摘要
目的:研究改进一种新型髌骨导向器,并通过实验研究行对该导向器的应用前景进行评价分析。方法:力学实验方面,利用生物力学机对两代髌骨导向器进行拉力测试,分析在相同张力下二者间的形变差异;在尸体实验中,截取无病变新鲜冰冻尸体上膝关节20个,建立髌骨横行骨折模型作为研究对象进行实验研究,随机分为两组,试验组用2代导向器,对照组不用导向器,对其临床应用前景进行评价分析。结果:在实验研究中,相同张力下,一代髌骨骨折导向器位移大于二代髌骨骨折导向器,差异有统计学意义;在提高置针位置准确性方面差异有统计学意义,试验组优于对照组(P<0.05)。结论:髌骨骨折克氏针导向器设计合理,可以提高手术操作准确性,明显减少手术时间,具有临床应用前景,且新一代改良髌骨导向器效果更佳。
Objective To develop a newly designed guide and evaluate its clinic application prospect in treatment of patella fracture. Methods In our mechanical experiment, we carried out the tensile test of the two generation drilling guides by biomeehanics machine and then analyzed the difference in their deformation. In the corpse experiment, we transversed fractures at the equator of the patella obtained from 10 fresh cadaver speci- mens. They were divided into 2 groups randomly： a test group and a control group. The second-generation of the aiming guide was used for the test group but not for the control group during the experiment. Then we evaluated its clinic application in the treatment of patella fracture. Results In the mechanical experiment, the displace- ment of the first generation guide was significantly larger than that of the newly one. The accuracy in the place- ment of k-wires by the second generation guide was significantly higher than by the first generation guide （P 〈 0.05 ）. Conclusions The drilling guide is reasonable in design and convenient in use. Moreover, it can improve the accuracy and quality of insertion of tension-band wiring of patellar fractures. The second-generation one is better and thus it is worth clinically spreading.
出处
《实用医学杂志》
CAS
北大核心
2016年第13期2153-2157,共5页
The Journal of Practical Medicine
基金
北京市级首都特色临床应用研究项目(编号:Z141107002514067)
专利课题(专利号:201020575985.8)
关键词
髌骨骨折
克氏针导向器:
实验研究
Patellar fracture
K-wire drilling guide
Experimental study
