50.2 MB (1.0 MB compressed)
4060 x 4323 pixels
34.3 x 36.6 cm ⏐ 13.5 x 14.4 in (300dpi)
JOHN T. ALESI / SCIENCE PHOTO LIBRARY JOHN T. ALESI / SCIENCE PHOTO LIBRARY
Laminectomy surgery on slipped disc. Labelled artwork of an axial section through a slipped (herniated) disc in the lumbar (lower back) spine. Fibrocartilage discs (green) between the vertebrae form spinal joints that bend and flex. A slipped disc is where the disc's pulpy interior (nucleus pulposus, dark green) protrudes through the damaged outer ring (annulus fibrosus, light green). Laminectomy is a form of minimally invasive surgery where a small incision is made and the lamina (thin bony plate) of a vertebra is removed. This allows removal of protruding disc material, relieving the pressure on the spinal nerves (yellow). The back muscles (red) are also shown.
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