Spinal bone protrusion, 3D CT scan

Spinal bone protrusion. Coloured 3D CT (computed tomography) scan of the lumbar-sacral part of the spine in a 28-year-old. This abnormal region has an extra bone growth called a syndesmophyte. At the sides of the lower five vertebrae (spine segments) are the vertebral processes, short protrusions where the back muscles attach to the spine. The syndesmophyte projects above the process seen at centre right, on the third lumbar vertebra. Syndesmophytes can occur in various diseases, such as ankylosing spondylitis, alkaptonuria and Crohn's disease. The upper three vertebrae's longer processes are ribs, and the pelvic bones are seen at bottom.. Stunning Photo Gifts From Science Photo Library

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