region of the lower BACK below the THORACIC VERTEBRAE and above the SACRAL VERTEBRAE. Vertebrae, Lumbar
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000818 Animals Unicellular or multicellular, heterotrophic organisms, that have sensation and the power of voluntary movement. Under the older five kingdom paradigm, Animalia was one of the kingdoms. Under the modern three domain model, Animalia represents one of the many groups in the domain EUKARYOTA. Animal,Metazoa,Animalia
D012585 Sciatica A condition characterized by pain radiating from the back into the buttock and posterior/lateral aspects of the leg. Sciatica may be a manifestation of SCIATIC NEUROPATHY; RADICULOPATHY (involving the SPINAL NERVE ROOTS; L4, L5, S1, or S2, often associated with INTERVERTEBRAL DISK DISPLACEMENT); or lesions of the CAUDA EQUINA. Neuralgia, Sciatic,Sciatic Neuralgia,Sciatica, Bilateral,Bilateral Sciatica,Bilateral Sciaticas,Neuralgias, Sciatic,Sciatic Neuralgias
D013126 Spinal Nerve Roots Paired bundles of NERVE FIBERS entering and leaving the SPINAL CORD at each segment. The dorsal and ventral nerve roots join to form the mixed segmental spinal nerves. The dorsal roots are generally afferent, formed by the central projections of the spinal (dorsal root) ganglia sensory cells, and the ventral roots are efferent, comprising the axons of spinal motor and PREGANGLIONIC AUTONOMIC FIBERS. Dorsal Roots,Spinal Roots,Ventral Roots,Dorsal Root,Nerve Root, Spinal,Nerve Roots, Spinal,Root, Dorsal,Root, Spinal,Root, Spinal Nerve,Root, Ventral,Roots, Dorsal,Roots, Spinal,Roots, Spinal Nerve,Roots, Ventral,Spinal Nerve Root,Spinal Root,Ventral Root
D013130 Spinal Stenosis Narrowing of the spinal canal. Spinal Stenoses,Stenoses, Spinal,Stenosis, Spinal

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