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足弓第2与第5跖列的肌骨系有限元模型及其临床意义
引用本文:吴立军,丁自海,钟世镇,郑蓉梅. 足弓第2与第5跖列的肌骨系有限元模型及其临床意义[J]. 中国临床解剖学杂志, 2006, 24(6): 691-694
作者姓名:吴立军  丁自海  钟世镇  郑蓉梅
作者单位:1. 汕头大学医学院第二附属医院骨科,汕头,515041
2. 南方医科大学广东省医学生物力学重点实验室,广州,510515
3. 温州医学院生物医学工程系,温州,325035
基金项目:广东省自然科学基金;广东省医学科学技术研究基金
摘    要:目的:建立足部内侧纵弓第2跖列与外侧纵弓第5跖列的肌骨系统有限元模型,为研究跖骨应力性骨折与相关足痛症提供生物力学工具。方法:采用中国虚拟人“女性1号”CT图像和MRI图像;应用非线性有限元方法进行生物力学分析。结果:构建了包含皮质骨、松质骨、软骨、韧带、足底腱膜、肌腱、固有肌、脂肪垫、骨髓腔与骨髓窦等10种组织的第2、第5跖列的有限元模型。足弓直立时,最大von Mises应力/应变位于第2、第5跖骨骨干与基底。各种足底软组织中,足底腱膜承担着最大张拉应力,其次为足底长韧带,足底固有肌张拉应力最小。结论:有限元预测的应力应变为研究跖骨应力性骨折,足底腱膜炎引起的慢性跟骨痛,以及足弓塌陷的发生机制提供了生物力学依据。

关 键 词:跖骨应力性骨折  足底腱膜炎  足弓塌陷  肌骨生物力学  有限元法  虚拟中国人
文章编号:1001-165X(2006)06-0691-04
收稿时间:2006-07-12
修稿时间:2006-07-12

Clinical significations of finite element models of the second ray and the fifth ray of the musculoskeletal plantar arch
WU Li-jun, DING Zhi-hai, ZHONG Shi-zhen. Clinical significations of finite element models of the second ray and the fifth ray of the musculoskeletal plantar arch[J]. Chinese Journal of Clinical Anatomy, 2006, 24(6): 691-694
Authors:WU Li-jun   DING Zhi-hai   ZHONG Shi-zhen
Affiliation:The Second Affiliated Hospital, Shantou University Medical College, Shantou 515041, China
Abstract:Objective: To develop anatomically detailed finite element models of the second ray and the fifth ray of the musculoskeletal plantar arches, which may provide a biomechanical tool for investigating metatarsal stress fractures and painful foot syndrome. Methods: CT and MRI images of the foot of Virtual Chinese Human "female No. 1" were adopted, and the finite element method incorporating geometric and material nonlinearities was used. Results: Musculoskeletal finite element models of the second ray and the fifth ray were developed, which comprised of 10 kind of tissues. During balanced standing, the maximum von Mises stresses/strains were predicted at the second and the fifth metatarsal. Among plantar soft tissues, relative high tensions were burdened by plantar fascia, followed by long plantar ligament. The minimum tensions occurred in plantar intrinsic muscles. Conclusions: The finite element predictions contribute to establish biomechanical rationale for the etiology of metatarsal stress fractures, chronic heel pain ignited by plantar fasciitis, and the collapse of foot arch.
Keywords:metatarsal stress fractures   plantar fasciitis   plantar arch collapse   musculoskeletal biomechanics   finite element method   Virtual Chinese Human
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