title: Atlanto-axial subluxation and trisomy-21: another perioperative complication.
mesh_terms: D001268:Atlanto-Axial Joint; D002648:Child; D004314:Down Syndrome / Q000150:complications*; D006801:Humans; D004204:Joint Dislocations / Q000209:etiology*; D007593:Joint Instability / Q000150:complications*; D008297:Male; D013514:Surgical Procedures, Operative