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Imaging in psoriatic arthritis 

Imaging in psoriatic arthritis
Imaging in psoriatic arthritis

Dafna D. Gladman

, Cheryl F. Rosen

, and Vinod Chandran

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date: 27 January 2021

Imaging is important to determine the degree and severity of joint and entheseal inflammation

Radiographic evidence of peripheral joint damage includes erosions, joint space narrowing, juxta-articular ‘fluffy’ periostitis, severe osteolysis, pencil-in-cup change, ankylosis and subluxation.

Axial radiographs often reveal sacroiliitis, syndesmophytes (marginal or paramarginal), facet joint fusion, discitis, and occasionally atlanto-axial subluxation

Ultrasonography may be used to detect inflammatory and destructive changes in joints, tendons, and entheses, especially at point of care

Magnetic resonance imaging is especially useful to demonstrate early peripheral joint damage as well as axial inflammation

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