"disc protrusion is distinguished from a disc extrusion in that the base of protruded disc material is wider than its 'dome'; furthermore, this protruded disc material must not extend above or below the disc level."
"disc sequestration is an extrusion where the disc material migrates and becomes separated from the rest of the herniation."
"Note: a number of definitions of what exactly constitutes a disc protrusion have been proposed/used over the years, and it is important to realise that these differ substantially from one another 1-4. At the time of writing (June 2020) the widely used terminology was proposed in 2014 by Fardon et al and represents a consensus of the North American Spine Society, the American Society of Spine Radiology, and the American Society of Neuroradiology 4."
"Note: a number of definitions of what exactly constitutes a disc protrusion have been proposed/used over the years, and it is important to realise that these differ substantially from one another 1-4. At the time of writing (June 2020) the widely used terminology was proposed in 2014 by Fardon et al and represents a consensus of the North American Spine Society, the American Society of Spine Radiology, and the American Society of Neuroradiology 4."
Expected headings
"Terminology"
"See also"
"disc protrusion is distinguished from a disc extrusion in that the base of protruded disc material is wider than its 'dome'; furthermore, this protruded disc material must not extend above or below the disc level."