title: Acquired os odontoideum following acute ligament injury. Report of a case.
mesh_terms: D001368:Axis, Cervical Vertebra / Q000293:injuries* / Q000601:surgery; D001270:Cervical Atlas / Q000293:injuries* / Q000601:surgery; D005260:Female; D050723:Fractures, Bone / Q000209:etiology* / Q000601:surgery; D006801:Humans; D007223:Infant; D008022:Ligaments / Q000293:injuries*; D013123:Spinal Fusion; D014143:Traction