There are three main types of bulging/herniated disc:
- Contained Disc Herniation: The disc is considered contained or bulging if the inner nucleus is not pushed through the outer wall of the annulus.
- Extruded Disc Herniation: The disc has ruptured and through the annulus wall entering the spinal canal. This type of extruded disc herniation is still intact with the spinal disc.
- Sequestered Disc Herniation: The disc has ruptured, broken away from the disc and migrated into the spinal canal.