オランダのユトリヒト大学の脳外科医Verbiest HA radicularsyndrome from developmental narrowing of the lumbar vertebral canal (J Bone Joint Surg, 1954)7例の手術例Thicked laminae中心部脊柱管狭窄の概念を確立狭窄症の“父”
病理形態学的分類Ⅰ. Congenital 先天性Ⅱ. Developmental 発育性(老化現象) A. Through inborn errors of skeletal bone growth B. Idiopathic developmental stenosis 1. In the presence of bony hypertrophy of structures of vertebral arch 2. In the absence of bony hypertrophy of structures of vertebral arch (rare)(Verbiest H The Lumbar Spine 1990)
mm Hg160140120立位(直立位):平均67 mmHg 10080臥位の約4倍604020立位(後屈位):平均116mmHg 0座位仰臥位立位立位立位腹臥位腹臥位(後屈)(後屈)(直立)(前屈)臥位の約6倍姿勢による狭窄部硬膜圧の変化Takahashi K et al: Epidural pressure measurements, relationship between epidural pressure Andposture in patients with lumbar spinal stenosis. Spine 20: 650, 1995