Spinal Cord CompressionSpinal Cord NeoplasmsSpinal Cord InjuriesSpinal CordSpinal NeoplasmsParaplegiaThoracic VertebraeLaminectomyQuadriplegiaCervical VertebraeSpinal Cord DiseasesBones of Lower ExtremityAcute DiseaseEpidural NeoplasmsEpidural SpaceSpinal DiseasesThrombophlebitisDecompression, SurgicalMyelographyRecovery of FunctionHematopoiesis, ExtramedullarySpinal CanalScheuermann DiseaseMethylprednisoloneHematoma, Epidural, SpinalMagnetic Resonance ImagingParaparesisHyperostosisTime FactorsSpinal Cord IschemiaRheumatic NoduleOsteochondromaCordotomyBalloon Embolectomy