| 尺骨假关节成形术尺桡骨的生物力学变化 |
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| 引用本文： | 谢小平,杨志明.尺骨假关节成形术尺桡骨的生物力学变化[J].川北医学院学报,2002,17(2):6-9. |
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| 作者姓名： | 谢小平 杨志明 |
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| 作者单位： | 1. 四川省宜宾市第二人民医院骨科,四川,宜宾,644000
2. 四川大学华西医院骨科,四川,成都,610041 |
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| 摘 要： | 目的了解尺骨假关节成形术对尺桡骨应力的影响。方法用新鲜尸体上肢标本 9只 ,于尺桡骨远端背侧骨表面粘贴应变片 ,在前臂中立位 ,旋前和旋后 40°位 ,应用动态加载方法研究其应力变化。结果尺骨假关节成形术后 ,尺骨切骨远端应力升高 (P <0 0 5 )。桡骨远端应力无变化 (P >0 0 5 )。术后桡骨承受的轴向压力显著升高。结论尺骨假关节成形术在改善前臂旋转功能和稳定腕关节的同时 ,可能对肱桡关节造成不利影响 ,临床上值得重视
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| 关 键 词： | 生物力学 尺骨 桡骨 假关节 |
| 文章编号： | 1005-3697(2002)02-0006-03 |
| 修稿时间： | 2002年2月24日 |
Biomechanical changes of ulna and radius after artificial pseudarthrosis of distal ulna |
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| XEI Xiao-ping ,YANG Zhi-ming.Biomechanical changes of ulna and radius after artificial pseudarthrosis of distal ulna[J].Journal of North Sichuan Medical College,2002,17(2):6-9. |
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| Authors: | XEI Xiao-ping YANG Zhi-ming |
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| Institution: | XEI Xiao-ping 1,YANG Zhi-ming 2 |
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| Abstract: | Objective:To acquir the changes of stresses on distal ulna and radius after cration of a pseudarthrosis of the distal ulna. Methods:The Biomechanical changes of nine fresh cadaveic apper ertremities were observed under continuous loading and 40°of pronation and supination.Results:After the operation of the pseudarthrosis, the stresses on the distal end of the ulna was incrased in the three positions (P<0 05),and the stresses on the distal end of the radius showed no changes in the three positions(P>0 05). The axial pressure borne by the radius was increased prominently. Conclusion:the artificial pseudarthrosis of the distal ulna could improve the rotation of the forearm, and lize the wrist joint. but also have a disadvantageous influence upon the brachioradialis joint. |
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| Keywords: | Biomechanics Ulna Radius Pseudarthrosis |
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