Spinal Cord DiseasesSpinal Cord InjuriesPeripheral Nerve InjuriesSpinal CordPeripheral NervesSciatic NerveNerve RegenerationSpinal NervesSciatic NeuropathyNeuralgiaParaplegiaPeripheral Nervous System DiseasesNerve CrushQuadriplegiaRats, Sprague-DawleyGanglia, SpinalHyperalgesiaRecovery of FunctionSpinal Cord CompressionInjections, SpinalWounds and InjuriesAxonsAxotomyFacial Nerve InjuriesPosterior Horn CellsSpinal Cord NeoplasmsSchwann CellsSpinal Nerve RootsMotor NeuronsTrauma, Nervous SystemDisease Models, AnimalPainSpinal Cord IschemiaHypoglossal Nerve InjuriesWallerian DegenerationNeuromaCervical VertebraeTibial NerveNeurons, Afferent