Spinal Cord DiseasesSpinal Cord CompressionSpinal OsteophytosisCervical VertebraeParaparesis, Tropical SpasticSpondylosisLaminectomyDecompression, SurgicalOssification of Posterior Longitudinal LigamentMyelographyLigamentum FlavumHTLV-I InfectionsHuman T-lymphotropic virus 1MyelitisSpinal CanalRadiculopathySpinal FusionMyelitis, TransverseSpinal CordMagnetic Resonance ImagingOssification, HeterotopicDiskectomySpinal StenosisDelayed DiagnosisCervical AtlasHTLV-I AntibodiesRetrospective StudiesPrenatal DiagnosisEarly DiagnosisAtlanto-Axial JointTreatment OutcomeLongitudinal LigamentsDura MaterThoracic VertebraeSensitivity and SpecificityGene Products, taxParaparesis, SpasticTomography, X-Ray ComputedParaplegiaAxisNeurologic ExaminationIntervertebral Disc DisplacementQuadriplegiaEncephalitis, Varicella ZosterOccipital BoneOdontoid ProcessDiagnosisNeurosurgical ProceduresProvirusesFollow-Up StudiesParaparesisKyphosisEpidural SpaceSpinal Cord NeoplasmsReflex, AbnormalHyperostosis, Diffuse Idiopathic SkeletalArteriovenous FistulaElectrodiagnosisHyperostosisExophthalmosLeukemia-Lymphoma, Adult T-CellLigamentsSkin Diseases, ViralSpinal Cord Vascular DiseasesProspective StudiesHTLV-II InfectionsSynovial CystLordosisCarrier StateNeckEvoked Potentials, SomatosensorySpinal NeoplasmsNervous System DiseasesSpinal DiseasesPostoperative ComplicationsSyringomyeliaDiagnostic ErrorsDislocationsDog DiseasesSpinal Nerve RootsCentral Nervous System Vascular MalformationsFatal OutcomeThoracic DiseasesGanglion CystsHerniaOrthopedic ProceduresPredictive Value of TestsPolymerase Chain ReactionGenes, pXEpidural NeoplasmsSpondylitisSeverity of Illness IndexTime FactorsPrognosisCerebrospinal FluidInfarctionSiderosisRecovery of FunctionReproducibility of ResultsOrthopedics