CT measurement of tibial torsion after internal fixation in patients suffering from unilateral tibial fracture

胫骨 骨折内固定术后 扭 转角的CT测定

The expression for torsion notch strength of ceramic materials was proposed based on the stress analysis of a cylinder under torsion and the theory of brittle fracture strength due to Griffith .

根据 受 扭矩圆柱体中的应力分析和Griffith脆 断强度理论，提出了脆性材料的抗扭切口强度表达式。

The stiffness in middle vertebrae were measured under flexion extension lateral flexion and torsion stress before fracture and after absorbable balloon vertebroplasty respectively .

分别于 骨折前、 骨折撑开复位椎体成形术后，用万能材料试验机测定中间椎体在前屈、后伸、侧屈状态下应力&应变、轴向刚度变化及 扭转应力下刚度的变化。

Besides the procedures for treating test data of torsion fracture strength and notch strength of Al_2O_3 tubes from different labs were given and shown to be applicable .

还提出了处理来自不同试验室的Al2O3陶瓷管 抗 扭强度和 抗 扭 切口强度试验数据的思路和方法。结果表明：此试验数据处理的思路和方法是可行的。

Fatigue properties of LY12 aluminum alloy samples under combined tension and torsion were investigated and the fracture surfaces were observed through scanning electron microscopy .

对LY12铝合金的拉 扭复合加载疲劳性能进行了研究，并用扫描电镜对疲劳试样的 断口进行了观察。

Conclusion : CT is convenient and precise in measuring the tibial torsion of patients suffering from unilateral tibial fracture and receiving internal fixation and it is of great clinical significance .

结论：CT对胫骨 骨折内固定术后 扭 转角的测定比较方便、精确，具有较重要的临床应用价值。

According to certain survey most of built continuous beam bridge has emerged some damages like continued under torsion box beam body damage and fracture in cross during construction or operation stage which would affect the daily use and maintenance of the bridge .

根据调查资料表明，大部分已建的连续梁桥在施工阶段及运营时期会出现跨中持续下 挠和箱梁梁体损伤 开裂等病害，这些病害会影响桥梁的正常使用性及安全性。

Under the regional pressure torsion stress YiTong fracture in Neogene in the northwest edge is right strike-slip extrusion properties of thrust .

在区域压 扭应力作用下，伊通盆地西北缘 断裂在新近纪表现为右行走滑、挤压逆冲的性质。

The comparison of experimental results including tension compression torsion tension after torsion with numerical analysis results confirms the validity of the newly proposed ductile fracture criterion on different deformation path .

数值模拟结果与拉伸、压缩、扭转、先 扭转再 拉伸等材料试验结果的对比验证了该准则在不同变形方式下都具有较高的准确性。

The fracture of shaft is even and with obviously characteristic of torsion fracture .

该轴 断口平齐，具有明显的 扭断特征。

Moreover the fracture criteria of ceramics with given survivability under combined tension / torsion can be predicted from the above fracture criterion and the probability distribution parameters of tensile strength of ceramics .

根据该断裂准则和陶瓷材料拉伸强度的概率分布参数，还可预测陶瓷材料光滑试样和切口件在拉/ 扭复合应力下具有存活率的 断裂准则。