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. 2021 Oct 8;14:3135–3143. doi: 10.2147/JPR.S327351

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© 2021 Buchanan et al.

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Anterior-posterior radiograph of pelvis showing joint space narrowing, some subcortical sclerotic changes (yellow arrows), anterior sacral osteophyte formation, and joint surface irregularity which is seen in osteoarthritis of the SIJ.