JACOPIN / BSIP / SCIENCE PHOTO LIBRARY JACOPIN / BSIP / SCIENCE PHOTO LIBRARY
Illustration of a hernia at the intervertebral disc seen from above. This disc is composed of a fibrous ring on the outside, and a gelatinous core on the inside. When the core becomes fissured due to a micro-blow, the core's gelatine leaks into the rachidian canal and forms a ball (hernia), that compresses the nerve roots.
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