Novel hook plate for radial semilunar lip facet fragment fixation: a finite element analysis.

IF 2.2 3区 医学 Q2 ORTHOPEDICS
Leonardo Rigobello Battaglion, Henrique de Barros Pinto Netto, Ana Paula Macedo, Jose Batista Volpon, Antonio Carlos Shimano
{"title":"Novel hook plate for radial semilunar lip facet fragment fixation: a finite element analysis.","authors":"Leonardo Rigobello Battaglion, Henrique de Barros Pinto Netto, Ana Paula Macedo, Jose Batista Volpon, Antonio Carlos Shimano","doi":"10.1186/s12891-024-08011-x","DOIUrl":null,"url":null,"abstract":"<p><p>Intra-articular fractures of the distal radius require anatomical reduction and stable fixation. When the fracture encompasses the articular facet of the bone, maintaining the reduction is challenging due to the fragment's size and high instability. While specific implants have been developed to fix this fragment, their effectives have been limited. This study evaluates the mechanical performance of a novel hook plate conceived to stabilize the small fragment of the semilunar facet of the radius in non-osteoporotic bones. A simulated lunate facet fracture was created in an adult radius in a virtual model, and a modification of a hook plate was developed using computer-aided design (CAD). Two groups were established for the finite element method (FEM) simulation: a control group (standard plate Medartis™ (Switzerland, A-5500.23) and an angled plate with hooks set at 60º, 90º and 120º. In the FEM simulation, an axial load of 100 N was applied in the Z-axis direction on the fragment. Fracture displacement along the Z axis was more pronounced in the control model (0.32 mm) and less in the angled models, ranging from 0.22 to 0.28 mm. Notably, the plate with a 90° angle showed a more effective reduction in fragment displacement. The distribution of stresses in the system showed the highest levels of stress in the control group (59.31 MPa), followed by the subgroup with a 60° angle (55.78 MPa).In the side view, the control model showed a higher concentration of stresses (59.74 MPa), while the model with a 90° angle showed a lower value of stresses (18.87 MPa). Critical stress regions were identified in the bolts of the control and 120° models (59.47 MPa and 57.64 MPa, respectively). However, in the 90° model, no critical regions were observed in the bolts, which showed lower stress values, reaching 26.33 MPa. In the bone, the greatest concentration of stress occurred in the region where the plate was anchored. Our results showed that the 90° hook plate had a superior mechanical performance in fixing simulate lunate facet fractures at the distal radius. This angle led to minor displacements and minimized stress concentrations in the hardware, thus contributing to enhance the stability of this specific fracture.</p>","PeriodicalId":9189,"journal":{"name":"BMC Musculoskeletal Disorders","volume":null,"pages":null},"PeriodicalIF":2.2000,"publicationDate":"2024-11-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11539762/pdf/","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"BMC Musculoskeletal Disorders","FirstCategoryId":"3","ListUrlMain":"https://doi.org/10.1186/s12891-024-08011-x","RegionNum":3,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"ORTHOPEDICS","Score":null,"Total":0}
引用次数: 0

Abstract

Intra-articular fractures of the distal radius require anatomical reduction and stable fixation. When the fracture encompasses the articular facet of the bone, maintaining the reduction is challenging due to the fragment's size and high instability. While specific implants have been developed to fix this fragment, their effectives have been limited. This study evaluates the mechanical performance of a novel hook plate conceived to stabilize the small fragment of the semilunar facet of the radius in non-osteoporotic bones. A simulated lunate facet fracture was created in an adult radius in a virtual model, and a modification of a hook plate was developed using computer-aided design (CAD). Two groups were established for the finite element method (FEM) simulation: a control group (standard plate Medartis™ (Switzerland, A-5500.23) and an angled plate with hooks set at 60º, 90º and 120º. In the FEM simulation, an axial load of 100 N was applied in the Z-axis direction on the fragment. Fracture displacement along the Z axis was more pronounced in the control model (0.32 mm) and less in the angled models, ranging from 0.22 to 0.28 mm. Notably, the plate with a 90° angle showed a more effective reduction in fragment displacement. The distribution of stresses in the system showed the highest levels of stress in the control group (59.31 MPa), followed by the subgroup with a 60° angle (55.78 MPa).In the side view, the control model showed a higher concentration of stresses (59.74 MPa), while the model with a 90° angle showed a lower value of stresses (18.87 MPa). Critical stress regions were identified in the bolts of the control and 120° models (59.47 MPa and 57.64 MPa, respectively). However, in the 90° model, no critical regions were observed in the bolts, which showed lower stress values, reaching 26.33 MPa. In the bone, the greatest concentration of stress occurred in the region where the plate was anchored. Our results showed that the 90° hook plate had a superior mechanical performance in fixing simulate lunate facet fractures at the distal radius. This angle led to minor displacements and minimized stress concentrations in the hardware, thus contributing to enhance the stability of this specific fracture.

用于径向半月唇面碎片固定的新型钩状钢板:有限元分析。
桡骨远端关节内骨折需要解剖复位和稳定固定。当骨折覆盖骨的关节面时,由于骨折片的大小和高度不稳定性,保持复位具有挑战性。虽然已开发出固定这种骨折片的特定植入物,但其效果有限。本研究评估了一种新型钩板的机械性能,这种钩板是为稳定非骨质疏松骨骼的桡骨半月面小碎片而设计的。在虚拟模型中创建了成人桡骨半月面骨折的模拟模型,并使用计算机辅助设计(CAD)开发了钩状钢板的改型。有限元法(FEM)模拟分为两组:对照组(标准钢板 Medartis™(瑞士,A-5500.23))和带弯钩的钢板(弯钩设置在 60º、90º 和 120º)。在有限元模拟中,沿 Z 轴方向对碎片施加 100 N 的轴向载荷。沿 Z 轴的断裂位移在对照模型中更为明显(0.32 毫米),而在倾斜模型中则较小,从 0.22 毫米到 0.28 毫米不等。值得注意的是,90° 角的钢板能更有效地减少碎片位移。系统中的应力分布显示,对照组的应力水平最高(59.31 兆帕),其次是角度为 60° 的子组(55.78 兆帕)。在侧视图中,对照模型显示出较高的应力集中度(59.74 兆帕),而角度为 90° 的模型显示出较低的应力值(18.87 兆帕)。在控制模型和 120° 模型的螺栓中发现了临界应力区域(分别为 59.47 兆帕和 57.64 兆帕)。然而,在 90° 模型中,没有在螺栓中观察到临界区域,其应力值较低,仅为 26.33 兆帕。在骨骼中,最大的应力集中发生在钢板锚定区域。我们的研究结果表明,在固定模拟桡骨远端新月面骨折时,90° 钩形钢板具有更优越的机械性能。这一角度导致了较小的位移,并最大限度地减少了硬件中的应力集中,从而有助于提高这种特殊骨折的稳定性。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
求助全文
约1分钟内获得全文 求助全文
来源期刊
BMC Musculoskeletal Disorders
BMC Musculoskeletal Disorders 医学-风湿病学
CiteScore
3.80
自引率
8.70%
发文量
1017
审稿时长
3-6 weeks
期刊介绍: BMC Musculoskeletal Disorders is an open access, peer-reviewed journal that considers articles on all aspects of the prevention, diagnosis and management of musculoskeletal disorders, as well as related molecular genetics, pathophysiology, and epidemiology. The scope of the Journal covers research into rheumatic diseases where the primary focus relates specifically to a component(s) of the musculoskeletal system.
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
确定
请完成安全验证×
copy
已复制链接
快去分享给好友吧!
我知道了
右上角分享
点击右上角分享
0
联系我们:info@booksci.cn Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术官方微信