Material and Patients Studied.- 1 Historical Review.- 2 Anatomy and Physiology of the Craniovertebral Region.- 1 Osteology and Arthrology.- 2 Normal Radiographic Anatomy.- 3 Positive Arthrography of the Craniocervical Joints.- 4 Mechanics of the Joints.- 5 Radiological Studies of the Mobility of the Joints.- 3 Pathological Anatomy.- 4 Clinical Examination.- 1 Rheumatologic Examination.- 2 Neurologic Manifestations.- 5 Radiology in Rheumatoid Arthritis.- 1 Rarefaction of Bone.- 2 Articular Changes: Arthritis.- 3 Destructive Bone Lesions.- 4 Constructive Bone Lesions.- 5 Subluxations-Ligamentous Lesions.- 6 Other Radiological Investigations.- 6 Radiology in Other Chronic Inflammatory Rheumatic Diseases.- 1 Juvenile Chronic Polyarthritis.- 2 Ankylosing Spondylarthritis.- 3 Psoriatic Arthropathy.- 4 Miscellaneous.- 7 The Principles of Treatment in Lesions of the Cervico-Occipital Joint in Chronic Inflammatory Rheumatisms.- References.