title: Ossification of the posterior longitudinal ligament--a roentgenologic and clinical investigation.
mesh_terms: D000328:Adult; D000368:Aged; D002574:Cervical Vertebrae; D006801:Humans; D008023:Ligaments, Articular / Q000000981:diagnostic imaging*; D008159:Lumbar Vertebrae; D008875:Middle Aged; D009192:Myelography; D009999:Ossification, Heterotopic / Q000000981:diagnostic imaging*; D013131:Spine / Q000000981:diagnostic imaging*; D013904:Thoracic Vertebrae; D014056:Tomography, X-Ray