黄韧带的退行性改变是腰椎椎管狭窄症的主要病理改变之一。作者报告了对腰椎椎管狭窄症患者黄韧带的组织学观察结果，发现弹力纤维明显减少和胶原纤维的增生是黄韧带退行性变的主要组织病理学特征。作者认为这一病理变化将使黄韧带的弹性受到破坏，而黄韧带的肥厚又将造成神经根管狭窄，使神经根受到卡压。 The degenerative changes of the ligamentum flavum is one of the main pathological changes of lumbar spinal stenosis. The authors report on the histological findings of the ligamentum flavum in patients with lumbar spinal stenosis and found that the reduction of elastic fibers and the proliferation of collagen fibers are the major histopathological features of the ligamentum flavum. The author believes that this pathological changes will destroy the elasticity of the ligamentum flavum, and the hypertrophy of the ligamentum flavum will in turn cause nerve root canal stenosis, nerve root compression.