title: Atlantoaxial instability in Down syndrome.
authors.forename: Y T
authors.initials: YT
authors.lastname: Konttinen
authors.forename: S
authors.initials: S
authors.lastname: Santavirta
mesh_terms: D001269:Atlanto-Occipital Joint; D004314:Down Syndrome / Q000150:complications*; D006801:Humans; D004204:Joint Dislocations / Q000209:etiology*; D007593:Joint Instability / Q000150:complications*