| 外固定器在体轴向加压骨断端压力长期变化的实验研究 |
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Received:March 17, 2005
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| 作者 | Author | 单位 | Unit | E-Mail |
| 范里 |
FAN Li |
武汉大学人民医院骨科,湖北武汉430060 |
Department of Orthopaedics,the People′s Hospital of Wuhan University,Wuhan 430060,Hubei,China |
Fanli70@tom.com |
| 唐新宇 |
TANG Xin-yu |
深圳中心医院骨科 |
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| 李家元 |
LI Jia-yuan |
武汉大学人民医院骨科,湖北武汉430060 |
Department of Orthopaedics,the People′s Hospital of Wuhan University,Wuhan 430060,Hubei,China |
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| 胡佑伦 |
HU You-lun |
清丰县人民医院针灸科,河南清丰457300 |
Department of Orthopaedics,the People′s Hospital of Wuhan University,Wuhan 430060,Hubei,China |
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| 刘世清 |
LIU Shi-qing |
清丰县人民医院针灸科,河南清丰457300 |
Department of Orthopaedics,the People′s Hospital of Wuhan University,Wuhan 430060,Hubei,China |
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| 期刊信息：《中国骨伤》2006年19卷，第1期，第28-30页 |
| DOI：doi:10.3969/j.issn.1003-0034.yyyy.nn.zzz |
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目的:定量分析外固定器在体轴向加压时不同加压量、不同时期骨断端压力变化规律。
方法:建立在体骨轴向加压断端压力测试动物模型,27只大耳白兔随机分为A、B、C三组,并分别加载1.5、1、0.5倍动物体重,以应变片为传感器,测量固定针应变。定标后15d内每日测量固定针应变变化并转化为骨断端压力。
结果:外固定器轴向加压15d内在体骨断端压力持续下降,第15天在体骨断端压力剩余百分率:A组96%;B组96%;C组98%。
结论:外固定器轴向加压15d内在体骨断端压力持续衰减,且衰减幅度逐渐减少;15d左右趋于稳定(≥额定压力的95%)。 |
| [关键词]:外固定器 轴向加压 应变 |
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| Experimental study on variation of pressure on fracture point pressed axially by external fixator in vivo |
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Abstract:
Objective: To design the method of measuring pressure on fracture site and quantitatively analyse the variation of pressure with different axial pressure at different time in vivo.
Methods:The model was set up to measure the pressure on fracture point.27 rabbits were randomly divided into three groups(group A,B and C)and the axial pressure were 1.5,1,0.5 times of the rabbits′ weight respectively.The "strain voltage-pressure curves" were calculated and the strain voltage was continually measured for 15 days.The results of strain voltage were transformed into the pressure on fracture point using the "strain voltage-pressure curves".
Results:The pressure on fracture site in vivo kept declining in 15 days when the bones were pressed axially with extermal fixators.The surplus pressure on fracture point in vivo after 15 days was 96%,96%,98% respectively.
Conclusion:The strain measurement of external fixator could be used in measuring fracture point pressure in vivo.The pressure on fracture point in vivo declined continually by pressing axially with external fixators.The heavier pressed,the faster declined,and it would be stabilized on fifteenth days. |
| KEYWORDS:External fixatror Press axially Strain |
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| 引用本文，请按以下格式著录参考文献： |
| 中文格式: | 范里,唐新宇,李家元,胡佑伦,刘世清.外固定器在体轴向加压骨断端压力长期变化的实验研究[J].中国骨伤,2006,19(1):28~30 |
| 英文格式: | FAN Li,TANG Xin-yu,LI Jia-yuan,HU You-lun,LIU Shi-qing.Experimental study on variation of pressure on fracture point pressed axially by external fixator in vivo[J].zhongguo gu shang / China J Orthop Trauma ,2006,19(1):28~30 |
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