有限元分析足底筋膜硬度对特发性腔静脉内部力学的影响:对跖骨痛的影响。

IF 1.7 4区 医学 Q3 COMPUTER SCIENCE, INTERDISCIPLINARY APPLICATIONS
Xuanzhen Cen, Yang Song, Peimin Yu, Dong Sun, János Simon, István Bíró, Yaodong Gu
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引用次数: 0

摘要

发生在空腔炎患者身上的跖骨痛通常与结构改变导致的前掌异常负荷模式有关。同时,这种足部畸形的持续引起的足底筋膜(PF)的频繁过度应力可能会进一步加剧跖骨过载引起的慢性疼痛。我们的目的是使用计算建模方法研究和量化PF刚度对腔静脉内部生物力学的影响。利用特发性腔静脉骨和软组织的实际三维几何形状重建了足踝复合体的患者专用有限元模型。进行了敏感性研究,以评估不同弹性模量(0-700 MPa)对跖骨应力分布的影响以及通过腔中的跖骨(MTP)和跗骨(TMT)关节的力传递。结果表明,PF刚度的变化导致跖骨区域的应力重新分布。峰值应力随着刚度的降低而逐渐降低,直到PF释放,最终与参考值350相比降低了22.39% MPa。此外,将PF刚度调整为参考值的两倍(700 MPa)使通过TMT和MTP接头的接触力分别增加了23%和116%。PF硬度的降低减轻了局灶性跖骨负荷,因此,手术筋膜松解可被认为减轻了腔静脉患者的跖骨疼痛。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Effects of plantar fascia stiffness on the internal mechanics of idiopathic pes cavus by finite element analysis: implications for metatarsalgia.

Metatarsalgia occurring in individuals with pes cavus is typically associated with abnormal loading patterns in the forefoot resulting from structural alterations. Simultaneously, the frequent overstress of the plantar fascia (PF) caused by the persistence of this foot deformity may further exacerbate the chronic pain induced by metatarsal overload. We aimed to investigate and quantify the effects of PF stiffness on the internal biomechanics of pes cavus using a computational modelling approach. A patient-specific finite element model of the foot-ankle complex using the actual three-dimensional geometry of idiopathic pes cavus bones and soft tissues was reconstructed. A sensitivity study was conducted to evaluate the effects of varying elastic modulus (0-700 MPa) of the PF on the metatarsal stress distribution, and force transmission through the metatarsophalangeal (MTP) and tarsometatarsal (TMT) joints in the pes cavus. The results indicated that variations in PF stiffness led to stress redistribution in the metatarsal region. Peak stress gradually reduced with decreasing stiffness until the PF was released, eventually resulting in a reduction of 22.39% compared to the reference value of 350 MPa. Furthermore, adjusting the PF stiffness to twice the reference value (700 MPa) increased the contact forces through the TMT and MTP joints by up to 23% and 116%, respectively. The reduction of PF stiffness alleviated focal metatarsal loading, and therefore, surgical fascia release can be considered to alleviate metatarsalgia in patients with pes cavus.

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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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