Spinal Cord CompressionCervical VertebraeSpinal CordSpinal Cord InjuriesSpinal NeoplasmsSpinal Cord NeoplasmsLaminectomyIntervertebral Disc DisplacementThoracic VertebraeSpinal CanalSpinal Cord DiseasesDecompression, SurgicalMyelographyDiskectomyEpidural NeoplasmsQuadriplegiaMagnetic Resonance ImagingSpinal DiseasesParaplegiaHematopoiesis, ExtramedullaryLumbar VertebraeEpidural SpaceScheuermann DiseaseForaminotomyIntervertebral DiscHematoma, Epidural, SpinalRadiculopathySpinal Nerve RootsPhrenic NerveHyperostosisParaparesisRecovery of FunctionDiskectomy, PercutaneousRheumatic NoduleMyelitisForelimbOsteochondromaEpidural AbscessTreatment OutcomeBalloon EmbolectomyMicrosurgerySpondylosisAnterior Horn CellsOdontoid ProcessParalysisArachnoid CystsSpinal InjuriesBone NeoplasmsMotor NeuronsExostoses, Multiple HereditaryDiphosphonatesNeckArachnoidSpinal FusionTuberculosis, SpinalContusionsHemangiomaSciaticaData CompressionNeurosurgical ProceduresFractures, SpontaneousRespiratory ParalysisRetrospective StudiesTomography, X-Ray ComputedSpinal OsteophytosisSpineNerve Compression SyndromesFatal OutcomePyramidal TractsSpinal FracturesSpinal Cord StimulationSpinal StenosisNeurologic ExaminationKlippel-Feil SyndromeRats, Sprague-DawleyRed NucleusNeck InjuriesTime FactorsDura MaterSpinal Cord IschemiaUmbilical CordDisease Models, Animal