摘要
目的通过生物力学测试,比较前交叉韧带(anterior cruciate ligament,ACL)重建术中,界面螺钉及界面螺钉结合骨隧道过线技术固定韧带胫骨端的强度差异。方法将20个新鲜冷冻猪胫骨随机分为两组(n=10),制备ACL重建模型;其中,实验组移植物采用界面螺钉结合骨隧道过线技术固定,对照组采用单纯界面螺钉固定。将两组标本固定于高频动态力学试验系统M-3000,通过往复试验及负载-失效测试,观测移植物长度变化(位移)及极限负荷、刚度。结果往复试验结果示实验组位移为(3.06±0.58)mm、对照组为(2.82±0.46)mm,差异无统计学意义(t=0.641,P=0.529)。负载-失效测试结果示,实验组和对照组刚度分别为(95.39±13.63)、(91.38±14.28)N/mm,差异无统计学意义(t=1.021,P=0.321);实验组极限负荷为(743.15±173.96)N,高于对照组(574.70±74.43)N,差异有统计学意义(t=2.648,P=0.016)。结论 ACL重建术中界面螺钉结合骨隧道过线技术固定胫骨端的强度明显优于单纯界面螺钉。
Objective To compare the strength difference between the interfacial screw and the interfacial screw combined with bone tunnel crossing technology to fix the tibial end of ligament during anterior cruciate ligament(ACL)reconstruction through the biomechanical test. Methods Twenty fresh frozen pig tibia were randomly divided into two groups(n=10) to prepare ACL reconstruction models. The graft tendons in the experimental group were fixed with interfacial screw combined with bone tunnel crossing technology, and the graft tendons in the control group were fixed with interfacial screw. The two groups of specimens were fixed in the high-frequency dynamic mechanics test system M-3000, and the length change(displacement), ultimate load, and stiffness of graft tendons were measured through the reciprocating test and load-failure test. Results The results of reciprocating test showed that the displacement of the experimental group was(3.06±0.58) mm, and that of the control group was(2.82±0.46) mm, and there was no significant difference between the two groups(t=0.641, P=0.529). The load-failure test results showed that the stiffness of the experimental group and the control group were(95.39±13.63) and(91.38±14.28) N/mm, respectively, with no significant difference(t=1.021, P=0.321). The ultimate load of the experimental group was(743.15±173.96) N, which was significantly higher than that of the control group(574.70±74.43) N(t=2.648, P=0.016). Conclusion In ACL reconstruction, the fixation strength of tibial end with interface screw combined with bone tunnel crossing technology is obviously better than that of interface screw alone.
作者
孙睿
庄雷霆
段茗一
刘蕈萁
张杭州
SUN Rui;ZHUANG Leiting;DUAN Mingyi;LIU Xunqi;ZHANG Hangzhou(Department of Orthopedics-Sports Medicine/Joint Surgery,First Affiliated Hospital of China Medical University,Shenyang Liaoning,110000,P.R.China)
出处
《中国修复重建外科杂志》
CAS
CSCD
北大核心
2021年第10期1298-1302,共5页
Chinese Journal of Reparative and Reconstructive Surgery
基金
辽宁省自然科学基金计划项目(2019-MS-377)。
关键词
前交叉韧带
韧带重建
界面螺钉
骨隧道过线技术
生物力学
Anterior cruciate ligament
ligament reconstruction
interface screw
bone tunnel crossing technology
biomechanics
