Arthritis mutilans

Last revised by Henry Knipe on 11 Sep 2023

Arthritis mutilans is a severe form of many inflammatory arthropathies, most commonly psoriatic (PsA) and rheumatoid arthritis (RhA), characterized by "telescoping" of the fingers where osteolysis leads to articular collapse allowing loose skin and the ability of these digits to have the motion of a telescope. 


Arthritis mutilans more commonly occurs in the hands than the feet 2


​Aside from PsA and RhA, arthritis mutilans is also associated with 1-4:

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