螺钉

BACKGROUND: The entry point and direction of screw, iliosacral screw length, S1 pedicle screw shape and iliosacral joint adjacent structure understandings are key factors for successful iliosacral screw fixation.

背景：正确地选择进针点、进针方向和骶髂螺钉长度，以及对S1椎弓根形状和骶髂关节毗邻结构解剖的了解成为骶髂关节螺钉置入成败的关键。

The treatment of the Tile C type pelvic fracture with the percutaneous iliosacral articulation screws and pelvis external fixation under X-ray perspective has the advantages including small wound, simple operation, reliable fixation, short operation time, quick reactivating and low operation infection rate.

X射线透视引导下经皮骶髂关节空心螺钉联合骨盆外固定架治疗C型骨盆骨折创伤小、操作简单、固定可靠、手术时间短、术后患者可立即恢复活动、手术感染率低。关键词：空心螺钉；外固定；骨盆骨折；并发症

Objective To compare advantage and disadvantage of internal fixation method for tibia intercondylar eminence fracture between absorbable screw and metallic screw.

目的 比较可吸收螺钉与金属螺钉内固定治疗胫骨髁间嵴骨折的优缺点。

It is a customized device for the process of bolts fastening on the starter motor shells to ensure the equal tightening force on the different interpole bolts. Driven by the oil motor, it runs stably and safely.

该设备系起动机外壳紧螺钉工序的专用设备，保证起动机外壳各磁极螺钉的扭紧力相同；采用油马达驱动方式，转动平稳安全可靠。

There is no point inturning the Screwdriver until this position is reached, because there will be no thread in

在螺钉没有推到位前不需要拧动骨螺钉六角扳手，因为此时没有

Objective: To explore the value of different surgicalmethods in the treatment of the displaced femoral neck fracture of the elderly.analyse joint function, complications, reversion factors Methods: An follow up study was done on 71 cases older than 60years who were treated with internal fixation, femoral head arthrop lasty and total hip joint replacement between 2000 and 2005 to compare the difference upon operation time, blood loss, duration of hospi-talization , joint function evaluation one and two years after operation , complications and reversionrate.

目的：探讨加压空心螺钉内固定术、人工股骨头置换术和人工全髋关节置换术在治疗老年人移位性股骨颈骨折中的临床价值。分析术后髋关节功能、并发症、二次手术或翻修率等相关因素。方法：对2000—2005年于长春中医药大学第一附属医院骨科收治的71例60岁以上移位性股骨颈骨折患者进行了随访研究，比较AO加压空心螺钉内固定术、人工股骨头置换术和人工全髋关节置换术在手术时间、出血量、住院时间、术后下地时间、术后12个月和24个月的髋关节功能评价、并发症以及二次手术率方面的差异。

Objective: To clarify the technical parameters in posterior atlanto-occipital transarticular screw fixation and discuss the clinical significance of occipitocervical junction fixation with transarticular screws.

目的：明确后路寰枕关节经关节螺钉固定的技术参数；探讨枕颈部经关节螺钉内固定技术的临床意义。

Direction and length of trajectory are the key of posterior atlano-occipital transarticular fixation, if combined with C1-C2 transarticular fixation, it will be an ideal fixation method for occipitocervical fusion.

寰枕关节后路经关节螺钉植入存在一定的方向性和钉道长度，结合后路C1-C2经关节螺钉内固定后可视为能满足当前临床需要的一种相对理想的枕颈融合内固定术式。

And then the occipitocervical fusion, Brook-Jenkin atlantoaxial fusion, odontoid process compressive screw and vertebral double screws fixture were performed according to different fractures or dislocations.

交通事故伤30例，高处坠落伤6例。临床均有颈部疼痛、活动受限。有不同程度神经受压症状与体征者25例。根据损伤类型，分别采用枕颈框架植骨融合术，Brook-Jenkin寰枢椎融合术，齿状突直接加压螺钉内固定术，前路椎体双螺钉固定术。

The addition of intermediate screws at the fracture levels enhances the biomechanical stability of a short-segment pedicular fixation, and aids the height recovery and reduction of vertebral body.

附加伤椎置钉较传统的4枚螺钉固定可增加生物力稳定性，有助于椎体高度恢复的保持和复位。关键词：椎弓根螺钉；生物力学；运动范围

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。