Post Operative Lumbar Spinal Canal Stenosis の治験

抄録

Of the twenty six patients with wide laminectomy for the lumbar canal stenosis in the past three years, we experienced five cases of post-operative lumbar canal stenosis. Among them, three cases were post-fusion stenosis and two cases were post-laminectomy stenosis. Except one, all cases have elapsed more than six years from the first operation.
Operation findings
Post-Fusion Stenosis:
Instability of the disc just above fusion mass.
Thickening and infolding of the ligamentum flavum.
Hypertrophy and projection of the articular processes.
Laminar hypertrophy.
Post-Laminectomy Stenosis:
Haevy scar tissue at the site of love's laminectomy.
Ligamentous thickening and hypertrophy of the lamina.