Spinal Cord CompressionCervical VertebraeSpinal CordSpinal Cord InjuriesSpinal NeoplasmsSpinal Cord NeoplasmsLaminectomySpinal Cord DiseasesThoracic VertebraeMyelographyQuadriplegiaDecompression, SurgicalSpinal CanalEpidural NeoplasmsMagnetic Resonance ImagingSpinal OsteophytosisParaplegiaSpinal DiseasesHematopoiesis, ExtramedullaryEpidural SpaceScheuermann DiseaseHematoma, Epidural, SpinalParalysisSpinal InjuriesSpondylosisNeckPhrenic NerveRecovery of FunctionHyperostosisParaparesisMyelitisRheumatic NoduleForelimbOsteochondromaEpidural AbscessPyramidal TractsBalloon EmbolectomySyringomyeliaAnterior Horn CellsNeurosurgical ProceduresOdontoid ProcessArachnoid CystsMotor NeuronsBone NeoplasmsInfarctionCervical AtlasExostoses, Multiple HereditaryUmbilical CordDiphosphonatesArachnoidSpinal FusionTuberculosis, SpinalTomography, X-Ray ComputedContusionsTreatment OutcomeHemangiomaData CompressionSpinal Nerve RootsMedulla OblongataElectromyographyRespiratory ParalysisFractures, SpontaneousSpineNerve Compression SyndromesFatal OutcomeSpinal Cord StimulationSpinal Cord IschemiaDiaphragmNeurologic ExaminationRats, Sprague-DawleySpinal FracturesSpinal StenosisKlippel-Feil SyndromeRed NucleusTime FactorsMultiple SclerosisBrain StemNeck InjuriesDisease Models, Animal