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Case 10 A 71-year-old female with cervical myelopathy. A lateral radiograph in the neutral position shows enlargement of the atlanto-dental interval (a), however, on dynamic cervical radiograph, we could not find the reduction in the AAJ even in extension position, although hypermobility was seen in the AOJ (b, c). The CT image shows ankylosis of the AAJ on both side (d, e). An MR image shows multisegmental canal stenosis in the subaxial region (f)
