Finite element analysis evaluation of hypothetical alternative treatment scenarios for neglected developmental dysplasia of the hip.

Cirugia y cirujanos Pub Date : 2024-01-01 DOI:10.24875/CIRU.23000137

Victor M Araujo-Monsalvo, Marcos Martínez-Cruz, Lázaro Morales-Acosta, Víctor M Domínguez-Hernández, Ramiro Cuevas-Olivo, Jesus A Carrillo-Pelaes, Javier Perez-Orive, Elisa Martinez-Coria

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Abstract

Objective: The study aimed to evaluate three different degrees of correction in the surgical treatment of neglected developmental dysplasia of the hip (DDH) using finite element models based on computed tomography.

Method: Three tridimensional FEA models of hypothetical post-operative (PO) outcomes were developed, based on three tridimensional CT of a pediatric patient diagnosed with luxated neglected DDH: One with the acetabular index of the contralateral hip (CLAT); another based on a theoretical Bombelli biomechanical model (BMB); and another recreating the patient's actual PO.

Results: The stresses in the affected hip were greater than those in the unaffected hip. CLAT showed the greatest stress and the smallest loading zone (LZ). In contrast, BMB showed the smallest stress and the biggest LZs.

Conclusions: The approach based on the BMB gave the best results in terms of the distribution of the stresses over the hip, whereas the worst was CLAT. Qualitatively, estimating the stability and range of movement of the hip, the PO case was considered the best.

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对被忽视的髋关节发育不良的假定替代治疗方案进行有限元分析评估。

研究目的该研究旨在利用基于计算机断层扫描的有限元模型，评估被忽视的髋关节发育不良（DDH）手术治疗中的三种不同矫正程度：根据一名被诊断为髋关节发育不良的小儿患者的三维CT，建立了三个假定术后（PO）结果的三维有限元分析模型：一个是对侧髋关节的髋臼指数（CLAT）；另一个是理论上的Bombelli生物力学模型（BMB）；还有一个是患者实际PO的再现：受影响髋关节的应力大于未受影响髋关节的应力。CLAT显示的应力最大，加载区（LZ）最小。相比之下，BMB 显示出最小的应力和最大的 LZ：结论：基于 BMB 的方法在髋部应力分布方面结果最好，而 CLAT 的结果最差。从髋关节稳定性和活动范围的定性评估来看，PO 方案被认为是最佳方案。

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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Cirugia y cirujanos

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