Rheumatoid Arthritis: Ultrasound Assessment of Synovitis and Erosions

Rheumatoid arthritis is a chronic, frequently progressive autoimmune disease that can at times be difficult to diagnosis radiographically at its earlier stages. Early treatment with disease-modifying antirheumatic drugs can decrease the extent of joint damage; therefore early, accurate diagnosis is essential. Ultrasound can directly evaluate the synovium, and can assess for erosive changes that may be radiographically occult. This article reviews the role of ultrasound in evaluating synovitis and bone erosions of the hands and feet in the diagnosis and management of these patients.