... It is urgent to write and disseminate useful information, to better know and make known the ankylosing spondylitis, formerly called bamboo spine. This book is intended for the medical profession, patients, but also for the general population. We should all be able to recognize it in its earliest symptoms, in order to limit its evolution and preserve a better quality of life as long as possible. Knowing it, identifying it, is the first step. In a second step, we must also hope to treat it better. Science is advancing, but there is still a long way to go. For this, medical treatments must absolutely be standardized, in a spirit of unwavering fairness, particularly on the part of physiotherapists. In parallel, many other natural options also exist to improve symptoms, pain management, or simply the morale of patients. Naturopathy is therefore an excellent advice, and alternative therapies (nutrition, yoga, etc.) often improve the management of spondyloarthritis. I present here the essential.