FIXATION METHODS IN LATARJET: BIOMECHANICAL COMPARISON OF SCREW TYPES AND PLATE FIXATION.

IF 0.5 4区 医学 Q4 ORTHOPEDICS Acta Ortopedica Brasileira Pub Date : 2023-01-01 DOI:10.1590/1413-785220233102e260966
Ufuk Arzu, Mehmet Ersin, Mehmet Chodza, Koray Şahin, Önder Kiliçoğlu, Ali Erşen
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引用次数: 2

Abstract

Objective: Latarjet procedure is often preferred in recurrent shoulder dislocations accompanied by glenoid bone loss. It is observed that the superiority of bone graft fixation methods is still controversial. The aim of this study is to biomechanically compare the bone graft fixation methods in the Latarjet procedure.

Methods: 15 third-generation scapula bone models were divided into 3 groups. Graft was fixated in the first group with fully-threaded cortical screws of 3.5mm diameter, in the second group two 16 mm partially-threaded cannulated screws of 4.5mm diameter, and in the third group via a mini plate and screw. The hemispherical humeral head was placed on the tip of the cyclic charge device, and thus, the charge applied to the coracoid graft was homogeneous.

Results: No statistically significant difference was found between paired comparisons (p>0.05). The forces in 5 mm displacement in total vary between 502-857N. Total stiffness measurements ranged between 105 and 625; the mean value was 258.13±53.54 with no statistically significant difference by groups (p = 0.958).

Conclusion: This biomechanical study showed that there is no difference between three coracoid fixation options in terms of fixation strength. Unlike previous assumptions, plate fixation is not biomechanically superior to screw fixation. Surgeons should consider their personal preferences and experience in choosing fixation methods.

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斜椎弓根内固定方法:螺钉与钢板固定的生物力学比较。
目的:Latarjet手术是复发性肩关节脱位伴肩关节骨丢失的首选手术方法。观察到骨移植固定方法的优越性仍存在争议。本研究的目的是比较Latarjet手术中不同植骨固定方法的生物力学性能。方法:15只第三代肩胛骨模型分为3组。第一组使用直径3.5mm的全螺纹皮质螺钉固定移植物,第二组使用直径4.5mm的16 mm部分螺纹空心螺钉固定移植物,第三组使用微型钢板和螺钉固定移植物。半球形肱骨头放置在循环装药装置的尖端,因此,施加于喙骨移植物的装药是均匀的。结果:两两比较差异无统计学意义(p>0.05)。总位移5mm的力在502-857N之间变化。总刚度测量范围在105和625之间;平均值为258.13±53.54,组间差异无统计学意义(p = 0.958)。结论:本生物力学研究表明,三种冠状骨固定方案在固定强度方面没有差异。与先前的假设不同,钢板固定在生物力学上并不优于螺钉固定。外科医生在选择固定方法时应考虑他们的个人喜好和经验。
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来源期刊
CiteScore
0.90
自引率
14.30%
发文量
67
审稿时长
25 weeks
期刊介绍: A Revista Acta Ortopédica Brasileira, órgão oficial do Departamento de Ortopedia e Traumatologia da Faculdade de Medicina da Universidade de São Paulo (DOT/FMUSP), é publicada bimestralmente em seis edições ao ano (jan/fev, mar/abr, maio/jun, jul/ago, set/out e nov/dez) com versão em inglês disponível nos principais indexadores nacionais e internacionais e instituições de ensino do Brasil. Sendo hoje reconhecidamente uma importante contribuição para os especialistas da área com sua seriedade e árduo trabalho para as indexações já conquistadas.
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