This introductory video details how bedside medical ultrasound imaging of an arthritic hand allows for rapid and effective evaluation of patients with rheumatoid arthritis and osteoarthritis. It discusses the anatomy of the finger, probe placement, and scanning techniques. It also includes clinical images of the metacarpophalangeal (MCP) and proximal interphalangeal (PIP) joints. This video is of particular interest to rheumatologists and primary care clinicians. For more videos and information about ultrasound technology, go to www.sonosite.com.