ZEPHYR / SCIENCE PHOTO LIBRARY ZEPHYR / SCIENCE PHOTO LIBRARY
Spinal disc protrusion. Computed tomography (CT) scan of an axial section through the lumbosacral spine of a 55-year-old patient, centred on the intervertebral space between the L4-L5 vertebrae, showing narrowing of the spinal canal and erosion of the epidural fatty space associated with spinal disc protrusion. Disc protrusion is a condition that causes the outermost layers of the intervertebral disc to bulge when under pressure.
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