A focal disc prot...
Axial
A focal disc protrusion involves less than 90 degrees of the disc circumference, and has wider base than apex.
Modality: Annotated image (Axial)

Used in the following articles:

  • Disc herniation - “ Disc herniation refers to the displacement of intervertebral disc material beyond the normal confines of the disc but involving less than 25% of t...”
  • Disc extrusion - “ Disc extrusion is a type of intervertebral disc herniation and is distinguished from a disc protrusion in that it: in at least one plane, has a b...”

View full size version of Intervertebral disc disease nomenclature (annotated image)

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