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The update instrument can achieve the purposes of tiny-hurt, rapidness, combining rapid traction and reposition with sustaining traction and fixation when be used to treat fracture of zygomatic bone.

改进型颧骨颧弓骨折牵引复位固定器更加便捷实用，实现了微创、快速牵引复位与持续牵引复位固定相结合治疗颧骨颧弓骨折的目的。

The outcomes of diaplasis and fixation by using pedicle screw fixation in treatment on acture hangmans fracture were satisfaction, and this clinical technique can promot functional recovery of spinal cord, decrease the rate of infection and less affect the function of uper cervical spine.

椎弓根螺钉内固定治疗早期枢椎椎弓骨折，复位固定满意，促进脊髓功能的恢复，且较少影响上颈椎功能。

Methods:Select 11～18 year old patients with bimaxillary protrusion 20 cases were randomly divided into two groups:TPA group,TPA＋Nance arch group.Two cases are the uprooting of four first premolars,the use of straight wire appliance technology,one step closure extraction gap analysis before and after treatment lateral skull X ray film and dental cast changes in the indicators.

选取11～18 岁双颌前突患者20 例，随机分为：TPA与TPA＋Nance弓两组；两组病例均拔除4个第一前磨牙，使用直丝弓矫治技术，一步法关闭拔牙间隙，分析治疗前后X线头颅侧位片及牙颌模型的各项指标变化。

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。

Rats in experimental group were placed on the expansion appliance, inserting into the diastema between the first and second molars, then stick to molar lingual using light-cured resin for retention.

实验组采用0.014澳丝弯制双眼圈簧样扩弓装置，插入第一、二磨牙牙间隙，用光固化树脂粘结在大鼠磨牙舌侧进行固位；对照组安装未加力的同型扩弓装置。

The descending one is the continuing of dorsal branch, it crosses the ulnar edge of the fifth metecarpal bone and anastomizes with the digital artery of little finger or hypothenar branch of deep palmar (accounted for 70%).

降支为腕背支的延续，经第5掌骨尺侧缘直达掌骨头颈处与小指动脉尺侧支或掌深弓小鱼际支相吻合占70%；降支至豌豆骨附近变为纤细，由小指动脉尺侧支或掌深弓小鱼际支上行与之吻合占30%；吻合外径(0.5±0.1) mm。

Objective: To study the efficacy of transpedicular intracorporeal grafting combined with GSS-Ⅱ pedicle screw internal fixation in preventing complication after the operation.

目的：探讨经椎弓根植骨加GSS-Ⅱ型椎弓根螺钉系统固定治疗胸腰椎骨折对防止术后并发症的意义。

Methods Biomechanical characteristics of LSRF was tested, and three dimensional finite element model of lumbar spondylolysis and isthmic spondylolisthesis was established, the stress of lumbar i...

目前椎弓峡部崩裂滑脱的治疗方法有原位植骨融合，直接修复单椎体固定，经椎弓根复位固定后外侧植骨融合，椎间融合和前后路同时融

Methods 47 patient were treated with pedical screw fixation and spinal fusion for grades I and 2 isthmic spondylolisthesis. In 22 patients posterior lumbar fusion was performed, and in 25 patients posterior lumbar interbody fusion was performed. Two groups were compared for clinical outcome, radiographic date (include: correction of slippage, disc space height, segmental lordosis and fusion rate) and complication rate.

Ⅱ度以内腰椎峡部裂型滑脱共47例，一组22例，椎弓根器械复位固定后行PLF；另一组25例，椎弓根器械复位固定后行PLIF对两组的临床疗效、X线影像学结果（包括：滑脱矫正、滑脱节段椎间隙高度改变、滑脱节段前突角改变及骨融合）及并发症进行对比观察。

objective the purpose of this study was to explore the method and effectiveness of apertognathia of anterior teeth in teenagers.methods the majority patients were corrected with edgewise appliance after draw four molars, all sorts of flexure were curved on the appliance, used perpendicular traction for anterior teeth and ii, iii maxillomandibular traction, fine adjust intercuspal position ,tip and cavity.

目的 探讨青少年前牙开牙合的矫治方法和效果。方法多数患者采取拔除4个磨牙之后使用方丝弓矫治器矫治，矫治中在弓丝上弯制各种曲，并使用前牙垂直牵引和颌间ⅱ类、ⅲ类牵引，精调牙位及尖窝关系。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。