The term for disc herniation with no attachment to the host disc is?

The term for disc herniation with no attachment to the host disc is?

• A. Subligamentous extrusion
• B. Extrusion
• C. Transligamentous extrusion
• D. Sequestration

Answer: (D)

Distinguishing disc herniation fragments by whether they stay attached to the parent disc. When the herniated piece is completely detached from the original disc, it’s called a sequestration. That lack of connection is what sets sequestration apart from other forms, where the fragment remains attached to the disc (even if it protrudes beyond the annulus or travels under or through the posterior longitudinal ligament). Sequestration matters clinically because free fragments can migrate within the canal and often require surgical removal if they cause symptoms.

Distinguishing disc herniation fragments by whether they stay attached to the parent disc. When the herniated piece is completely detached from the original disc, it’s called a sequestration. That lack of connection is what sets sequestration apart from other forms, where the fragment remains attached to the disc (even if it protrudes beyond the annulus or travels under or through the posterior longitudinal ligament). Sequestration matters clinically because free fragments can migrate within the canal and often require surgical removal if they cause symptoms.