Journal of Biomedical Engineering Research (대한의용생체공학회:의공학회지)

The Korean Society of Medical and Biological Engineering (대한의용생체공학회)
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Evaluation of Biomechanical Properties of Fractured Adjacent Soft Tissue Due to Fracture Site Spacing During Closed Reduction After Forearm Fracture: Finite Element Analysis

전완 골절 후 도수 정복 시 골절 부위 간격에 따른 골절 인접 연부 조직의 생체역학적 특성 평가: 유한요소해석

  • Park, Jun-Sung (Department of Biomedical Engineering, Graduate School, Pusan National University) ;
  • Lee, Sang Hyun (Department of Orthopaedic Surgery, School of Medicine, Pusan National University) ;
  • Song, Chanhee (Medical Research Institute, Pusan National University) ;
  • Ro, Jung Hoon (Department of Biomedical Engineering, School of Medicine, Pusan National University) ;
  • Lee, Chiseung (Department of Biomedical Engineering, School of Medicine, Pusan National University)
  • 박준성 (부산대학교 대학원 의공학전공) ;
  • 이상현 (부산대학교 의과대학 정형외과학교실) ;
  • 송찬희 (부산대학교 의학연구원) ;
  • 노정훈 (부산대학교 의과대학 의공학교실) ;
  • 이치승 (부산대학교 의과대학 의공학교실)
  • Received : 2022.07.20
  • Accepted : 2022.10.11
  • Published : 2022.10.31
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Abstract

The purpose of this study is to evaluate the biomechanical properties of fractured adjacent soft tissue during closed reduction after forearm fracture using the finite element method. To accomplish this, a finite element (FE) model of the forearm including soft tissue was constructed, and the material properties reported in previous studies were implemented. Based on this, nine finite element models with different fracture types and fracture positions, which are the main parameters, were subjected to finite element analysis under the same load and boundary conditions. The load condition simulated the traction of increasing the fracture site spacing from 0.4 mm to 1.6 mm at intervals of 0.4 mm at the distal end of the radioulnar bone. Through the finite element analysis, the fracture type, fracture location, and displacement were compared and analyzed for the fracture site spacing of the fractured portion and the maximum equivalent stress of the soft tissues adjacent to the fracture(interosseous membrane, muscle, fat, and skin). The results of this study are as follows. The effect of the major parameters on the fracture site spacing of the fractured part is negligible. Also, from the displacement of 1.2 mm, the maximum equivalent stress of the interosseous membrane and muscle adjacent to the fractured bone exceeds the ultimate tensile strength of the material. In addition, it was confirmed that the maximum equivalent stresses of soft tissues(fat, skin) were different in size but similar in trend. As a result, this study was able to numerically confirm the damage to the adjacent soft tissue due to the fracture site spacing during closed reduction of forearm fracture.

Keywords

Acknowledgement

This study was supported by Biomedical Research Institute Grant (2019B033), Pusan National University Hospital. The authors gratefully acknowledge the human data support provided by Korea Institute of Science & Technology Information (KISTI) which produced these data with Catholic University of Medicine.

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