From ankylosis to pencil-in-cup deformity in psoriatic arthritis: a case report. Clinical and experimental rheumatology [Clin Exp Rheumatol] Journal article

A 56-year-old woman with psoriatic arthritis is presented whose initially ankylosed digit was later found to develop pencil-in-cup change. The patient was treated over that period with etanercept and had no signs of active arthritis. The possible mechanisms for these changes are discussed.

Clinical and experimental rheumatology [Clin Exp Rheumatol]