Longitudinal LigamentsOssification of Posterior Longitudinal LigamentLigamentsOssification, HeterotopicCervical VertebraeLigamentum FlavumHyperostosis, Diffuse Idiopathic SkeletalSpinal Cord CompressionLigaments, ArticularDecompression, SurgicalLaminectomySpinal Cord DiseasesDens in DenteSpondylosisSpinal StenosisSpinal DiseasesSpinal OsteophytosisIntervertebral DiscPeriodontal LigamentSpinal FusionSpineQuadriplegiaThoracic VertebraePosterior Cruciate LigamentIntervertebral Disc DisplacementLumbar VertebraeRadiculopathyTomography, X-Ray ComputedPatellar LigamentAnterior Cruciate Ligament ReconstructionMagnetic Resonance ImagingBroad Ligament