• Orthopedics · Apr 1992

    MRI classification of lumbar herniated intervertebral disc.

    • K Y Kim, Y T Kim, C S Lee, and M J Shin.
    • Department of Orthopedic Surgery, Asan Medical Center, University of Ulsan, Medical College, Seoul, Korea.
    • Orthopedics. 1992 Apr 1; 15 (4): 493-7.

    AbstractA consecutive series of 28 patients with lumbar herniated intervertebral disc (HIVD) who exhibited positive magnetic resonance imaging (MRI) findings was analyzed and compared with operative findings to define the type of disc herniation. This prospective study showed that the overall accuracy of MRI in predicting the types of HIVD was 80.6%. Proton density image was the most helpful in differentiating protruded discs from extruded ones. Disruption of "posterior longitudinal ligament line," defined on T2-weighted sagittal image, was reliable in differentiating a transligamentous disc from subligamentous one. Sequestered disc could be more accurately diagnosed with Gadolinium-DTPA enhancement, which showed anterior rim enhancement of the sequestered portion on T1-weighted axial image.

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