Prevalence of feet and ankle arthritis and their impact on clinical indices in patients with rheumatoid arthritis: A cross-sectional study

We aimed to evaluate the prevalence of foot and/or ankle arthritis (FAA) and its impact on clinical indices in patients with rheumatoid arthritis (RA). Methods: This cross-sectional study used data from the Korean College of Rheumatology Biologics & Targeted therapy registry to observe clinical outcomes of patients undergoing biologics therapy and conventional therapy.