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 ...
K.W. is an active 92-year-old, right-handed, Caucasian female with nodule and contracture formation of the right palmar fascia with extension to the metacarpophalangeal (MCP) and proximal ...