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Plain lateral radiograph showing marked kyphosis of the thoracic spine.
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Plain radiograph showed marked kyphosis of the thoracic spine (T1-T12 angle; 94 ) (Fig. 1).
Sagittal reconstruction images of computed tomography demonstrating fusion of the entire spine below C2: Cervical spine (A) and thoracolumbar spine (B).
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Computed tomography demonstrated ankylosis of the whole spine below the C2 vertebra with extensive ossification of the paraspinal ligaments (Fig. 2A, B).
T2-weighted magnetic resonance imagine revealing spinal cord compression at the C1 level by the ossified tissues.
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Magnetic resonance imaging (MRI) revealed spinal cord compression at the levels of both the occipital bone and C1 (Fig. 3).