Applicable safety analysis and biomechanical study of iliosacral triangular osteosynthesis

Abstract Background The aim of this study was to investigate the applicable safety and biomechanical stability of iliosacral triangular osteosynthesis (ITO) through 3D modeling and finite element (FE) analysis. Methods Pelvic CT imaging data from 100 cases were imported into Mimics software for the...

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Autores principales: Jianxiong Zheng, Jie Xiang, Xiaoreng Feng, Fei Liu, Keyu Chen, Bin Chen
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Lenguaje:EN
Publicado: BMC 2021
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spelling oai:doaj.org-article:11be89dc37954685a0a79a147573e29d2021-11-28T12:24:41ZApplicable safety analysis and biomechanical study of iliosacral triangular osteosynthesis10.1186/s12891-021-04856-81471-2474https://doaj.org/article/11be89dc37954685a0a79a147573e29d2021-11-01T00:00:00Zhttps://doi.org/10.1186/s12891-021-04856-8https://doaj.org/toc/1471-2474Abstract Background The aim of this study was to investigate the applicable safety and biomechanical stability of iliosacral triangular osteosynthesis (ITO) through 3D modeling and finite element (FE) analysis. Methods Pelvic CT imaging data from 100 cases were imported into Mimics software for the construction of 3D pelvic models. The S2-alar-iliac (S2AI) screws and S2 sacroiliac screws were placed in the S2 segment with optimal distribution and their compatibility rate on the S2 safe channel was observed and analyzed. In the FE model, the posterior pelvic ring was fixed with two transsacral screws (TTS), triangular osteosynthesis (TO) and ITO, respectively. Four different loading methods were implemented in sequence to simulate the force in standing, flexion, right bending, and left twisting, respectively. The relative displacement and change in relative displacement of the three fixing methods were recorded and analyzed. Results The theoretical compatibility rate of S2AI screw and S2 sacroiliac screw in S2 segment was 94%, of which 100% were in males and 88% in females. In the FE model, in terms of overall relative displacement, TTS group showed the smallest relative displacement, the ITO group showed the second smallest, and the TO group the largest relative displacement. The change in relative displacement of the TTS group displayed the smaller fluctuations in motion. The change in relative displacement of the TO group under right bending and left twisting displayed larger fluctuations, while the ITO group under flexion displayed larger fluctuations. Conclusions The simultaneous placement of S2AI screw and S2 sacroiliac screw in the S2 segment is theoretically safe. Although the biomechanical stability of ITO is slightly lower than TTS, it is better than TO, and can be used as a new method for the treatment of posterior pelvic ring injuries.Jianxiong ZhengJie XiangXiaoreng FengFei LiuKeyu ChenBin ChenBMCarticleS2-alar-iliac screwTriangular osteosynthesisSacral fractureIliosacral fixationBiomechanicsDiseases of the musculoskeletal systemRC925-935ENBMC Musculoskeletal Disorders, Vol 22, Iss 1, Pp 1-9 (2021)
institution DOAJ
collection DOAJ
language EN
topic S2-alar-iliac screw
Triangular osteosynthesis
Sacral fracture
Iliosacral fixation
Biomechanics
Diseases of the musculoskeletal system
RC925-935
spellingShingle S2-alar-iliac screw
Triangular osteosynthesis
Sacral fracture
Iliosacral fixation
Biomechanics
Diseases of the musculoskeletal system
RC925-935
Jianxiong Zheng
Jie Xiang
Xiaoreng Feng
Fei Liu
Keyu Chen
Bin Chen
Applicable safety analysis and biomechanical study of iliosacral triangular osteosynthesis
description Abstract Background The aim of this study was to investigate the applicable safety and biomechanical stability of iliosacral triangular osteosynthesis (ITO) through 3D modeling and finite element (FE) analysis. Methods Pelvic CT imaging data from 100 cases were imported into Mimics software for the construction of 3D pelvic models. The S2-alar-iliac (S2AI) screws and S2 sacroiliac screws were placed in the S2 segment with optimal distribution and their compatibility rate on the S2 safe channel was observed and analyzed. In the FE model, the posterior pelvic ring was fixed with two transsacral screws (TTS), triangular osteosynthesis (TO) and ITO, respectively. Four different loading methods were implemented in sequence to simulate the force in standing, flexion, right bending, and left twisting, respectively. The relative displacement and change in relative displacement of the three fixing methods were recorded and analyzed. Results The theoretical compatibility rate of S2AI screw and S2 sacroiliac screw in S2 segment was 94%, of which 100% were in males and 88% in females. In the FE model, in terms of overall relative displacement, TTS group showed the smallest relative displacement, the ITO group showed the second smallest, and the TO group the largest relative displacement. The change in relative displacement of the TTS group displayed the smaller fluctuations in motion. The change in relative displacement of the TO group under right bending and left twisting displayed larger fluctuations, while the ITO group under flexion displayed larger fluctuations. Conclusions The simultaneous placement of S2AI screw and S2 sacroiliac screw in the S2 segment is theoretically safe. Although the biomechanical stability of ITO is slightly lower than TTS, it is better than TO, and can be used as a new method for the treatment of posterior pelvic ring injuries.
format article
author Jianxiong Zheng
Jie Xiang
Xiaoreng Feng
Fei Liu
Keyu Chen
Bin Chen
author_facet Jianxiong Zheng
Jie Xiang
Xiaoreng Feng
Fei Liu
Keyu Chen
Bin Chen
author_sort Jianxiong Zheng
title Applicable safety analysis and biomechanical study of iliosacral triangular osteosynthesis
title_short Applicable safety analysis and biomechanical study of iliosacral triangular osteosynthesis
title_full Applicable safety analysis and biomechanical study of iliosacral triangular osteosynthesis
title_fullStr Applicable safety analysis and biomechanical study of iliosacral triangular osteosynthesis
title_full_unstemmed Applicable safety analysis and biomechanical study of iliosacral triangular osteosynthesis
title_sort applicable safety analysis and biomechanical study of iliosacral triangular osteosynthesis
publisher BMC
publishDate 2021
url https://doaj.org/article/11be89dc37954685a0a79a147573e29d
work_keys_str_mv AT jianxiongzheng applicablesafetyanalysisandbiomechanicalstudyofiliosacraltriangularosteosynthesis
AT jiexiang applicablesafetyanalysisandbiomechanicalstudyofiliosacraltriangularosteosynthesis
AT xiaorengfeng applicablesafetyanalysisandbiomechanicalstudyofiliosacraltriangularosteosynthesis
AT feiliu applicablesafetyanalysisandbiomechanicalstudyofiliosacraltriangularosteosynthesis
AT keyuchen applicablesafetyanalysisandbiomechanicalstudyofiliosacraltriangularosteosynthesis
AT binchen applicablesafetyanalysisandbiomechanicalstudyofiliosacraltriangularosteosynthesis
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