Pencil-in-cup deformity

Dr Henry Knipe and Dr Ian Bickle et al.

Pencil-in-cup deformity is the description given to one of the appearances on plain radiograph in psoriatic arthritis.

The appearance results from periarticular erosions and bone resorption giving the appearance of a pencil in a cup.

Arthritides
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Article Information

rID: 33943
Section: Gamuts
Tags: stub, cases, refs
Synonyms or Alternate Spellings:

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