The textbook "Hypermobility of Joints" in its fourth edition provides a comprehensive overview of joint hyperlaxity and follows the proven format of its predecessors. It addresses the latest research findings and developments in biochemistry and offers practical advice on clinical features and their management. The authors, including Peter H. Beighton, Howard Bird, and Rodney Grahame, have incorporated illustrative case studies as well as an analysis of hypermobility in the performing arts and sports. Additionally, an overview of hereditary hypermobility syndromes is provided. This book is a valuable reference work for various specialties, particularly for rheumatologists, orthopedic surgeons, and medical geneticists.