Question

what is the named pattern of psoriatic arthritis when all three joint sof one digit are involved?
cocktail pattern
ray pattern
arthritis mutilans
opera glass hand

Explanation:

Psoriatic arthritis has different patterns. When all three joints of one digit are involved, it is called the "sausage - digit" or dactylitis, which is also related to the Ray pattern. The Ray pattern in psoriatic arthritis refers to involvement of all joints of a single digit giving it a sausage - like appearance due to inflammation.

Answer:

Ray pattern