Biomechanical Evaluation of Different Fixation Methods for Percutaneous Extracapsular Transverse Cervical Metatarsal Osteotomy in a Hallux Valgus Sawbone Model.

Foot & Ankle Orthopaedics Pub Date : 2024-12-13 eCollection Date: 2024-10-01 DOI:10.1177/24730114241303768
Pablo Wagner, Emilio Wagner, Miguel Pinochet, David Salinas, Peter Lam
{"title":"Biomechanical Evaluation of Different Fixation Methods for Percutaneous Extracapsular Transverse Cervical Metatarsal Osteotomy in a Hallux Valgus Sawbone Model.","authors":"Pablo Wagner, Emilio Wagner, Miguel Pinochet, David Salinas, Peter Lam","doi":"10.1177/24730114241303768","DOIUrl":null,"url":null,"abstract":"<p><strong>Background: </strong>There is limited literature available that provide information about fixation methods for minimally invasive hallux valgus osteotomies. Our objective was to evaluate the strength of different fixation methods for a percutaneous extracapsular transverse cervical metatarsal (PTCM) osteotomy in a sawbone model.</p><p><strong>Methods: </strong>Thirty solid foam sawbone foot models were used. Percutaneous extracapsular transverse cervical metatarsal osteotomies were performed and fixed in a standardized fashion in 6 different groups: (1) one 4.0-mm screw; (2) 2 (one 4.0-mm and one 3.0-mm) parallel screws; (3) 2 (one 4.0-mm and one 3.0-mm) divergent screws; (4) same as group 3, but with lateral metatarsal head cortex purchase with the 4.0-mm screw; (5) same as group 4, but with two 4.0-mm screws; (6) same as group 5, but with two 3.5-mm screws. Cyclic and load to failure testing were performed applying a plantar load to the metatarsal head. The measured variables were stiffness and force needed to create deformity using a Zwick Roell Universal Testing Machine.</p><p><strong>Results: </strong>Group 1 failed as a result of rotational instability in cyclic testing. In load to failure testing, group 3 did not achieve difference compared with group 2 (<i>P</i> = .09) (181 vs 131 N). Group 4 was stronger (<i>P</i> = .02) (250 N) than groups 1-3. Group 5 did not show differences relative to group 4 (<i>P</i> = .1) (223 N). Group 6 was stronger only than groups 1 and 2 (<i>P</i> = .01) (193 N).</p><p><strong>Conclusion: </strong>In this sawbones-based study, we found that the use of two 4.0-mm screws or use of a 3.0-mm screw and a 4.0-mm screw with lateral first metatarsal head cortical purchase was superior to other screw configurations.</p>","PeriodicalId":12429,"journal":{"name":"Foot & Ankle Orthopaedics","volume":"9 4","pages":"24730114241303768"},"PeriodicalIF":0.0000,"publicationDate":"2024-12-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11645780/pdf/","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Foot & Ankle Orthopaedics","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1177/24730114241303768","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"2024/10/1 0:00:00","PubModel":"eCollection","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 0

Abstract

Background: There is limited literature available that provide information about fixation methods for minimally invasive hallux valgus osteotomies. Our objective was to evaluate the strength of different fixation methods for a percutaneous extracapsular transverse cervical metatarsal (PTCM) osteotomy in a sawbone model.

Methods: Thirty solid foam sawbone foot models were used. Percutaneous extracapsular transverse cervical metatarsal osteotomies were performed and fixed in a standardized fashion in 6 different groups: (1) one 4.0-mm screw; (2) 2 (one 4.0-mm and one 3.0-mm) parallel screws; (3) 2 (one 4.0-mm and one 3.0-mm) divergent screws; (4) same as group 3, but with lateral metatarsal head cortex purchase with the 4.0-mm screw; (5) same as group 4, but with two 4.0-mm screws; (6) same as group 5, but with two 3.5-mm screws. Cyclic and load to failure testing were performed applying a plantar load to the metatarsal head. The measured variables were stiffness and force needed to create deformity using a Zwick Roell Universal Testing Machine.

Results: Group 1 failed as a result of rotational instability in cyclic testing. In load to failure testing, group 3 did not achieve difference compared with group 2 (P = .09) (181 vs 131 N). Group 4 was stronger (P = .02) (250 N) than groups 1-3. Group 5 did not show differences relative to group 4 (P = .1) (223 N). Group 6 was stronger only than groups 1 and 2 (P = .01) (193 N).

Conclusion: In this sawbones-based study, we found that the use of two 4.0-mm screws or use of a 3.0-mm screw and a 4.0-mm screw with lateral first metatarsal head cortical purchase was superior to other screw configurations.

外翻锯骨模型经皮颈横跖骨囊外截骨术不同固定方法的生物力学评价。
背景:提供微创拇外翻截骨固定方法的文献有限。我们的目的是在锯骨模型中评估经皮囊外颈横跖骨截骨术(PTCM)不同固定方法的强度。方法:采用固体泡沫锯骨足模型30例。采用经皮囊外颈横跖骨截骨术,按标准方式固定6组:(1)1枚4.0 mm螺钉;(2) 2个(1个4.0-mm和1个3.0-mm)平行螺钉;(3) 2个(1个4.0-mm和1个3.0-mm)发散螺钉;(4)与3组相同,但采用4.0 mm螺钉固定外侧跖头皮质;(5)与组4相同,但增加2颗4.0 mm螺钉;(6)与第5组相同,但增加了两个3.5 mm螺钉。对跖骨头施加足底负荷,进行循环和负荷失效试验。测量的变量是使用Zwick Roell万能试验机产生畸形所需的刚度和力。结果:1组在循环试验中因旋转失稳而失败。在负荷失效测试中,第3组与第2组无差异(P = 0.09) (181 vs 131 N),第4组比第1-3组强(P = 0.02) (250 N)。第5组与第4组没有差异(P = 0.1) (223 N)。第6组仅比第1组和第2组强(P = 0.01) (193 N)。结论:在这项基于锯骨的研究中,我们发现使用两枚4.0 mm螺钉或使用一枚3.0 mm螺钉和一枚4.0 mm螺钉与外侧第一跖骨头皮质购买优于其他螺钉配置。
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
Foot & Ankle Orthopaedics
Foot & Ankle Orthopaedics Medicine-Orthopedics and Sports Medicine
CiteScore
1.20
自引率
0.00%
发文量
1152
×
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