Pavan Piero G, Pachera Paola, Stecco Carla, Natali Arturo N
Department of Industrial Engineering, University of Padova, Via G. Marzolo 9, 35131, Padova, Italia, Italy.
Centre of Mechanics of Biological Materials, University of Padova, Via G. Colombo 3, 35131, Padova, Italy.
Med Biol Eng Comput. 2015 Oct;53(10):951-9. doi: 10.1007/s11517-015-1308-5. Epub 2015 May 16.
The present work focuses on the numerical modeling of the mechanical behavior of the crural fascia, the deep fascia enwrapping the lower limb muscles. This fascia has an important biomechanical role, due to its interaction with muscles during contraction and its association with pathological events, such as compartment syndrome. The mechanical response of the crural fascia is described by assuming a hyperelastic fiber-reinforced constitutive model, with families of fibers disposed according to the spatial disposition of the collagen network, as shown in histological analyses. A two-dimensional finite element model of a lower limb transversal section has been developed to analyze deformational behavior, with particular attention on interaction phenomena between crural fascia and enwrapped muscles. The constitutive model adopted for the crural fascia well fits experimental data taken along the proximal-distal and medial-lateral directions. The finite element analysis allows for interpreting the relation between change in volume and pressure of muscle compartments and the crural fascia deformation.
目前的工作聚焦于小腿筋膜（即包裹下肢肌肉的深筋膜）力学行为的数值模拟。由于该筋膜在肌肉收缩过程中与肌肉相互作用，且与诸如骨筋膜室综合征等病理事件相关联，因此具有重要的生物力学作用。通过假设一个超弹性纤维增强本构模型来描述小腿筋膜的力学响应，其中纤维族根据胶原网络的空间分布进行排列，如组织学分析所示。已建立下肢横切面的二维有限元模型来分析变形行为，特别关注小腿筋膜与被包裹肌肉之间的相互作用现象。用于小腿筋膜的本构模型与沿近端 - 远端和内侧 - 外侧方向获取的实验数据拟合良好。有限元分析有助于解释肌肉骨筋膜室的体积和压力变化与小腿筋膜变形之间的关系。
