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callus distraction
相关语句
  骨痂延长
     Objective:To observe the histomorphological change of callus distraction of cortical bone.
     对皮质骨骨痂延长骨愈合过程的组织形态学变化进行观察。
短句来源
  “callus distraction”译为未确定词的双语例句
     Leg Lengthening by Callus Distraction(Callotasis) to Treat Deformity of Leg Un-equality after
     小腿骨痂牵开延长术治疗儿麻病后遗下肢不等长畸形的临床报告
短句来源
     Experience in Shortening of Lower Limb Lengthening by Callus Distraction
     骨痂牵拉延长治疗下肢短缩21例体会
短句来源
     A Histomorphological Investigation on Callus Distraction of Cortical Bone
     皮质骨骨痂延长骨愈合的组织形态学观察
短句来源
     Objective To study the treatment of gunshot bone defect and the biological basis of primary shortening followed by callus distraction in situ.
     目的 探讨四肢火器伤骨缺损的治疗方法和一期原位骨延长技术的生物学基础。
短句来源
     . Pathological and X ray observation were carried out at 1, 2 ,3 ,6 and 12 weeks respectively after injury for comparison between two groups. Results The X ray measurement showed that the length of callus distraction in the bone lengthening group increased by (2.82±0.94)cm and the relative lengthening of bone is 19.3% (15.8%-21.4% ), compared with normal femur on the same X ray film.
     结果骨延长组动物8周内骨延长长度为(2.82±0.94)cm,平均为伤前股骨全长的19.3%(15.8%~21.4%)。
短句来源
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  相似匹配句对
     Mode of distraction osteogenesis for callus
     延伸骨痂的骨化模式
短句来源
     Experience in Shortening of Lower Limb Lengthening by Callus Distraction
     骨痂牵拉延长治疗下肢短缩21例体会
短句来源
     Callus induction of Blackcurrant
     利用黑穗醋栗叶片、叶柄和茎段诱导愈伤组织,研究了
短句来源
     Do Research without Distraction
     老老实实做研究
短句来源
     3)Distraction osteogenesis,DO;
     3)牙槽骨牵引成骨术;
短句来源
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  callus distraction
A digital radiograph analysis system was used to determine the bone density of the callus distraction segments.
      
Blood samples and x-rays of the callus distraction segment were obtained preoperatively and once a week until day 55 after operation.
      
Lengthening of the right tibia by 25% was performed in 12 beagle dogs by callus distraction after osteotomy and application of a ring fixator.
      
The aim of the current study was to analyze the osteocalcin level and radiographic density during distraction osteogenesis in order to investigate the role of osteocalcin in monitoring bone formation during callus distraction.
      
Growth factors may have stimulated tumor growth after initiation of callus distraction.
      
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Objective To study the treatment of gunshot bone defect and the biological basis of primary shortening followed by callus distraction in situ. Methods The canine with gunshot bone defect were treated by two methods,primary shortening followed by callus distraction or delayed bone graft.The local blood flow and pathomorphological change were observed and compared with each other. Results In the experiment,the bone lengthening was stopped at the 56th day with (2 82±0 94) cm (19 3%) gain in...

Objective To study the treatment of gunshot bone defect and the biological basis of primary shortening followed by callus distraction in situ. Methods The canine with gunshot bone defect were treated by two methods,primary shortening followed by callus distraction or delayed bone graft.The local blood flow and pathomorphological change were observed and compared with each other. Results In the experiment,the bone lengthening was stopped at the 56th day with (2 82±0 94) cm (19 3%) gain in the group of bone lengthening, and the time of bone healing was much shorter in the group of bone lengthening than in the group of delayed graft. There was no significancant difference between the groups in the time of soft tissue healing and local blood flow. Conclusions The technique of primary bone lengthening is simpl and has no side effect on tissue healing and local blood flow.

目的 探讨四肢火器伤骨缺损的治疗方法和一期原位骨延长技术的生物学基础。 方法 对犬肢体火器伤骨缺损模型分别采用一期原位骨延长和传统的后期骨移植两种方法治疗,比较其骨愈合的病理过程及局部微循环血流量的变化。 结果 两组动物骨折局部血流量无显著差别。一期原位骨延长组8 周内骨延长长度为282 ±094 cm , 相对长度为193 % (158 % ~214 % ) 。其骨愈合时间明显比后期植骨组短,伤肢功能也较好。软骨内化骨是骨延长过程中主要的成骨形式。 结论 一期原位骨延长技术治疗火器伤骨缺损,在缩短疗程,简化操作等方面具有明显优越性,且对火器伤骨折的愈合过程和局部血液循环无明显不良影响。

Objective:To observe the histomorphological change of callus distraction of cortical bone.Method:The left sheep tibia was fixed by Ilizarov external fixator.Subperiosteal transverse osteotomy was performed at the diaphyseal site.Successive distraction persisted for 30 days at the rate of 1mm/day after 2 weeks delay,and radiography was taken periodically.After sacrifice,the samples of the elongation segment were observed by light and polar...

Objective:To observe the histomorphological change of callus distraction of cortical bone.Method:The left sheep tibia was fixed by Ilizarov external fixator.Subperiosteal transverse osteotomy was performed at the diaphyseal site.Successive distraction persisted for 30 days at the rate of 1mm/day after 2 weeks delay,and radiography was taken periodically.After sacrifice,the samples of the elongation segment were observed by light and polar microscope.Results:Direct osteogenesis occurred at the periosteal side in the early stage of distraction,whilst in the distraction gap,the fibrous tissue formed firstly and transformed to fibrous callus and bony callus gradually,resulting in the formation of new cortical bone ultimately.Conclusion:Successive and slow distraction after osteotomy can subject the forming callus to the axial tensile stress,which maintain and stimulate the growth of new bone and soft tissue,leading to the complete healing of osteotomized bone ends.Intramembranous may be the chief ossification mode.

对皮质骨骨痂延长骨愈合过程的组织形态学变化进行观察。方法:在山羊左胫骨中段骨膜下横形截骨后用Ilizarov式外固定器固定。2周后作牵拉延长,每天1mm,连续30天。定期摄X线片,并于截骨后1、2周,延长开始后1、2周,延长结束及结束后2、4、8、12、16周分期取材,作普通及偏光观察。结果:在骨痂延长早期,骨外膜侧即有直接骨形成,而延长间隙中先形成纤维组织,以后逐渐向纤维骨痂、骨性骨痂演变,最终形成新生皮质骨。结论:皮质骨骨干截骨后持续缓慢牵拉,对形成中的骨痂施以轴向的机械性张应力,能维持并刺激骨与软组织的再生,使截骨端间获得完全的骨愈合。其成骨方式可能以膜内骨化为主。

Objective To investigate the pathological changes of bone in situ lengthening for the gunshot bone defect, and to discuss the practical feasibility and biological basis of bone lengthening in the conditions of periosteum damage. Methods The 38 canines were randomly distributed into two groups and sustained the same gunshot bone defect in the mid femoral diaphysis. In one group, the femur were stabilized with Bastiani external fixator and 2 weeks later the fractured limb with fixation were lengthened 2-4...

Objective To investigate the pathological changes of bone in situ lengthening for the gunshot bone defect, and to discuss the practical feasibility and biological basis of bone lengthening in the conditions of periosteum damage. Methods The 38 canines were randomly distributed into two groups and sustained the same gunshot bone defect in the mid femoral diaphysis. In one group, the femur were stabilized with Bastiani external fixator and 2 weeks later the fractured limb with fixation were lengthened 2-4 times per day at a speed of 0.5-1 mm/d until the normal length was reached. The control group only had external fixation without lengthening. 3, 6 and 12 weeks after injury, the canines were given 99mTc MDP and got radionuclide examination under SPECT (ADAC company, USA.). Pathological and X ray observation were carried out at 1, 2 ,3 ,6 and 12 weeks respectively after injury for comparison between two groups. Results The X ray measurement showed that the length of callus distraction in the bone lengthening group increased by (2.82±0.94)cm and the relative lengthening of bone is 19.3% (15.8%-21.4% ), compared with normal femur on the same X ray film. The count of radionuclide increased gradually at the region of bone defect in the lengthening group. While in the fracture ends, no significant difference was found in the development pattern through each radionuclide observation phase between two groups. The main mode of osteogenesis was endochondral ossification and the bone defect area was enriched by chondrocyte in the bone lengthening group. Conclusion There are no obvious negative influence on bone turnover and local blood flow in the bone lengthening for gunshot bone defect. The remained periosteum and bone fragment under gunshot injury may have important role in the progression of osteogenesis. The neogenetic capillary provided not only blood supply for healing of bone but also source of osteocyte for bone lengthening in the case of the periosteum and blood circulation damaged with gunshot wound.

目的观察对火器伤造成的骨缺损行一期原位骨延长术治疗的病理学和影像学变化,分析在骨膜损伤条件下行骨延长术治疗骨缺损的可行性及其生物学基础。方法成年犬38只,随机分成两组,制造犬股骨火器伤骨缺损模型,对两组动物分别采用外固定器行一期原位骨延长术和单纯骨折固定术治疗,治疗全程行X线检查、病理学检查和放射性核素骨显像分析。结果骨延长组动物8周内骨延长长度为(2.82±0.94)cm,平均为伤前股骨全长的19.3%(15.8%~21.4%)。骨延长组动物骨缺损区的延迟相放射性计数逐渐增加。两组动物骨折端的延迟相和血池相变化趋势一致,其放射性计数无统计学差异。骨延长主要的成骨方式是软骨化骨。残存骨碎片可能具有成骨能力。结论残存骨膜和骨碎片在骨延长的成骨过程中有明显作用。但在骨膜损伤的条件下,骨延长技术仍可用于其骨缺损的治疗,骨折端周围组织新生血管不仅为骨愈合提供了血供,而且为其提供了骨细胞的来源。操作正确的骨延长术对骨折端血供和骨代谢无明显的不良影响。

 
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