emphasizes the fundamental, basic biomechanical principles applied to spinal implant development. In addition, this book offers valuable pearls of wisdom from developers and clinical users. Motion Preservation Individual chapters dedicated to specific spinal implants that are being used in clinical practice and investigative studies, as well as those on the horizon, are included. Informative chapters on lumbar discs are written by the developers of the products and/or the lead clinical investigators. These individuals are experts on the nuances and technical aspects of the devices featured. Through the book’s balanced approached to the pros, cons, and limitations of each technology, readers will find this an essential resource for determining which device is best suited for each individual patient. A Unique Collaboration A rare meeting of the minds provides the great allure of this book and gives it an individuality all its own. One of the book’s strongest attributes is its collaborative nature. The editors, researchers, and engineers from industry and academia are teamed with contributing spine surgeons and medical professionals. Nonfusion Techniques for the Spine: Motion Preservation and Balance effectively captures this unique collaboration and results in a book with clinical and scientific viewpoints. Biomechanics and Clinical Applications Weaving together biomechanics and clinical applications, the book’s two major divisions, is an important feature of the overall book but also of each individual chapter. The clinical needs and patient emphasis will guide a scientific engineer through the development process needed for new implants.