胸腰椎移行部の黄色靱帯骨化症の1例—そのMagnetic resonance imagingとともに

A Case of Ossified Yellow Ligaments (Ossified Ligamenta Flava) in Thoraco-Lumbar Region and Magnetic Resonance Imaging

I．はじめに

　脊椎管狭窄により神経症状を呈する症例は，近年脳神経外科でも経験する機会が増えた．今回われわれは胸腰椎移行部の黄色靱帯骨化症（以後OYL）を経験したので，画像診断の重要性をMRIの有用性とともに示し，診断と治療について文献的に考察する．

A Case of ossified yellow ligaments in thoraco-lumbar region is reported.

A 47-year-old-male complained low back pain with suddenness in August, 1984. One month later, he noticed dysesthesia on his right lower extremity and gait disturbance. These symptoms progressed slowly. In June, 1985, he admitted to The Jikei University Hospital.

On neurological examinations, he was noticed anintermittent claudication, spastic paraparesis and stock-ing type sensory loss in his lower extremities.