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MAIN OUTCOME MEASURES: 3-D transference of expansion board and whole stabilization of distractor were observed in the process of distraction osteogenesis.

主要观察指标：在牵张杆的作用下，牵张板在三维方向移动以及牵张器整体稳定情况。

A stable and duplicable experimental dog model on study of vertical alveolar distraction osteogenesis have established successfully by the intraosseous distractors, which provides a good foundation for domestic production of alveolar distractor and clinical practice of the technique.

采用该骨内型牙槽骨牵张器成功建立稳定的、重复性好的犬牙槽骨牵张成骨动物模型，为牙槽骨牵张器的国产化和临床上应用该项技术打下基础。

New type of chronic and progressing filum terminale traction model of TCS was constructed and traction was removed after different times.

建立新型TCS慢性进行性终丝牵拉动物模型，进行不同时问的牵拉后解除牵拉。

Please forgive me of willfulness, forgive me for the harm you inadvertently, perhaps, like the lyrics written by : Perhaps pulled a hand hand foreordination may not necessarily have a good go with the road is even more busy lives so pulled a hand made with hand So of the road years to come back next life should therefore go along with the road has not years to come back to lead you really want to take the hand continue!

请原谅我的任性，原谅我对你不经意的伤害，也许真的象歌词中写的那样：也许牵了手的手前生不一定好走也许有了伴的路今生还要更忙碌所以牵了手的手所以有了伴的路没有岁月可回头来生还要一起走所以有了伴的路没有岁月可回头真的希望牵着你的手走下去！

RESULTS: The self-prepared 3-D external distractor was 30 g. The lengthener was built to provide 3-D suture expansion osteogenesis by changing the direction. The expansion bar could be moved about 2 cm in anteroposterior axes, 3.5 cm in perpendicular axes, 3 cm in coronal axes.

结果：自行研制的三维缝牵张器重量30 g，牵张杆前后向移动2 cm左右，上下方向移动3.5 cm左右，向外移动3 cm左右，牵张控制准确，三维变向简便易行。

The bone mineral density of mandible was measured at 1 day, 1, 2, 4 and 6 weeks after operation. The expression and distribution of Smad7 were observed by immunohistochemistry.

各组分别于牵张成骨后1 d，1，2，4，6周取材，在牵张成骨侧下颌骨行骨密度测量，用免疫组织化学法观察兔下颌骨牵张过程中不同时期Smad7的表达和分布。

Objective: The purpose of this study is to establish a periosteal distraction model on rabbit mandiblar ramus, to observe the formation of newly formed bone and its structure in each phase after distraction of periostea, to observe the changes of periostea after being secondary to distraction forces, to investigate the possibility of osteogenesis by periosteal distraction in oral and maxillofacial region, and to study the possibility of a new restoration method of clincal alveolar and other bony defect.

目的：本研究在兔下颌升支建立骨膜牵张成骨模型，观察牵张骨膜后，在骨膜下新骨的形成，以及新骨在各个阶段的结构，同时观察了骨膜受到牵张力后的改变，研究骨膜牵张在口腔颌面部成骨的可能，为牙槽骨缺损及其他口腔颌面部骨组织缺损探讨新的重建方法。

We compared the effect of the number of weekly repetitions of a static stretching program on the flexibility, hamstring tightness and electromyographic activity of the hamstring and of the triceps surae muscles. Thirty-one healthy subjects with hamstring tightness, defined as the inability to perform total knee extension, and shortened triceps surae, defined by a tibiotarsal angle wider than 90 degrees during trunk flexion, were divided into three groups: G1 performed the stretching exercises once a week; G2, three times a week, and G3, five times a week.

我们比较每周重复静态牵张方案的次数对灵活性、腘绳肌紧张以及腘绳肌与小腿三头肌的肌电灵敏度的影响。31例腘绳肌紧张的健康受试者（腘绳肌紧张为无法进行全膝伸展和小腿三头肌缩短（躯干弯曲时胫附的角度大于90度））被分为3组：G1组，进行每周一次的牵张训练；G2组，进行每周三次的牵张训练；G3组，进行每周五次的牵张训练。

Before transfected with AT1, neither AngⅡ nor stretch increased the activation of ERKs. After transfected with AT1, pretreatment with AngⅡ for 8 min or stretch for 10 min activated ERKs obviously.

COS7细胞转染AT1受体以前， AngⅡ和牵张刺激都不能引起细胞内ERKs磷酸化升高；而转染野生型AT1后，AngⅡ和牵张刺激引起细胞内ERKs磷酸化明显升高，各突变体中，Q257A和C289A转染细胞后细胞对牵张刺激的反应受到明显抑制，提示AT1的牵张感受位点在Q257A和C289A。

Methods:Nine patients with contraction of Achilles tendon were treated by Ilizarov retractors.The ankle retractors was assembled before surgery and put around leg and foot during the operation.The center of the hinges of the apparatus was pointed to the joint space firstly.Groups of Kirschner pin were penetrated through legs and another two groups through feet and then fixed with the steel rings of the retractors.

用Ilizarov踝关节牵伸器治疗跟腱挛缩9例，手术时先将预先组装好的踝关节牵伸器套在小腿与足部，牵伸器的铰链式关节对准踝关节的关节间隙，在小腿和足部各穿2组克氏针与牵伸器的钢环固定。

Chrysanthemum of 10 thousand birthday is lax to edaphic requirement, with the arenaceous qualitative loam with fecund, good drainage had better.

万寿菊对土壤要求不严，以肥沃。排水良好的砂质壤土为好。

He unstepped the mast and furled the sail and tied it.

他拔下桅杆，把帆卷起，系住。