新型弹性固定治疗胫骨髁间嵴骨折的实验研究
1.中国人民解放军第980医院骨二科
2.中国人民解放军总医院骨科
3.中国人民解放军92196部队
4.中国人民解放军第984医院骨科
Biomechanical Study of a New Elastic Fixation for Tibial Eminence Fracture
1.Second Department of Orthopaedics,Chinese PLA 980 Hospital
2.Department of Orthopaedics,Chinese PLA General Hospital
3.Department of Orthopaedics,Chinese PLA 92196 Troops
摘要 目的 探讨新型缝线网状套扎弹性固定胫骨髁间嵴骨折的生物力学性能。方法 取新鲜猪膝关节标本16个,制备Ⅲ型胫骨髁间嵴骨折模型,随机分为两组,每组各8个,分别采用缝线网状套扎固定(A组)和缝合锚钉固定(B组)。通过疲劳试验及拔出试验,分析比较两组最大失败载荷、失效载荷、拔出刚度及循环位移。结果 失败模式:A组位移超限8个;B组锚钉拔出4个,缝线断裂2个,缝线切割骨块2个。生物力学结果显示,最大失败载荷及失效载荷:A组(517.798 N,247.841 N)>B组(247.469 N,123.254 N),两组比较差异有统计学意义(P=0.001);循环位移:A组(2.316 mm)<B组(5.423 mm),两组比较差异有统计学意义(P=0.001);拔出刚度:A组(40.062 N/mm)>B组(35.699 N/mm),两组比较差异无统计学意义(P=0.386)。结论 缝线网状套扎固定法生物力学性能优于缝合锚钉固定法,能够满足术后早期功能锻炼的要求。
关键词 :
胫骨髁间嵴骨折 ,
高强度缝线 ,
弹性固定 ,
生物力学 ,
猪
Abstract :Objective To study the biomechanical stability of Reticular Loop Ligature Fixation.Methods 16 fresh porcine knee joints were involved in this experiment.After the fracture model was made in uniform size,all samples were randomly divided into two groups:reticular loop ligature group(A) and suture anchor group(B),eight cases in each group.Biomechanical tests were made on universal electromagnetic.Each specimen firstly underwent fatigue test,then pull-out test until failure.The maximum failure load,yield load,stiffness and displacement were analyzed.Results Failure Mode:All of the 8 cases of A group went beyond the displacement limit,B group suture anchor pull-out 4 cases,suture rupture 2 cases,thread cutting 2 case.Biomechanical test:The maximum failure load and yield load:A (517.798 N,247.841 N)>B (247.469 N,123.254 N).These differences were statistically significant(P=0.001).The displacements:A (2.316 mm) <B (5.423 mm).These differences were statistically significant(P=0.001).The stiffness:A (40.062 N/mm) > B (35.699 N/mm),the differences of stiffness between the three groups had no statistically significance(P=0.386).Conclusion Compared with suture anchor,Reticular Loop Ligature Fixation has better biomechanical performance and can meet the requirement of early post-operative exercise.
Key words :
tibial eminence fracture
high strength suture
elastic fixation
biomechanics
porcine
基金资助: 河北省重点科技研究基金项目(20170958)
通讯作者:
刘玉杰
作者简介 : 王江涛(1982- ),男,主治医师,中国人民解放军第980医院骨二科,050000。
引用本文:
王江涛 1,2,步建立 1,常晗 3,滕立佳 4,钱宇航 1,周勇 1,车建伟 1,罗涛 1,孙成 1,刘玉杰 2*. 新型弹性固定治疗胫骨髁间嵴骨折的实验研究[J]. 实用骨科杂志, 2021, 27(1): 40-43.
Wang Jiangtao 1,2,Bu Jianli 1,Chang Han 3,et al. Biomechanical Study of a New Elastic Fixation for Tibial Eminence Fracture. sygkzz, 2021, 27(1): 40-43.
链接本文:
http://www.sygkzz.com/CN/ 或 http://www.sygkzz.com/CN/Y2021/V27/I1/40
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