椎体下的

Because of the complications of abdominal organs injury or retrograde ejaculation after ALIF, and the high risk of nerve injury after PLIF, these two surgeries were reduce to perform in clinic nowadays. While TLIF has be consider to have less risk of injuries of nerve root, cauda equine, dura matar, and less incidence of lumbar unsteadiness and spondylolithesis.

研究背景腰椎椎体间融合术是目前治疗椎间盘源性下腰痛、腰椎滑脱症、腰椎不稳症等原因引起的下腰痛效果较为满意的一种腰椎融合手术方式，其主要分为前路椎体间融合术、后路椎体间融合术以及经关节突入路椎体间融合术。

Methodsafter total decompression of the spinal nerve through posterior medline approach, discectomy of the slipping segment was performed with a circular saw with diameter of 1.0 centmeter. under direct visualization through the hole of the circular saw, the disc tissue including cartilage of upper and lower end plates was removed with a long handle curette.

方法后正中入路脊髓神经根彻底减压后，用直径1.0 cm环锯摘除滑脱椎体间的椎间盘，然后通过环锯孔直视下彻底清除椎间盘髓核组织，用长柄刮匙刮除椎体上下终板软骨，使骨面成鱼鳞状。

Flows to the subclavian or the vertebral arteries are not compromised.

流向锁骨下或椎体动脉的血液并未因此减少。

The recoery rate was calculated as follows;(JOA score at follow up_preoperatie JOA score)/(17 _ preoperatie JOA score) _ 100,15 and the surgical outcomes were classified into four grades based on the calculated recoery rate; excellent: recoery rate 75% or higher, good: 50–75%, fair: 25–50%, and poor: lower than 25%. Ealuation was made on radiographic findings, including the range of motion and the jaw diameter (a measured line from the posteroinferior corner of the ertebral body to the anterior aspect of the subjacent lamina) at the adjacent leels in group A and the affected leels in group B and the spinal canal diameter at the C4 leel in both groups. The C4 leel was chosen for this measurement, because the spinal canal is usually narrowest at this leel.

恢复率如下计算；（随访JOA评分-术前JOA评分）/（17-术前JOA评分）*10015，按计算的恢复率将手术结果分4级；优：恢复率75%或更高，良：50-70%，中：25-50%，差：低于25%。X线片结果评价，包括活动范围和颌直径（从椎体下后角到下邻椎板前方的测量线）在A组相邻水平与B组受影响水平及两组C4水平椎管直径。C4作为该侧量的选择是因为通常在此平面椎管最为狭窄。

Objective:Evaluate vertebrae anatomical change and the straight line correlation of intervertebral foramenand and vertebral gap,vertebral uncus,transverse foramen and vertebral uncus;provide iconography anatomical data for iconography diagnosis and clinicale treatment.

目的：揭示正常成人下颈椎椎体、椎体间隙、椎弓根、钩突、椎间孔及横突孔各解剖结构随年龄增长的形态学变化规律及椎间孔与椎体间隙、钩突、椎弓根之间，横突孔与钩突之间的直线相关关系，为影像诊断及临床诊治提供影像解剖学资料。

We selected one axial slice that passed through the upper part of the pedicle and another one that passed through the lower part of the pedicle and compared next parameters in both cuts: pedicular cortical width, pedicular endostal width, pedicular angle, vertebral body length, vertebral body width, vertebral perimeter angles, and visual appearance of vertebral body shape.

我们选择一个通过椎弓根上半部的轴向切片和另一个通过椎弓根下半部的轴向切片，对两个切片进行以下参数的比较：椎弓根皮质宽度，椎弓根骨内膜宽度，椎弓根角度，椎体长度，椎体宽度，椎体圆周角和椎体的外形。

Our results showed that the most appropriate rib's level for applying force was below the apex of scoliotic spine. From this appropriate level, the stress delivered to its conjunctive vertebra was the highest, as 1.3~1.8 times compared with others. Furthermore, the correction of Cobb's angle was also the highest, achieved 15%. The ML force was dominant in alteration of Cobb's angle, whereas the AP force was dominant in alteration of axial vertebral rotation. In addition, initial vertebral rotation influenced neither correction nor stress.

研究结果显示由凸点椎体的下一节对应之肋骨施力能使传入椎体具最高平均应力，较其他施力位置高出1.3到1.8倍之间，对柯卜氏角度可达15%的最佳矫正率；其中侧向施力主导冠状面上的矫正，而前后向施力主导扭转角度的矫正；另外椎体初始旋转角度对侧弯矫正和应力分布均无明显影响。

Dept. of orthopedics of the People's Hospital of FengRun district TangShan HeBei , 064000,China Percutaneous vertebroplasty is a minimally invasive techniques in spine surgery , solidifiable material is injected into the diseased Vertebro of neck, thoraco and lumbar spine under imaging guidance for the treatment of pain and dysfunction caused by bone cancer and vertebral fractures. the purpose is to let the patients can move early and improve their quality of life.

经皮椎体成形术 Percutaneous Vertebroplasty是脊柱外科领域的一项微创技术，旨在影象引导下经皮向颈、胸、腰椎椎体的病变部位注入凝固性材料用以治疗椎体骨折和溶骨性骨肿瘤引起的疼痛和功能障碍，达到早期下床活动，改善生活质量的目的。

Methods:One hundred and six disarticulated human verebrae(C3～C7)were evaluated with computed tomography to determine vertebral bone mineral density.Pedicle screws and lateral mass screws were inserted to the left and right at random.Screws were loaded either axially strictly longitudinal to failure or in a coronal plane strictly perpendicular to the logitudinal axis,the strengths and displacements were recorded.

方法解离C3～C7骨块120个随机分为两组，测量每个椎体骨的松质骨密度，同一节段椎体随机配对置入椎弓根和侧块螺钉，在位移控制下分别测量位移控制下的平均最大拔出阻力和压力控制下的切向弹性与永久位移。

Vertebral column were excided through dorsal meso-incision. the removed vertebral column were put on ice as soon as possible and L1/2, L2/3, L3/4, L4/5, L5/6 intervertebral disc tissue were procured.

取下整个腰椎段脊柱迅速放在冰面上，用眼科剪刀、镊剥离椎间小关节和椎体前方的软组织，分别从L1椎体下缘和L2椎体上缘分离上、下软骨终板，取出L1/2椎间盘组织。

I can not make it blossom and suits me

我不能让树为我开花

When temperatures are above approximately 80 °C discolouration of the raceways or rolling elements is a frequent feature.

当温度高于 80 °C 左右时，滚道或滚动元件褪色是很常见的特征。