椎弓峡部裂性和退变性腰椎滑脱的方向和程度存在差异。
我们发现脊椎动物的峡核是视觉中枢，并鉴定了它与顶盖之间的突触性质、递质和受体。
凡是有凹背滚筒、不塑性不横切滚筒、峡条可调滚筒、和弓型滚筒。
腰椎节段形态对峡部、小关节应力及小关节接触力影响的有限元分析
1·Isthmic spondylolisthesis is a lumbar spinal condition in which a fracture of the isthmus causes one vertebral body to slip forward on top of the vertebral body below it.
峡部裂性腰椎滑脱是由于峡部裂使一个椎体在另一个椎体上面滑动产生的一种病症。
2·Conclusion the variation of the disc height, facet-joint Angle and the lordosis Angle of the intervertebral disc had a manifest influence on the isthmic stress and facet contact force.
结论：椎间盘高度、腰椎小关节角、椎间盘前凸角等形态结构变化对腰椎节段有限元模型的峡部、小关节应力及小关节接触力有明显的影响。
3·Objective: to study the ct diagnostic value and clinical applications of ct scans parallel to isthmic in isthmic defect of lumbar spine.
目的：探讨平行于椎弓ct扫描对腰椎峡部裂的诊断价值及临床应用。
4·CONCLUSION. : Disc height and slip percentage had the largest effect on intervertebral foramen area and volume in this model of low-grade, low-dysplasia isthmic spondylolisthesis.
结论：在峡部腰椎滑动发育异常的模型中椎间盘高度和滑动比例能显著影响椎间盘面积和容积。
5·Methods Twenty-four lumbar spondylolysis patients with no vertebral surge were treated with single vertebra reduction fixation and isthmic debridement and bone grafting.
目的研究腰椎椎弓 峡 部不连下腰痛 峡 部植骨固定的手术方法及应用价值。