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What are the X-ray findings associated with Psoriatic Arthritis?

a) Pencil-in-cup deformity
b) Swan neck deformity
c) Boutonniere deformity
d) Heberden's nodes

Answer :

Final answer:

X-ray findings associated with Psoriatic Arthritis include pencil-in-cup deformity, swan neck deformity, boutonniere deformity, but not Heberden's nodes.

Explanation:

The X-ray findings associated with Psoriatic Arthritis include:

  1. Pencil-in-cup deformity: This is a characteristic finding in Psoriatic Arthritis where the bones in the joint appear to have eroded and narrow at the ends, creating a pencil-like appearance.
  2. Swan neck deformity: This deformity is not commonly seen in Psoriatic Arthritis, but rather in conditions like Rheumatoid Arthritis. It refers to the hyperextension of the proximal interphalangeal joint (PIP) with flexion at the distal interphalangeal joint (DIP), resembling the neck of a swan.
  3. Boutonniere deformity: This deformity is also more commonly associated with Rheumatoid Arthritis than Psoriatic Arthritis. It is characterized by flexion of the PIP joint and hyperextension of the DIP joint.
  4. Heberden's nodes: These are bony growths that develop at the DIP joints in conditions like Osteoarthritis, not Psoriatic Arthritis.

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