This book provides a thorough description of hexapod external fixators, from the theoretical basis to their practical application. Indications and practical use in current Orthopaedic practice are addressed in detail, offering the reader essential insights into the strengths and limitations of these devices. The main aspects covered, include primary (congenital) and secondary (acquired) deformities of the limbs: the etiology, pathomechanics, clinics, technical  tips and tricks  and suggested frame assemblies are presented. Each chapter addresses a specific Orthopaedic problem and includes representative clinical cases commented on by the authors. Illustrations and X-ray images support the discussion of the various themes treated in the textbook.  Special attention is also given to deformity morphology and the consequent geometry of correction, as well as economical aspects and the biological risks of radiation exposure.