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KMID : 0359719950130041001
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Journal of the Korean Neurological Association
1995 Volume.13 No. 4 p.1001 ~ p.1006
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Two Cases of Thoracic Myelopathy Secondary to Ossification of the Ligamentum Flavum
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김성률
김재우/김상호/김갑진/최기종/김규홍
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Abstract
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Hypertrophied ligamentum flavum is not a common cause of myelopathy.
Only a minority of cases in the previous reports of myelopathy or radiculopathy secondary to thickening of the ligamentum flavum had calcification of the ligamentum. We report two cases of thoracic myelopathy caused by ossified ligamentum flavum.
One case was a twenty-five year old female who complained of weakness of lower limbs. The other was a fifty-three year old male who complained of tingling sensation on both lower extremities and weakness of right leg.
These two patients showed weakness of lower extremities associated with hypesthesia below the level of calcified ligamentum flavum, positive ankle clonus, extensor plantar resoonse, and hyperreflexia. Magnetic resonance imaging (MRI) showed
clearly
the
spinal cord compression at the second to fourth thoracic level by a low-intensity-signal lesion. Metrizamide myelography with computerized tomography showed precise preoperative diagnosis and anatomic localization of the lesion. About one month
after
laminectomy and removal of the ossified ligamenta flava, there was improvement of weakness, hypesthesia and ankle clonus.
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