Chinese Journal of Tissue Engineering Research ›› 2017, Vol. 21 ›› Issue (4): 609-614.doi: 10.3969/j.issn.2095-4344.2017.04.020

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Finite element analysis of skin closure stress in different directions

Lv Ying1, An Mei-wen1, Hou Chun-sheng2   

  1. 1Taiyuan University of Technology, Institute of Applied Mechanics and Biomedical Engineering, Taiyuan 030024, Shanxi Province, China; 2General Hospital of TISCO, Burn Center of Shanxi Province, Taiyuan 030009, Shanxi Province, China
  • Received:2016-12-01 Online:2017-02-08 Published:2017-03-13
  • Contact: Corresponding author: An Mei-wen, Doctoral supervisor, Professor, Taiyuan University of Technology, Institute of Applied Mechanics and Biomedical Engineering, Taiyuan 030024, Shanxi Province, China
  • About author:Lv Ying, Taiyuan University of Technology, Institute of Applied Mechanics and Biomedical Engineering, Taiyuan 030024, Shanxi Province, China
  • Supported by:

    the National Natural Science Foundation of China, No. 11372208; the Natural Science Foundation of Shanxi Province, No. 2013011002-4

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Abstract:

Abstract
BACKGROUND: Mechanical factors play an important role in wound healing and scar formation. Finite element model is established to stimulate, analyze and optimize different sutures, which has become a hotspot to guide 
surgies accurately.
OBJECTIVE: To analyze the stress distribution of different simple interrupted suturing directions on the skin wound by establishing the skin finite element model, and to provide basic data for the study of scar formation.
METHODS: Porcine back skin uniaxial tensile test was performed to provide reference for the mechanical properties of human skin. Orthotropic skin wound model was established using ABAQUS to calculate the stress distribution on the wound in different suturing directions.
RESULTS AND CONCLUSION: The anisotropic mechanical properties of skin wound influenced the suture stress significantly. The elastic modulus along the Langer’s line was larger than that in the vertical direction. The stress increased orderly in the Langer’s line direction, the Langer’s line deflected 30°, bias Langer’s line 45° and vertical Langer’s line. These results suggest that the clinical incision should be made along the Langer’s line direction. Additionally, the cut at an angle with Langer’s line can also reduce the stress of suture.

中国组织工程研究杂志出版内容重点：组织构建；骨细胞；软骨细胞；细胞培养；成纤维细胞；血管内皮细胞；骨质疏松；组织工程

Key words: Cicatrix, Keloid, Stress, Mechanical, Finite Element Analysis, Tissue Engineering

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