Exploring uncertainty in hyper-viscoelastic properties of scalp skin through patient-specific finite element models for reconstructive surgery.

IF 1.7 4区 医学 Q3 COMPUTER SCIENCE, INTERDISCIPLINARY APPLICATIONS
Gyohyeon Song, Arun K Gosain, Adrian Buganza Tepole, Kyehan Rhee, Taeksang Lee
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引用次数: 0

Abstract

Understanding skin responses to external forces is crucial for post-cutaneous flap wound healing. However, the in vivo viscoelastic behavior of scalp skin remains poorly understood. Personalized virtual surgery simulations offer a way to study tissue responses in relevant 3D geometries. Yet, anticipating wound risk remains challenging due to limited data on skin viscoelasticity, which hinders our ability to determine the interplay between wound size and stress levels. To bridge this gap, we reexamine three clinical cases involving scalp reconstruction using patient-specific geometric models and employ uncertainty quantification through a Monte Carlo simulation approach to study the effect of skin viscoelasticity on the final stress levels from reconstructive surgery. Utilizing the generalized Maxwell model via the Prony series, we can parameterize and efficiently sample a realistic range of viscoelastic response and thus shed light on the influence of viscoelastic material uncertainty in surgical scenarios. Our analysis identifies regions at risk of wound complications based on reported threshold stress values from the literature and highlights the significance of focusing on long-term responses rather than short-term ones.

通过用于重建手术的患者特定有限元模型,探索头皮皮肤超弹性特性的不确定性。
了解皮肤对外力的反应对于皮瓣术后伤口愈合至关重要。然而,人们对头皮皮肤的体内粘弹性行为仍然知之甚少。个性化虚拟手术模拟为研究相关三维几何形状的组织反应提供了一种方法。然而,由于有关皮肤粘弹性的数据有限,我们无法确定伤口大小和应力水平之间的相互作用,因此预测伤口风险仍然具有挑战性。为了弥补这一差距,我们使用患者特定的几何模型重新审查了三个涉及头皮重建的临床病例,并通过蒙特卡罗模拟方法进行不确定性量化,以研究皮肤粘弹性对重建手术最终应力水平的影响。通过普罗尼序列利用广义麦克斯韦模型,我们可以对粘弹性响应的现实范围进行参数化和高效采样,从而揭示粘弹性材料不确定性在手术场景中的影响。我们的分析根据文献报道的阈值应力值确定了伤口并发症的风险区域,并强调了关注长期响应而非短期响应的重要性。
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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来源期刊
CiteScore
4.10
自引率
6.20%
发文量
179
审稿时长
4-8 weeks
期刊介绍: The primary aims of Computer Methods in Biomechanics and Biomedical Engineering are to provide a means of communicating the advances being made in the areas of biomechanics and biomedical engineering and to stimulate interest in the continually emerging computer based technologies which are being applied in these multidisciplinary subjects. Computer Methods in Biomechanics and Biomedical Engineering will also provide a focus for the importance of integrating the disciplines of engineering with medical technology and clinical expertise. Such integration will have a major impact on health care in the future.
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