螺钉

Both hip arthroplasty and AO compressive cannular are reasonable choices for treatment of displaced femoral neck fracture in the elderly, but the results of group A is better than the group B. The rate of postoperative complication of group A is lower than the group B. So hip arthroplasty is a better way between two methods for the elderly with poor conditions.

人工关节置换术和AO加压空心螺钉均是治疗老年股骨颈骨折的有效方法，但人工关节置换术可提高老年人的生活质量，减低术后并发症的发生率，所以人工关节置换的效果优于AO加压空心螺钉。

Both hip arthroplasty and AO compressive cannular are reasonable choices for treatment of displaced femoral neck fracture in the elderly, but the results of group A is than the group B. The rate of postoperative complication of group A is lower than the group B. So hip arthroplasty is a better way between two methods for the elderly with poor conditions.

人工关节置换术和AO加压空心螺钉均是治疗老年股骨颈骨折的有效方法，但人工关节置换术可提高老年人的生活质量，减低术后并发症的发生率，所以人工关节置换的效果优于AO加压空心螺钉。

Objective To compare the effects of hip arthroplasty and AO compressive cannular in treatment of the displaced fracture of femoral neck in elderly.Methods From 1995.5 to 2004.11, 78 elderly patients of over 65 years old with displaced femoral neck fracture were operated with hip arthroplasty and AO compressive cannular.

目的 比较人工关节置换术与AO加压空心螺钉术治疗老年人有移位股骨颈骨折的疗效方法将1995年5月～2004年11月我院收治的78例年龄在65周岁以上的有移位的新鲜股骨颈骨折患者进行回顾性研究，将病例分 A、B两组，A组为人工关节置换组，B组为AO加压空心螺钉治疗组。

Results: The atlanto-occipital transarticular screw trajectory was cephalad tilting in sagittal plane and medially tilting in coronal plane; the ideal angle of the trajectory was (53.3±3.4)° upper tilting in sagittal plane and (20.0±2.6)° midline tilting in coronary plane.

结果：寰枕关节经关节螺钉固定的钉道理想角度为：螺钉方向在矢状面的上倾角为(53.3±3.4)°，在冠状面的内倾角为(20.0±2.6)°。

The indirect decompression mechanism of the pedicle screw open the fracture vertebral and intervertebral discs ,strain posterior longitudinal ligament and intervertebral discs annulus tibrosus ,and push the bone pieces in the vertebral canal ahead to reduct, this process is Ligamentotaxis ,It is function depends on the completement of posterior longitudinal ligament and intervertebral discs annulus tibrosus.

椎弓根螺钉间接减压机制是通过椎弓根螺钉撑开损伤部椎体与椎间盘，紧张后纵韧带与椎间盘纤维环，将凸入椎管的骨块推向前方而复位，称为韧带整复。

METHODS: From June 2007 to March 2009, 8 patients with terrible triad of the elbow were treated. The fracture of the radial head was classified according to the system of Mason, with typeⅠ in 1 patients, type Ⅱ in 6 and type Ⅲ in 1; fracture of the coronoid process was classified according to the system of Regan and Morrey, with type Ⅰin 2 patients, type Ⅱ in 5, and type Ⅲ in 1. The hollow lag screws and Herbert screws were used to fixe coronoid process and radial head fractures, and repair Annular ligament. Lateral collateral ligament was repaired in 1 case. All injured extremities were treated with a posterior plaster splint with the elbow joint held in 90° of flexion and the forearm in neutral rotation for 2-3 weeks followed by elbow rehabilitation training.

于2007-06/2009-03共收治肘关节恐怖三联征患者8例，其中尺骨冠突骨折按 Regan-Morrey法分类：Ⅰ型2例，Ⅱ型5例，Ⅲ型1例；桡骨头骨折按Mason法分类：Ⅰ型1例，Ⅱ型6例，Ⅲ型1例。8例患者均采取了内固定治疗，采用中空拉力螺钉或Herbert螺钉固定冠突和桡骨头骨折，修补环状韧带，1例缝合修复肘外侧副韧带，术后屈肘90°旋前中立位，以塑形良好的高分子管型石膏固定两三周后开始屈伸和旋转康复训练。

The real-world joints in the aircraft structure usually consist of multi-row fasteners. This thesis builds the 3D FE contact analysis model of a typical aircraft joint with three-row countersunk screws, and studies pin-load distribution and stress characteristics under constant and varied cross-section thicknesses as well as with and without pre-tighten screw conditions for the joint. Many applied pin-load numerical distribution laws for different conditions in the joint are recognized.

本文对典型的多排沉头螺钉接头建立了三维有限元接触分析模型，对螺钉的钉载分布在截面等厚度和变厚度、无预紧力和加预紧力多种情况下进行了数值计算分析，给出了诸多实用化钉载分布规律。

Methods A total of 15 cases were fixed and fused with lateral mass screw of atlas and vertebra dentata pedicle screw.

方法采用寰椎侧块螺钉与枢椎椎弓根螺钉技术对15例寰枢椎不稳的患者进行固定。

Objective To summary the results of fixation and fusion with lateral mass screw of atlas combined with vertebra dentata pedicle screw for treatment of atlantoaxial instability and discuss the corresponding therapy methods.

目的总结侧块螺钉与椎弓根螺钉技术治疗寰枢椎不稳的效果，探讨寰枢椎不稳的固定方法。

Methods:Twelve patients with fresh transverse fracture of patella were reviewed in the study.The hemarthrosis,blood clot,fracture fragments and soft tissues between them were cleared with arthroscopy.With the help of C-arm X-ray,the fracture was reduced with manipulation method.After the articular facet reached anatomical reduction,two Kirschners were inserted percutaneously from proximal end to distal end of fracture to fix the fragments,Two hollow screw were put along the approach of Kirschners,and tension band fixation was performed with the shape of "8".Results:All the patients were followed up averagely 12.4 months.

12例新鲜髌骨横骨折患者通过关节镜清理关节腔内的血凝块、碎骨块和骨折块之间嵌顿的软组织，直视下观察骨折复位情况以指导骨折复位固定，在C形臂X线透视下帮助骨折复位，关节镜观察关节面解剖复位后，经皮从近折端向远折端平行打入2枚克氏针固定骨折块，顺克氏针拧入2枚中空螺钉，拔除克氏针，顺螺钉空心导入钢丝，行张力带&8&字固定。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。