水平带状钢板治疗胫骨平台后外侧象限骨折的生物力学研究

胡孙君; 张世民; 李双; 杜守超; 马卓; 熊文峰; 张英琪

doi:10.13418/j.issn.1001-165x.2018.01.017

中国临床解剖学杂志 ›› 2018, Vol. 36 ›› Issue (1) : 77-81. DOI: 10.13418/j.issn.1001-165x.2018.01.017

临床生物力学

水平带状钢板治疗胫骨平台后外侧象限骨折的生物力学研究

胡孙君，　张世民，　李双，　杜守超，　马卓，　熊文峰，　张英琪

作者信息 +

Horizontal belt plate fixation for treating the isolated posterolateral tibial plateau fracture：a biomechanical study

HU Sun-jun，ZHANG Shi-min，LI Shuang，DU Shou-chao, MA Zhuo，XIONG Wen-feng, ZHANG Ying-qi

Author information +

文章历史 +

摘要

目的　比较胫骨平台后外侧象限骨折不同内固定方式的力学稳定性效果。方法　采用Synbone人工合成胫骨18个，切割构建孤立的胫骨平台后外侧象限骨折模型，随机分为3组，分别采用外侧水平带状钢板固定、外侧低切迹解剖锁定钢板固定、后侧直形重建钢板固定。将固定好的骨折模型置于万能水压材料测试机进行测试，分别进行静态加载、疲劳测试和极限加载，检测骨块的相对空间位移。结果　以10 mm/min加载至总载荷1050 N，重复加载10000次后，带状钢板组骨折块的纵向位移(2.77±1.79) mm，外侧锁定钢板组的纵向位移为(2.69±1.14) mm；后方重建钢板组骨折块的纵向位移为(1.62±0.60) mm，组间差异无统计学意义（P>0.05）。施加载荷到骨或内固定的结构破坏后，带状钢板组的极限支撑力为(2055±263) N，外侧锁定钢板组的为（1968±209）N，后方重建钢板组的极限支撑力为(2272±130) N，组间差异具有显著的统计学意义（P<0.05）。结论　治疗孤立的胫骨平台后外侧象限骨折，侧方带状钢板水平固定能取得满意的效果。

Abstract

Objective　To compare and analyze the biomechanical stability of 3 different fixations for the posterolateral tibial plateau fracture.　Methods　The posterolateral shearing fracture models were created in 18 synthetic tibia(Synbone) and randomly assigned into 3 groups．The fractures were fixed by horizontal belt plate (Group A), lateral low-profile anatomical LCP (Group B) and posterior reconstructive plate(Group C). Vertical displacements of the posterolateral fragments and failure loads were measured under axial loads including static loading test (from 300 N to 1050 N), fatigue loading test and damage loading teat. Results 　The vertical displacements in groups A，B，and C were respectively (2.77±1.79)mm, (2.69±1.14)mm, and (1.62±0.60)mm under fatigue loading test, the total load 1050N with 10 mm/min and repeat load 10000 times．There was no significant difference between the groups (P>0.05). After the damage loading test, the final force in groups A，B，and C were respectively (2055±263) N, (1968±209) N and (2272±130) N, and there was significant difference among the groups (P<0.05).　Conclusion　Horizontal belt plate fixation for isolated posterolateral tibial plateau fracture can bring sufficient stability for the posterolateral fragment.

导出引用

胡孙君,张世民,李双,杜守超,马卓,熊文峰,张英琪. 水平带状钢板治疗胫骨平台后外侧象限骨折的生物力学研究[J]. 中国临床解剖学杂志. 2018, 36(1): 77-81 https://doi.org/10.13418/j.issn.1001-165x.2018.01.017

HU Sun-jun，ZHANG Shi-min，LI Shuang，DU Shou-chao, MA Zhuo，XIONG Wen-feng, ZHANG Ying-qi. Horizontal belt plate fixation for treating the isolated posterolateral tibial plateau fracture：a biomechanical study[J]. Chinese Journal of Clinical Anatomy. 2018, 36(1): 77-81 https://doi.org/10.13418/j.issn.1001-165x.2018.01.017

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