Ossification of the posterior longitudinal ligament (OPLL) with compressive myelopathy
Diagnosis certain
Presentation
Quadriparesis.
Patient Data
Age: 45 years
Gender: Male
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Extensive ossification of the posterior longitudinal ligament, extending from C2 down up to C4 and with a lesser degree from C5 to T1 level. Marked narrowing of the spinal canal between C2 and C4, measuring 6 mm in sagittal diameter at C4. Also, there is ossification of the anterior longitudinal ligament as well as the alar and transverse ligaments.
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In addition to the ossification of the previously described ligaments, there is compression of the spinal cord mainly at the C3-C4 level with increased STIR and T2 cord signal in keeping with compressive myelopathy.
Case Discussion
CT and MRI features of ossification of the posterior longitudinal ligament with compressive myelopathy.