A good knowledge of descriptive, surgical and functional anatomy and biomechanics of the extensor tendons of the hand is fundamental for adequate surgical and rehabilitation management of their lesions. Extensor tendons are immediately localised under skin which makes them vulnerable to trauma. They are divided into extrinsic and intrinsic systems with complicated anatomy and biomechanics. This book examines different effective rehabilitation strategies to treat and repair tendons as well as discussing the anatomy and biomechanics of extensor tendons.