- 更多网络例句与寰齿的相关的网络例句 [注：此内容来源于网络，仅供参考]
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The X line that the method collects 75 patients is smooth piece reach CT piece, observe cervical vertebra thorn respectively dash forward, horizontal dash forward even the line, extensive region - tine joint clearance, dentate dash forward with spine dash forward the change of bisector.
方法收集75名患者的X线平片及CT片，分别观察颈椎棘突、横突的连线，寰-齿关节间隙，齿状突和棘突平分线的变化。
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［Objective］ To investigate the stability and function of atlantoaxial segment after atlas odontoid process artificial joint replacement.
［目的］测试寰椎齿状突人工关节置换后寰枢椎的稳定性和功能。
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OBJECTIVE: To evaluate the clinical outcomes of atlantoaxial pedicle screw system in the treatment of atlantoaxial instability from odontoid fracture.
目的：分析椎弓根钉棒系统治疗齿状突骨折引起寰枢椎不稳的临床疗效。
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Methods: Injured patients of cervical spine was cayyied on X-ray inspection.,then according to the result of ADI and LADS ,next to CT or MRI inspection ,and that was to guide clinical diagonosis and treatment.To observe atlanto-dental interval (anterior arch of atlas posterior border to odontoid process anterior border) and odontoid process caster(included angle between axis of ordinate of odontoid process and axis of ordinate of odontoid vertebra) on the X-ray lateral projection.
对有颈部外伤史的病人常规行X线检查，然后根据寰齿间距和齿突侧块间隙的结果，行下一步CT检查或者MRI检查，指导临床治疗方法的选择。X线侧位片观察寰齿前间隙(为寰椎前弓后缘与齿突前缘距离)，齿状突后倾角(齿突纵轴与枢椎体纵轴的夹角)；开口正位片上测定齿突侧块间隙。
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The huge interarticular contact force of artificial atlanto-odontoid joint at shear and flexion/extension will bring about abrasion, mobilization and destruction of bone or prosthesis. There is potential instability in rotation after replacement operation.
人工寰齿关节置换术后前后向剪切和屈伸运动时人工寰齿关节间的接触应力过大，易造成磨损、引起假体松动和骨或假体的破坏；并且潜在旋转不稳的趋势。
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［Objective］ To analyze the outcome of internal fixation for occipitalization with atlantoaxial joint dislocation by posterior decompression and occipitocervical fusion ［Method］ From December 2005 to June 2007,8 patients with occipitalization and atlantoaxial joint dislocation received removal of the posterior arcus of atlas and the enlargement of the posterior edge of the foramen magnum after skull traction performing for an average of 135 daysAll patients were operated on by posterior craniocervical fusion using cervifix internal fixation system and autologous ilium graftsThe clinical efficacy after operation was analyzed by Japanese Orthopaedic Associationneural function score ［Result］ All the patients were followed up from 6 months to 2 years, average of 15 monthsNo complication was foundAtlantodental interval was 5~9 mm before and 4~6 mm after skull tractionAtlantoaxial joint dislocation didn't completely reducedThe neurological defects were improved to some extents according to the JOA scoreImageology showed all patients had full decompression and bony fusionThe loosening or broken internal fixation was not found ［Conclusion］ Posterior decompression and fusion is a feasible method for the treatment of occipitalization with atlantoaxial joint dislocation,and the clinical effect is satisfactory
分析后路减压枕颈融合内固定术治疗合并寰枢关节脱位的寰椎枕骨化临床疗效。［方法］2005年12月至2007年6月间，对8例合并寰枢关节脱位的寰椎枕骨化患者在行颅骨牵引治疗一段时间（12~16 d，平均135 d）后采用枕骨大孔后缘扩大，寰椎后弓切除减压取自体髂骨枕颈融合Cervifix系统内固定术，手术后采用日本骨科学会神经功能评分分析临床疗效。［结果］8例患者随访6个月~2年，平均为15个月。8例患者无一例出现术后并发症，术前寰齿前间隙为5~9 mm，经颅骨牵引后为5~7 mm，寰枢关节脱位未能完全复位。手术前后JOA评分示神经症状均有不同程度恢复，影像学检查示枕颈区减压充分植骨区获得骨性融合，无一例出现内固定松动或断裂。［结论］合并寰枢关节脱位的寰椎枕骨化患者术前仔细评估影像学改变，采用颅骨牵引一段时间后行后路减压枕颈融合内固定术的治疗方案是合理可行的，且临床效果满意。
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Fusion can provide stabilization for atlanto-axial joint, but it restricts the movement between atlas and axis and induces degeneration and instablility of unfused cervical spine.
本研究旨在开发一种人工寰齿关节，临床应用它来治疗寰枢椎脱位与不稳，以达到既恢复寰枢关节的稳定性又保留其运动功能的目的。
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The new idea, such as the"rotation"of atlas in 3 direction in some of AADs with intact axis, vertebrated odontoid, complete dislocation of AADs with detached odontoid, and differentiation of"dislocation of atlantoaxial joint"and"stenosis of canal"in atlantoaxial subluxation with detached odontoid, are established in this report.
1、本研究提出了一些新的概念，如枢椎完整型AADs时其寰椎在三个方向上的&旋转&脱位、椎体化齿突畸形、齿突不连型AADs的完全脱位、齿突不连的寰枢半脱位时&脱位&和&狭窄&的区分、枕大孔不规则狭窄等为本研究的新的发现或提出的新概念。
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This series included 35 male and 22 female, and the mean age was 34.6 years (range, 13– 66 years). The pathology included atlantoaxial instability in 52 patients (os odontoideum in 26 patients, transerse ligament relaxation or disruption in 20, odontoid fracture nonunion in 6), and irreducible atlantoaxial dislocation in 5 (os odontoideum in 1 patient, transerse ligament relaxation in 1, malunion of odontoid process fracture in 3). Twenty-four patients presented signs and symptoms of spinal cord and/or brain-stem dysfunction.
这个系列包括35个男性病人和22个女性病人，平均年龄是34.6岁（范围，13~66岁）。52个病人是寰枢椎不稳（26例os odontoideum、20个横韧带松弛或破裂、6例齿状突骨折不连），5例不可复位的寰枢椎关节脱位（1例os odontoideum，1例横韧带松弛，3例齿状突骨折连接不正）。24例有脊索和脑干功能不良的症状和体征。
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Similarly, a axis FEM model was constructed to simulate the axis fracture, emphasized on the odontoid process. Three kind of odontoid process fracture were analysed on this model, which occurred respectively on the tip, the middle and the fundus. The results gave the best angle to fracture the odontoid process of the axis.
四、建立了枢椎的三维有限元模型，对枢椎齿状突骨折机理进行了理论上的研究，重点针对临床上齿突骨折的三种分类：1、齿突尖骨折：2、齿突腰部骨折：3、齿突基底部骨折，赋予齿状突在矢状面沿各种角度下受力条件，模拟寰椎前弓、寰椎横韧带以及C2-3棘间韧带对枢椎造成的暴力破坏，确定了最可能引起齿状突暴力骨折的受力角度。
- 更多网络解释与寰齿的相关的网络解释 [注：此内容来源于网络，仅供参考]
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atlas：寰椎
一、寰枢椎的解剖与病理 第1颈椎又名寰椎(atlas) 呈环状,无椎体 突和关节变,由前弓 后弓 及侧块组成. 前弓较短,后面正中有齿突凹,与枢椎的齿突相关节. 侧块连接前后两弓,上面各有一椭圆形关节面,与枕髁相关节;
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axis：枢椎
出现了 2 枚荐椎,第一,第二颈椎分别特化为寰椎(atlas)和枢椎(axis).荐椎数目的 增多及其与腰带的牢固连接,加强了后肢承受体重负荷.寰椎前部与颅骨的枕髁关连,枢椎 的齿突伸入寰椎,构成可动联结,使头部获得更大的灵活性,
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Dens：齿突
指状突起,称为齿突(dens)与寰椎前弓后面的齿突凹相关节. 齿突原为寰椎的椎体,在发育过程中脱离寰椎而与枢椎椎体融合. 枢椎的椎体较其它颈椎要小. 齿突两侧各有圆形的关节面,称为上关节面,与寰椎的下关节面相关节. 椎弓根短而粗,
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imaging：影像学
P代表病因(Pathogenesis )分型、I代表影像学(Imaging)分型、R代表力学稳定性(Reduction)分型. 另外,还有学者以寰齿间距(ADI)的变化为依据而诊断半脱位. 正常情况下,成人ADI<3.0mm,儿童ADI<4.0mm.
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atlantoaxial dislocation：寰枢椎脱位
枢椎齿状突上升可造成延髓或颈髓的压迫. 3.寰枢椎脱位(atlantoaxial dislocation)先天性寰枢椎脱位的多见原因是齿状突发育不良或缺如. 寰枢椎脱位常致延髓及上颈髓压迫. 早期主要采用单纯颅后窝减压术和空洞脊蛛网膜下腔分流术,