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In vertebra with heterogeneous bone structure, balloon expansion may be nonuniformly as a result of this heterogeneity and could result in inadequate fracture reduction.

当椎体骨质结构不均匀时，可能导致球囊不均匀的膨胀，造成骨折复位不充分。

Objective. To stress the importance of the fusion angle of the occipitocervical spine based on an unusual case of upper-airway obstruction after a posterior fusion from the occipital bone to the second cervical vertebra (O-C2) in a flexed position.

目标：通过一例少见的后路枕骨与颈2在屈曲位融合术后出现上气道梗阻的病例强调枕颈脊柱融合角度的重要性。

Methods Uses in the axis shape to 51 example chest lumbar vertebra bone fracture dislocation patient to treat fixedly and to make a follow-up visit, after before the photomicrometrology, technique, the wound prevertebral reason altitude, the inspection nerve function restores the situation which the degree and the merge lumbago occurs.

对51例胸腰椎骨折脱位患者采用轴形内固定治疗并随访，测量术前、术后伤椎前缘高度，考察神经功能恢复程度及合并腰痛发生的情况。

Objective This study summarized the treatment effect of tuina and drawing or they combined with Chinese medicine on the cervical vertebra retrogressive disease.

目的 回顾性观察推拿和牵引与复合中药的治疗方法对于颈椎退行性变的治疗作用。

Total sacrectomy is a useful method to treat the tumors which involve the first sacral vertebra.

全骶椎切除术是治疗侵犯到第一骶椎的肿瘤的有效方法。

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。

Fifty rats in the model group underwent ovariectomy, while the other 20 rats in the control group had sham operations. Three months later, 10 rats in the model group and 10 rats in the control group were selected randomly to detect their body weight, uterus weight, BMD of the left femur and lumbar vertebra, biomechanical characteristics of the left femur, levels of serum Ca2 +, Cr, ALP, SOD, MDA and GSH-Px and serumal resistance to OH(superscript -).

4个月龄雌性SD大鼠70只，随机取50只行双侧卵巢切除术，20只行假手术。3个月后随机从手术组和假手术组各取10只大鼠检测体质量、子宫湿重、左侧股骨及腰椎骨密度、生物力学特性和血清生化指标Ca(上标 2+)、肌肝、碱性磷酸酶水平，以确定骨质疏松模型建立成功。

［Objective］To study the biomechanical stability of slidable pedicle screw system with the comparison of slidable pedicle screw system and universal pedicle screw system in intensity,rigidity and other biomechanical functions.［Method］Twelve spinal specimens of the pig were randomly divided into two groups and the schubweg on the vertebra of T12 were measured in different conditions.In the end the intensity and rigidity of two groups were compared which were computed by the schubweg.

［目的］对滑动椎弓根钉系统与通用椎弓根钉系统在脊柱侧凸固定强度、刚度和稳定性等方面进行生物力学比较，以测试滑动椎弓根螺钉内固定系统稳定性的生物力学性能［方法］采用12具猪新鲜脊柱标本，随机分成两组分别测量不同工况下T12椎体的位移，并计算其强度和刚度进行比较。

Lateral neck of vertebra's internal fixation can rectify frift, recovery spinalis physiologic radian, increase confluens rate of bone graft and elevate curative effect.

椎弓根内固定可矫正滑移，恢复脊柱的生理弧度，达到即刻稳定，增加植骨的融合率，提高手术疗效。而植骨方法的不同对椎间骨性融合成功与否关系极为密切。

It is an ideal operation for applying ilium autografting with vertebral canal posterior wall plastic operation combining pedicle screw fixation to treat burst fracture of thoracolumbar vertebra with spinal stenosis, it is a simple and safe operative technique to entirely decompress in duramater and nerve roots and enlarge bore of vertebral canal therefore eliminating secondary spinal stenosis, the reconstructing of posterior column including spinous process and supraspinal ligament also increasing spinal stability.

自体髂骨移植椎管成形加椎弓根螺钉内固定，对严重胸腰椎爆裂性骨折伴椎管狭窄是一种较理想的手术方法。此方法操作简单、安全，解除神经及硬膜囊压迫的同时扩大了椎管，杜绝了继发性椎管狭窄，重建了后柱结构包括棘突及脊上韧带，增加了脊柱稳定性，值得推广。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。