患者男 ,5 8岁 ,腰腿痛伴间歇跛行一年余。曾在外院以“腰椎骨质退行性变”治疗 ,效果不佳 ,随入我院就诊。查体 :Ｌ4～ 5及Ｌ5～Ｓ1椎间隙左侧压痛 ( + ) ,双下肢直腿抬高试验 ( + )左小腿外侧及足背部感觉减退。且患者不能站立。行腰椎ＣＴ扫描 :Ｌ3～ 4及Ｌ4～ 5椎间隙均未 Male patient, 58 years old, low back pain with intermittent claudication more than a year. Once in the hospital to “lumbar degenerative bone degeneration” treatment, the effect is not good, with our hospital. Examination: L4 ~ 5 and L5 ~ S1 intervertebral space on the left tenderness (+), both legs lower limb straight leg raising test (+) left lateral leg and dorsum of foot feeling diminished. And the patient can not stand up. Lumbar CT scan: L3 ~ 4 and L4 ~ 5 intervertebral space were not