PMC3148479_01
Lateral radiograph of lumbar spine showing marginal syndesmophytes (arrows).
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Bone fusions in the cervical spine, calcification of ligaments and syndesmophytes in the lumbar spine were observed through spine radiography (Figure 1), and Grade II (right)/Grade III (left) sacroiliitis was observed through sacroiliac joint radiography.
A- Hip radiograph showing bilateral ossification at the superior acetabular margin (arrows). B- Pelvis CT showing foci of ankylosis in the lower portion of the sacroiliac joint (arrows). C- Axial fat sat T2-weighted turbo spin-echo showing the lower portion of the sacroiliac joint with ossification of the iliosacral ligaments (large arrows). There are no significant findings in the upper portions of the sacroiliac joint (small arrows).
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Computed tomography (CT) revealed ankylosis foci at the sacroiliac joint (SI) and bilateral ossification of the iliolumbar ligament (Figure 2B). Similarly, magnetic resonance imaging demonstrated ossification of the iliosacral ligaments in the lower portions of the sacroiliac joints and no significant findings in the upper portions of the SI joint (Figure 2C).