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目的探付退变性腰椎滑脱的病因和CT诊断价值。方法回顾性分折了50例退变性腰椎滑脱的CT表现、好发部位及其原因。结果滑椎下缘相邻间盘均显示有“假性间盘脱出”征,椎间盘及椎小关节退变,椎小关节半脱位,硬膜囊受压。结论椎间盘及椎小关节退变及韧带的松弛是本病的重要的诱因,CT不仅能诊断退变性腰椎滑脱症,还能显示硬膜囊和神经根的改变。
Objective To investigate the etiology and CT diagnosis of degenerative lumbar spondylolisthesis. Methods Retrospectively analyzed 50 cases of degenerative lumbar spondylolisthesis of CT, the incidence of the site and its causes. Results The adjacent discs on the lower edge of the vertebrae showed “pseudo-disc prolapse”, degeneration of intervertebral disc and vertebral facet joints, subluxation of the facet joints, and compression of the dural sac. Conclusion The degeneration of disc and vertebral facet joint and the relaxation of ligaments are important inducing factors of this disease. CT can not only degenerative spondylolisthesis, but also show the changes of dural sac and nerve root.