Basilar artery insufficiency due to atlanto-occipital instability.
D000328:Adult; D001488:Basilar Artery / Q000000981:diagnostic imaging; D002561:Cerebrovascular Disorders / Q000209:etiology* / Q000601:surgery; D001270:Cervical Atlas; D002574:Cervical Vertebrae; D005260:Female; D006801:Humans; D009777:Occipital Bone; D011182:Postoperative Care; D011859:Radiography; D013124:Spinal Injuries / Q000150:complications; D014711:Vertebral Artery; D014911:Whiplash Injuries / Q000150:complications*