PSOARATIC ARTHRITIS

Question 1

What are the 6 radiographic features of psoratic arthritis ?

Answer 1

1. Soft tissue swelling/dactylitis(caused by inflammation) .
2. Pencil in cup/ micky mouse deformity (looks like a point or ears)
3. periosteal reaction.(increase in density adjacent to the cortex).
4. Floating phalanx.
5. New bone formation giving a fluffy appearance.

Question 2

What joints are affected by Psoriatic arthritis ?

Answer 2

Distal interphalangeal joints of fingers and toes.

Question 3

What is not affected in psoriatic arthritis ?

Answer 3

The bone density. You will not see juxta articular osteopenia like you usually see in RA.

Question 4

What is Psoriatic arthritis identical to radiographically ?

Answer 4

REITER’S SYNDROME. However, hands are not commonly involved and Reiter’s syndrome is not common in females.

Question 5

Is the distributions of PSA symmetrical or asymmetrical ?

Answer 5

Symmetrical affecting small joints and similar distribution to RA.