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KMID : 1137820220430050308
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의공학회지
2022 Volume.43 No. 5 p.308 ~ p.318
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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
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Park Jun-Sung
Lee Sang-Hyun
Song Chan-Hee
Ro Jung-Hoon
Lee Chi-Seung
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Abstract
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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 posi- tions, 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 inter- osseous 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.
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KEYWORD
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Forearm fracture, Closed reduction, Fracture site spacing, Soft tissue damage, Biomechanics, Finite element method (FEM)
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