前方固定術後に頸椎硬膜外腔の石灰化をきたした頸椎症性脊髄症の1例

抄録

A 70-year-old woman complaining of gait disturbance was admitted to our hospital in May, 1976. She was diagnosed as cervical spondylotic myelopathy and had C5-6 interbody fusion. The symptoms were improved thereafter but were aggravated rapidly without any cause in July, 1979, and she was re-admitted to ours. X-ray examinations showed one pair of radiopaque nodules adjacent to C4 and C5 laminae in the spinal canal, and her myelogram showed a block at the same level. The nodules were removed surgically and were confirmed to be calcifications of the ligamenta flava.