计算每个椎间隙处的硬膜囊横断面积。
Thecal sac cross-sectional area was calculated at each disc space.
门网膜韧带硬膜囊把神根固硬膜侧壁。
硬膜外腔位于硬膜囊周围。
目的：实验拟探讨轴向负荷对腰椎硬膜囊的影响。
OBJECTIVE: To investigate the impact of axial load on lumbar dural sac.
使用神经牵引器轻柔的牵拉与保护硬膜囊与神经根。
The thecal sac and nerve root are then gently retracted and protected with a nerve retractor.
无骨性椎管狭窄，但是在下腰部和骶椎层面硬膜囊增宽。
No bony canal stenosis, but a widened dural sac at lower lumbar and sacral level.
硬膜囊是神经根周围的囊袋，包容脑脊液、脊髓及神经。
The dura is the sac around the nerve roots that contains cerebrospinal fluid and spinal cord and nerves.
结论：改进切口对预防或减轻硬膜囊前方粘连可能有一定价值。
Conclusions: The reformed incise method may be valuable to prevent or alleviate adhesion in front of dura sac.
结论硬膜囊上所受的压力同压缩比、压缩头直径以及颈椎姿势关系密切。
Conclusion the force induced on the dura relate strongly with the compression ratio, the diameter of CIP and the posture of the cervical spine.
目的：探讨腰椎退变性滑脱症的CT诊断依据和对硬膜囊、神经根的影响。
Purpose: To explore the bases of CT diagnosis for lumbar degenerative spondylolisthesis and the changes of dural sacs and nerve roots.
结论：CT不仅能诊断腰椎退变性滑脱症，而且还能显示硬膜囊和神经根的改变。
Conclusion: CT can not only diagnose lumbar degenerative spondylolisthesis but also show the changes of dural sacs and nerve roots.
而CT的优势在于能清楚地表现椎间盘、硬膜囊、关节突和椎管内外结构的变化。
The advantages of CT scan are that the changes of intervertebral disc, dural sca, articular process and spinal canal, can be showed clearly.
后旁侧型，主要引起同侧侧隐窝狭窄，同侧神经根受压，并易压迫硬膜囊外前部。
Exterior types, the same side recess was narrow and nervous roots of the same side was...
磁共振显示在椎管背侧左边有一个边界清楚，椭圆形的块状病变，在C7平面压迫硬膜囊。
Magnetic resonance imaging revealed a well-defined, oval mass lesion on the left dorsal aspect of the spinal canal, which compressed the dural sac at the level of C7.
结论：我们报告一例罕见的外伤性腰椎间盘破裂进硬膜囊内并一个轻微的椎体压缩骨折案例。
Conclusion. We report a rare case of traumatic lumbar disc rupture into the dural sac associated with a mild vertebral body compression fracture.
目的：为了描述一个罕见的案例，外伤性腰椎间盘破裂进硬膜囊并一个轻微的椎体压缩骨折，并回顾相关的医学文献。
Objectives. To describe a rare case of traumatic lumbar disc rupture into the dural sac associated with a mild vertebral body compression fracture and review the pertinent medical literature.
结论螺旋CT能清楚显示腰椎间盘突出及其方向、程度以及硬膜囊、神经根受压情况，对诊断腰椎间盘突出症有较高的价值。
Conclusion Spiral ct can clearly show the lumbar disc and its direction, extent, and dural sac, nerve root compression case, the diagnosis of lumbar disc herniation has a higher value.
报道经手术证实的28例腰椎间盘突出患者的CT和MRI所见，观察到腰椎间盘膨隆和间盘疝的CT和MRI表现及其所引起的硬膜囊和神经根受压，移位，变形，钙化，真空征等伴随异常。
CT and MRI of 28 cases with protrusion of lumbar disk in surgical. Findings of bulging and herniation by CT and MRI as well pressed, shift, deformed, calcification, vacuum of dural sac and nerve root.
病例介绍∶我们介绍了一例60岁的男性患者，脊髓硬膜内具有孤立的囊尾蚴病。
Case DESCRIPTION: We present an unusual case of a 60-year-old male patient with isolated localization of spinal intradural extramedullary cysticercosis.
研究结果：我们发现41%（12/29）的受试者存在椎间盘的突变或者突出，但都未明显压迫硬脊膜囊。
Results. We found a disc degeneration or disc protrusion in 41% (12/29) of the subjects, but there was no obvious compression of the dural sac.
在正中矢状位图像上测量了L1和S1水平的硬脊膜囊的前后径和上终板角。
On midsagittal images, AP dural sac diameter and the upper-endplate angles of L1 and S1 were measured.
施加轴向负荷后，椎间盘的厚度在三个活动平面明显减少，同时，硬脊膜囊横断面积在11个平面减少，但不会出现在相同运动平面。
Significant reductions of disc height were found at 3 motion segments and of DCSA at 11 segments after compression, but these changes were never seen in the same motion segment.
施加轴向负荷后，椎间盘的厚度在三个活动平面明显减少，同时，硬脊膜囊横断面积在11个平面减少，但不会出现在相同运动平面。
Significant reductions of disc height were found at 3 motion segments and of DCSA at 11 segments after compression, but these changes were never seen in the same motion segment.
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