Disc Bulge: Definition

Disc Herniation or Bulge

A disc bulge is caused by weakening of the outside layer of the spinal disc (called the annulus), causing the disc to flatten and balloon into the spinal canal. A disc bulge is less severe than a disc protrusion or a disc herniation where the outer layer breaks.

Also known as: disc herniation, disc protrusion

Stages of Disc Herniation