Pencil-in-cup deformity

Changed by Henry Knipe, 25 May 2020

Updates to Article Attributes

Body was changed:

Pencil-in-cup deformity is the description given to one of the appearances on plain radiographs inclassically associated with psoriatic arthritis.

Radiographic features

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

Differential diagnosis

Although classically described with psoriatic arthritis, this appearance can also be seen in systemic sclerosisrheumatoid arthritis or reactive arthritis.

  • -<p><strong>Pencil-in-</strong><strong>cup deformity</strong> is the description given to one of the appearances on plain radiographs in <a href="/articles/psoriatic-arthritis">psoriatic arthritis</a>.</p><h4>Radiographic features</h4><p>The appearance results from periarticular erosions and bone resorption giving the appearance of a pencil in a cup.</p><h4>Differential diagnosis</h4><p>Although classically described with psoriatic arthritis, this appearance can also be seen in <a title="Systemic sclerosis" href="/articles/scleroderma">systemic sclerosis</a>, <a title="Rheumatoid arthritis" href="/articles/rheumatoid-arthritis">rheumatoid arthritis</a> or <a title="Reactive arthritis" href="/articles/reactive-arthritis">reactive arthritis</a>.</p>
  • +<p><strong>Pencil-in-</strong><strong>cup deformity</strong> is the description given to one of the appearances on plain radiographs classically associated with <a href="/articles/psoriatic-arthritis">psoriatic arthritis</a>.</p><h4>Radiographic features</h4><p>The appearance results from periarticular erosions and bone resorption giving the appearance of a pencil in a cup.</p><h4>Differential diagnosis</h4><p>Although classically described with psoriatic arthritis, this appearance can also be seen in <a href="/articles/scleroderma">systemic sclerosis</a>, <a href="/articles/rheumatoid-arthritis">rheumatoid arthritis</a> or <a href="/articles/reactive-arthritis">reactive arthritis</a>.</p>
Images Changes:

Image 4 X-ray (Lateral) ( create )

ADVERTISEMENT: Supporters see fewer/no ads

Updating… Please wait.

 Unable to process the form. Check for errors and try again.

 Thank you for updating your details.