PMC8571328_01
Sagittal (a) and axial T2-weighted MR images (b) at the level of the upper cervical cord demonstrate narrowing of the spinal canal due to massive ossification of the posterior longitudinal ligament (white arrows) with cord compression and myelopathy.
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F1
The cervical MRI and CT scans both showed C1-C2 central anterior compression due to OPLL [Figures 1 and 2].
CT reconstructions in the sagittal (a) and axial plane show that the ossification of the posterior ligament (white arrow) is most pronounced at the C1-C3 level with narrowing of the spinal canal.
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F2
The cervical MRI and CT scans both showed C1-C2 central anterior compression due to OPLL [Figures 1 and 2].
Sagittal CT (a) and T2-weighted MR images after laminectomy of C1 and partial laminectomy of C2 (*) demonstrate adequate decompression of the spinal cord at the craniocervical junction.
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F3
The postoperative MR performed 6 months later confirmed adequate cord decompression [Figure 3].