Spinal Cord CompressionSpinal Cord NeoplasmsSpinal NeoplasmsSpinal CordSpinal Cord InjuriesLaminectomyThoracic VertebraeEpidural NeoplasmsCervical VertebraeDecompression, SurgicalSpinal Cord DiseasesParaplegiaHematopoiesis, ExtramedullarySpinal DiseasesMyelographyScheuermann DiseaseEpidural SpaceSpinal CanalHematoma, Epidural, SpinalMagnetic Resonance ImagingHyperostosisParaparesisRheumatic NoduleOsteochondromaBalloon EmbolectomyOdontoid ProcessBone NeoplasmsEpidural AbscessExostoses, Multiple HereditaryQuadriplegiaDiphosphonatesArachnoid CystsArachnoidTuberculosis, SpinalHemangiomaData CompressionSpinal FusionFractures, Spontaneous