Research ArticleLumbar Spine

Signal Intensity of Lumbar Disc Herniations: Correlation With Age of Herniation for Extrusion, Protrusion, and Sequestration

MARKUS RAFAEL KONIECZNY, JEREMIA REINHARDT, MAX PROST, CHRISTOPH SCHLEICH and RÜDIGER KRAUSPE
International Journal of Spine Surgery February 2020, 14 (1) 102-107; DOI: https://doi.org/10.14444/7014

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Figures

  • Figure 1
    Figure 1

    T2 weighted MRI of the lumbar spine, sagittal view. Nucleus pulposus of intervertebral discs L3/4 (broad downward-facing arrow) and L4/5 (broad upward facing arrow). Extrusion of L4/5 (thin arrow). Anulus fibrosus of herniated intervertebral disc (right-faced arrow head). Cerebral spinal fluid (left-faced arrow head).

  • Figure 2
    Figure 2

    There are different types of LDH. The CTF of the North American Spine Society, American Society of Spine Radiology, and American Society of Neuroradiology established 3 different types of LDH3: Protrusion: “A herniated disc in which the greatest plane, in any direction, between the edges of the disc material beyond the disc space is less than the distance between the edges of the base, when measured in the same plane.” Extrusion: “A herniated disc in which, in at least one plane, any one distance between the edges of the disc material beyond the disc space is greater than the distance between the edges of the base in the same plane.” Sequestration: “Extruded discs in which all continuity with the disc of origin is lost.”

  • Figure 3
    Figure 3

    LDH of L5/S1 (extrusion). (A) Initial MRI 2 days after onset of pain. (B) Second MRI 4 weeks after onset of pain.

  • Figure 4
    Figure 4

    LDH of L2/3 (extrusion). (A) Twelve days after onset of pain. (B) Three months after onset of pain.

  • Figure 5
    Figure 5

    LDH of L4/5 (sequestration). One week after onset of pain.

  • Figure 6
    Figure 6

    LDH L5/S1 (extrusion). One year after onset of pain.

Tables

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Signal Intensity of Lumbar Disc Herniations: Correlation With Age of Herniation for Extrusion, Protrusion, and Sequestration
MARKUS RAFAEL KONIECZNY, JEREMIA REINHARDT, MAX PROST, CHRISTOPH SCHLEICH, RÜDIGER KRAUSPE
International Journal of Spine Surgery Feb 2020, 14 (1) 102-107; DOI: 10.14444/7014
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