AS (short for ‘ankylosing spondylitis’) is a severe form of spondyloarthritis (that affects the back, hips, and often other parts of the body. Specialist doctors have developed recommendations for how to care for AS patients, which include how to use medications, physiotherapy, and other treatments. However, these recommendations can be hard to understand – in fact, it is possible that different doctors will interpret the recommendations in different ways. For researchers who want to study the effect of following recommended care, it is important to understand exactly what is recommended and how to tell if AS care is being given as directed. To help understand this, researchers brought together specialist doctors to talk about what the recommendations mean to them. The researchers then did an online survey to ask specialists what it means to follow AS care recommendations.