One day, Kathy, a 58-year-old accountant, found herself staring at her hands. The second joint (PIP or proximal interphalangeal joint) on her right index and four first joints (DIP or distal ...

Mucous cysts are pseudocysts (cystic structures lacking a true lining) that usually appear on the middle or index finger of the dominant hand; toe involvement is uncommon. Although most mucous cysts ...

Two distinguishing features of long-standing RA are “swan neck” deformities and boutonniere deformities of the fingers (Figure 1). 3 Swan neck deformities develop with hyperextension of the PIP joint ...