What is Disc Extrusion?Disc extrusion is a term used to describe the shape of a particular kind of herniated spinal disc. The material in discs with this shape has typically spread a significant distance from the main disc body, and can easily intrude upon the nerves associated with your spinal column, or upon your spinal cord.
Spinal Disc Anatomy and Function
Your spinal discs are cushioning, pillow-like structures situated between the bones in your spinal column (vertebrae). Each disc has a soft core, called the nucleus, surrounded by a resilient outer coating, called the annulus, which holds the nucleus in position and gives the disc its normal shape. Because of their position in your spine, your discs serve basic functions that include maintenance of the proper height and spacing between adjoining vertebrae, prevention of spinal damage related to shock and normal daily stress, and promotion of normal back and neck mobility and flexibility.