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