中国组织工程研究 ›› 2025, Vol. 29 ›› Issue (21): 4413-4420.doi: 10.12307/2025.814

• 数字化骨科Digital orthopedics • 上一篇    下一篇

肌肉负荷对股骨干骨折早期愈合生物力学影响的有限元分析

程超然1,张峻霞1,2,贾  军3   

  1. 1天津科技大学机械工程学院,天津市   300222;2天津市轻工与食品工程机械装备集成设计与在线监控重点实验室,天津科技大学,天津市   300222;3天津市天津医院骨科,天津市   300200
  • 收稿日期:2024-05-13 接受日期:2024-07-31 出版日期:2025-07-28 发布日期:2024-12-04
  • 通讯作者: 张峻霞,博士,教授,天津科技大学机械工程学院,天津市 300222;天津市轻工与食品工程机械装备集成设计与在线监控重点实验室,天津科技大学,天津市 300222 贾军,博士,主任医师,天津市天津医院骨科,天津市 300200
  • 作者简介:程超然,男,1988年生,河南省商丘市人,汉族,天津科技大学在读博士,主要从骨折愈合的生物力学研究。
  • 基金资助:
    天津市科技计划项目(20JCYBJC01430),项目负责人:贾军

Finite element analysis of muscle loading effect on biomechanics of early healing of femoral stem fractures

Cheng Chaoran1, Zhang Junxia1, 2, Jia Jun3   

  1. 1College of Mechanical Engineering, Tianjin University of Science and Technology, Tianjin 300222, China; 2Tianjin Key Laboratory of Integrated Design and Online Monitoring for Light Industry and Food Engineering Machinery and Equipment, Tianjin University of Science and Technology, Tianjin 300222, China; 3Department of Orthopedics, Tianjin Hospital, Tianjin 300200, China
  • Received:2024-05-13 Accepted:2024-07-31 Online:2025-07-28 Published:2024-12-04
  • Contact: Zhang Junxia, MD, Professor, College of Mechanical Engineering, Tianjin University of Science and Technology, Tianjin 300222, China; Tianjin Key Laboratory of Integrated Design and Online Monitoring for Light Industry and Food Engineering Machinery and Equipment, Tianjin University of Science and Technology, Tianjin 300222, China Corresponding author: Jia Jun, MD, Chief physician, Department of Orthopedics, Tianjin Hospital, Tianjin 300200, China
  • About author:Cheng Chaoran, Doctoral candidate, College of Mechanical Engineering, Tianjin University of Science and Technology, Tianjin 300222, China
  • Supported by:
    Tianjin Science and Technology Plan Project, No. 20JCYBJC01430 (to JJ)

摘要:

文题释义

肌肉负荷:是指肌肉在进行运动或承受质量时所承受的力量或压力。在骨折愈合过程中,骨头需要受到适度的负荷刺激,以促进新骨组织的生长和修复。而肌肉收缩和运动可以产生力量刺激,促进骨细胞的生长和增殖,适当的肌肉负荷可以促进骨折部位的愈合过程。
有限元分析:是一种数值计算方法,常用于解决复杂的工程和科学问题。其思想是将大型结构或系统分解为许多小的有限元素,然后利用数学方法对这些元素进行计算求解,以模拟和预测结构或系统的行为。在医学领域,有限元分析被广泛应用于模拟人体组织和器官的力学行为。

摘要
背景:以往的研究多通过忽略肌肉负荷和采用简化股骨负荷的方式,进行骨折早期愈合的生物力学分析。然而,肌肉负荷对骨折早期愈合产生的生物力学影响尚不清楚。
目的:构建不同的股骨负荷模型,研究肌肉负荷对骨折愈合的生物力学影响,帮助临床医生更好地理解骨折愈合的生物力学过程,优化治疗方案。
方法:利用AnyBody Modeling System软件构建个性化的人体肌肉骨骼系统,通过仿真分析以获取体内的肌肉骨骼负荷模型。该模型和采用改进简化负荷方法、简化负荷方法构建的股骨负荷模型,分别作为有限元输入的边界条件,对站立状态下锁定加压钢板应力应变、骨折块应变进行分析。
结果与结论:①与简化负荷方法相比,肌肉骨骼方法得到的锁定加压钢板应力、应变和骨折块应变分别小了31.9%;38.9%和19.5%;②肌肉骨骼方法与改进简化负荷方法对比发现,忽略肌肉负荷则会造成锁定加压钢板的应力、应变和骨折块应变分别高估16.8%,14.3%和19.5%,肌肉负荷对骨折块的剪切运动大小无明显影响,而对运动方向有明显的影响;③结果表明,简化股骨负荷和忽略肌肉负荷的方法与肌骨骨骼负荷情况存在一定的偏差,因此,在研究骨折愈合时需考虑肌肉负荷的生物力学影响。

关键词: 肌肉负荷, 骨折愈合, 锁定加压钢板, 骨折块应变, 有限元分析

Abstract: BACKGROUND: Previous studies have mostly performed biomechanical analysis of early fracture healing by ignoring muscle loading and using simplified femoral loading. Nevertheless, the biomechanical effects of muscle loading on early fracture healing are still uncertain.
OBJECTIVE: To construct various femoral loading models allows for the study of the biomechanical effects of muscle loading on fracture healing, enabling clinicians to gain a deeper understanding of the biomechanical process of fracture healing and to optimize treatment protocols.
METHODS: The AnyBody Modeling System software was employed to construct a personalized human musculoskeletal system, which was then analyzed by simulation in order to obtain the musculoskeletal loading model in vivo. This model, along with the femur loading model constructed using the improved simplified loading method and the simplified loading method, was utilized as boundary conditions for the finite element inputs, which were used to analyze the locking compression plate stress-strain and interfragmentary strain in the standing condition, respectively.
RESULTS AND CONCLUSION: (1) The locking compression plate stresses and strains and interfragmentary strains obtained from the musculoskeletal method were, respectively, 31.9%, 38.9%, and 19.5% smaller than those obtained from the simplified loading method. (2) A comparison of the musculoskeletal method with the modified simplified loading method revealed that the neglect of muscle loading resulted in an overestimation of locking compression plate stress and strain, as well as interfragmentary strain, by 16.8%, 14.3%, and 19.5%, respectively. Muscle loading did not have a significant effect on the magnitude of the shear motion of the fracture block, whereas it did have a significant effect on the direction of motion. (3) The results indicated that the simplified femoral loading and the method of ignoring muscle loading exhibited some deviation from the musculoskeletal loading situation. Consequently, it is necessary to consider the biomechanical effects of muscle loading in the study of fracture healing.

Key words: muscle loading, fracture healing, locking compression plates, fracture block strain, finite element analysis

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