Osteoporosis affects 28 million people in the United States alone. The need for stable internal fixation of this type of bone is paramount.Metabolic bone diseases, such as osteoporosis, osteomalacia, hyperparathyroidism, and Paget’s disease, are usually associated with osteoporotic or soft skeleton, especially in the elderly patient. Orthopedic procedures in elderly patients are costly and with the increasing age of the population these costs will continue to escalate. Great challenges are often encountered when internal fixation is needed for fractures or osteotomies in osteoporotic bone. This book is designed to present both current clinical techniques and cutting-edge knowledge in pre-clinical research on the internal fixation of osteoporotic bone.