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. 2017 Apr 22;18:170. doi: 10.1186/s12891-017-1525-1

Fig. 3.

Fig. 3

CTscan of pelvis. A CT scan of the pelvis of the patient reveals that the fusion of the SI joint is superior-posteriorly and the synovial part of the joint is patent. This observation suggests that involvement of SI joint can be seen without any pagetoid changes on that side