Pelvic girdle pain during pregnancy is a common complaint for women all over the world. Pregnancy related Pelvic Girdle Pain causes pain, instability and limitation of mobility and causes considerable disabilities in daily activities. It can be attributed to a great number of different origins although, often, the true cause cannot be precisely defined. The goal of this book is to shed some light on this complex subject and provide a useful introduction to the topic of pelvic girdle pain.