| 钢丝与不同钛缆内固定系统固定寰枢椎失稳的抗扭转生物力学比较研究 |
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Received:November 28, 2007
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| 期刊信息：《中国骨伤》2008年21卷，第8期，第570-572页 |
| DOI：doi:10.3969/j.issn.1003-0034.yyyy.nn.zzz |
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目的：比较寰枢椎不稳后路Brooks法固定技术中钢丝及不同钛缆内固定系统抗扭转生物力学性能。
方法：6例新鲜寰枢椎复合体标本(枕骨-C3).在WD-5力学试验机上，分别测量正常寰枢椎复合体(N组)、寰枢椎不稳(M组)以及不稳时行寰枢椎Brooks 法新型钛缆固定(A组)、Atlas钛缆固定(B组)、Songer钛缆固定(C组)、钢丝固定(D组)的寰枢椎复合体抗旋转刚度和强度的大小。
结果：A、B、C、D组最大扭矩分别为12.5、11.3、11.52、11.55 N·m,抗扭刚度分别为58.81、53.17、54.11、54.35 N·cm/deg,新型双向锁定式钛缆(A组)在相同锁紧拉力条件下抗扭转强度最高，同各内固定组与正常组(N组)相比差异有统计学意义(P<0.05).
结论：Brooks法钛缆固定时，新型钛缆因为锁紧方式的改变达到了比钢丝和进口钛缆更好的抗旋转固定效果。 |
| [关键词]:颈椎 寰枢关节 骨折固定术，内 生物力学 |
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| Anti-rotation biomechanical study of wire and various cable system in the posterior Brooks instrumentation for atlantoaxial instability |
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Abstract:
Objective: To compare the anti-rotation biomechanical performances of wire and various cable fixation devices currently used in the posterior Brooks instrumentation for atlantoaxial instability.
Methods: In this experiment,six specimens of the atlantoaxial complex(Occipital-C3) were used. The models of the normal complex,unstable complex(type II odontoid fracture) and fixed complex were established. On the WD-5 mechanics experimental machine,the parameters including the strength and rigidity of anti-rotation were quantified for the normal complex(group N),the atlantoaxial instability complex(group M),the new type Titanium cable (group A),Atlas titanium cable(group B),Songer Titanium cable(group C),stainless wire(group D).
Results: The max strength of A,B,C,D groups was 12.5,11.3,11.52,11.55 N·m respectively,the max rigidity was 58.81,53.17, 54.11,54.35 N·cm/deg respectively. The strength and rigidity of anti-rotation,compare to the unstable atlantoaxial complex which were fixed by the new double locking Titanium cable fixation system were superior to those of normal complex,instability complex,Songer or Atlas Titanium cable(P<0.05).
Conclusion: Having been changed the locking method,the anti-rotation biomechanical characteristics of the new type double locking Titanium cable fixation system are superior or similar to the traditional Songer or Atlas Titanium cable. |
| KEYWORDS:Cervical vertebrae Atlantoaxial joint Fracture fixation,internal Biomechanics |
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| 引用本文，请按以下格式著录参考文献： |
| 中文格式: | 刘铁龙,章允志,严望军,李家顺,袁文.钢丝与不同钛缆内固定系统固定寰枢椎失稳的抗扭转生物力学比较研究[J].中国骨伤,2008,21(8):570~572 |
| 英文格式: | LIU Tie-long,ZHANG Yun-zhi,YAN Wang-jun,LI Jia-shun,YUAN Wen.Anti-rotation biomechanical study of wire and various cable system in the posterior Brooks instrumentation for atlantoaxial instability[J].zhongguo gu shang / China J Orthop Trauma ,2008,21(8):570~572 |
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