This book is written from the point of view of the radiologist. He describes the embryology of the vertebra and the disks, the various stresses and strains to which the back is subjected, and the physiology and static factors of the muscles of the back. He illustrates hemivertebra, butterfly vertebra, spina bifida, gorilla vertebrae and various anomalies and variations. Scheuermann's lesion, Calvé's lesion, and Cushing's lesion, arthritis of all types and infections, osteomyelitis and primary and secondary tumors are discussed. The bibliography, chiefly foreign, occupies 96 pages. This makes the book top heavy.