Psoriasis X-ray
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American Roentgen Ray Society Images of Psoriasis X-ray |
Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1] Associate Editor(s)-in-Chief: Syed Hassan A. Kazmi BSc, MD [2]
Overview
X-Ray
Key X-ray findings in psoriatic arthriris include:
- Enthesitis and marginal bone erosions
- "Pencil-in-cup" deformities
- Interphalangeal ankylosis may be present.
- Bone proliferation results in an irregular, “fuzzy” appearance to the bone around the affected joint
- Periostitis: may appear as a periosteal layer of new bone, or as irregular thickening of the cortex itself
- Dactylitis: which can present as a “sausage digit” which refers to soft tissue swelling of a whole digit
- Arthritis mutilans: a severe form of either PsA or rheumatoid arthritis caused by marked bony resorption and the consequent collapse of soft tissue; when this affects the hands, it can cause a phenomenon sometimes referred to as "telescoping fingers"
- Ivory phalanx: classically involving the distal phalanx of the great toe
- Sacroiliitis: often asymmetrical
- Spondylitis: asymmetric paravertebral ossifications and relative sparing of the facet joints