个性化Ti6Al4V沟面胫骨骨折固定钢板的力学分析

IF 1.6 Q4 ENGINEERING, BIOMEDICAL Biosurface and Biotribology Pub Date : 2021-08-12 DOI:10.1049/bsb2.12019
Bo Liao, Jipeng Sun, Cheng Xu, Rufeng Xia, Wei Li, Dong Lu, Zhongmin Jin
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引用次数: 2

摘要

骨板与人骨之间的形状匹配度低,应力屏蔽率高,不利于骨折的初步愈合。本研究以人体胫骨下1 / 3骨折部位为应用案例,设计了6种带凹槽表面的个性化Ti6Al4V胫骨钢板,并通过逆向工程和有限元分析对其进行了评价。结果表明,沟槽设计可以降低骨板的应力屏蔽率,促进骨折愈合。在6种骨板中,OUT-MI型骨板的应力屏蔽率最低,应力分布最均匀。同时,随着恢复期胫骨负荷的增大,胫骨骨折面平均应力和最大轴向位移增大,可有效促进胫骨骨折区骨再生。此外,“OUT-MI”接骨板与“STR-BE”接骨板的四点弯曲性能无显著差异,表明该接骨板的力学性能可靠。研究结果为临床治疗中骨折固定钢板的设计提供了理论依据。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

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A mechanical study of personalised Ti6Al4V tibial fracture fixation plates with grooved surface by finite element analysis

Low shape matching and high stress shielding rates between bone plate and human bone are not conducive to the primary healing of fracture. In this study, taking the fracture site of the lower one-third of human tibia as an application case, six types of personalised Ti6Al4V tibial plates with grooved surface were designed and evaluated by reverse engineering and finite element analysis. The results showed that the grooved design can reduce the stress shielding rate of bone plate and promote the facture healing. Among the six types of bone plates, the ‘OUT-MI’ bone plate has the lowest stress shielding rate and the most uniform stress distribution. Meanwhile, with the increasing tibial load during the convalescence, the average stress and maximum axial displacement of the tibial fracture surface increased, which can effectively improve the bone regeneration in the tibial fracture area. Moreover, there was no significant difference in four-point bending performance between the ‘OUT-MI’ bone plate and the ‘STR-BE’ bone plate, indicating that the mechanical properties of this bone plate were reliable. The results provide a theoretical basis for the design of fracture fixation plates on clinical treatment.

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来源期刊
Biosurface and Biotribology
Biosurface and Biotribology Engineering-Mechanical Engineering
CiteScore
1.70
自引率
0.00%
发文量
27
审稿时长
11 weeks
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