More rheumatologists are embracing musculoskeletal ultrasound (MSUS) to diagnose and manage rheumatic diseases. In response, the American College of Rheumatology (ACR) assembled a task force to investigate and determine best practices for use of MSUS in rheumatology practice. The resulting scenario-based recommendations, which aim to help clinicians understand when it is reasonable to integrate MSUS into their rheumatology practices, now appear online in Arthritis Care & Research.