Biomechanical study of different fixation constructs for anterior column and posterior hemi-transverse acetabular fractures: a finite element analysis
Abstract Background To compare the biomechanical properties and stability, using a finite element model, of four fixation constructs used for the treatment of anterior column and posterior hemi-transverse (ACPHT) acetabular fractures under two physiological loading conditions (standing and sitting)....
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
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BMC
2023-04-01
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| Series: | Journal of Orthopaedic Surgery and Research |
| Subjects: | |
| Online Access: | https://doi.org/10.1186/s13018-023-03715-7 |
| _version_ | 1797845905523605504 |
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| author | Kaifang Chen Guixiong Huang Yizhou Wan Sheng Yao Yanlin Su Lianxin Li Xiaodong Guo |
| author_facet | Kaifang Chen Guixiong Huang Yizhou Wan Sheng Yao Yanlin Su Lianxin Li Xiaodong Guo |
| author_sort | Kaifang Chen |
| collection | DOAJ |
| description | Abstract Background To compare the biomechanical properties and stability, using a finite element model, of four fixation constructs used for the treatment of anterior column and posterior hemi-transverse (ACPHT) acetabular fractures under two physiological loading conditions (standing and sitting). Methods A finite element model simulating ACPHT acetabular fractures was created for four different scenarios: a suprapectineal plate combined with posterior column and infra-acetabular screws (SP-PS-IS); an infrapectineal plate combined with posterior column and infra-acetabular screws (IP-PS-IS); a special infrapectineal quadrilateral surface buttress plate (IQP); and a suprapectineal plate combined with a posterior column plate (SP-PP). Three-dimensional finite element stress analysis was performed on these models with a load of 700 N in standing and sitting positions. Biomechanical stress distributions and fracture displacements were analysed and compared between these fixation techniques. Results In models simulating the standing position, high displacements and stress distributions were observed at the infra-acetabulum regions. The degree of these fracture displacements was low in the IQP (0.078 mm), as compared to either the IP-PS-IS (0.079 mm) or the SP & PP (0.413 mm) fixation constructs. However, the IP-PS-IS fixation construct had the highest effective stiffness. In models simulating the sitting position, high fracture displacements and stress distributions were observed at the regions of the anterior and posterior columns. The degree of these fracture displacements was low in the SP-PS-IS (0.101 mm), as compared to the IP-PS-IS (0.109 mm) and the SP-PP (0.196 mm) fixation constructs. Conclusion In both standing and sitting positions, the stability and stiffness index were comparable between the IQP, SP-PS-IS, and IP-PS-IS. These 3 fixation constructs had smaller fracture displacements than the SP-PP construct. The stress concentrations at the regions of quadrilateral surface and infra-acetabulum suggest that the buttressing fixation of quadrilateral plate was required for ACPHT fractures. |
| first_indexed | 2024-04-09T17:46:30Z |
| format | Article |
| id | doaj.art-d30355b505e44817876782790e68fb7a |
| institution | Directory Open Access Journal |
| issn | 1749-799X |
| language | English |
| last_indexed | 2024-04-09T17:46:30Z |
| publishDate | 2023-04-01 |
| publisher | BMC |
| record_format | Article |
| series | Journal of Orthopaedic Surgery and Research |
| spelling | doaj.art-d30355b505e44817876782790e68fb7a2023-04-16T11:20:09ZengBMCJournal of Orthopaedic Surgery and Research1749-799X2023-04-0118111110.1186/s13018-023-03715-7Biomechanical study of different fixation constructs for anterior column and posterior hemi-transverse acetabular fractures: a finite element analysisKaifang Chen0Guixiong Huang1Yizhou Wan2Sheng Yao3Yanlin Su4Lianxin Li5Xiaodong Guo6Department of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and TechnologyDepartment of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and TechnologyDepartment of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and TechnologyDepartment of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and TechnologyDepartment of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and TechnologyDepartment of Orthopaedics, Shandong Provincial Hospital Affiliated to Shandong UniversityDepartment of Orthopaedics, Union Hospital, Tongji Medical College, Huazhong University of Science and TechnologyAbstract Background To compare the biomechanical properties and stability, using a finite element model, of four fixation constructs used for the treatment of anterior column and posterior hemi-transverse (ACPHT) acetabular fractures under two physiological loading conditions (standing and sitting). Methods A finite element model simulating ACPHT acetabular fractures was created for four different scenarios: a suprapectineal plate combined with posterior column and infra-acetabular screws (SP-PS-IS); an infrapectineal plate combined with posterior column and infra-acetabular screws (IP-PS-IS); a special infrapectineal quadrilateral surface buttress plate (IQP); and a suprapectineal plate combined with a posterior column plate (SP-PP). Three-dimensional finite element stress analysis was performed on these models with a load of 700 N in standing and sitting positions. Biomechanical stress distributions and fracture displacements were analysed and compared between these fixation techniques. Results In models simulating the standing position, high displacements and stress distributions were observed at the infra-acetabulum regions. The degree of these fracture displacements was low in the IQP (0.078 mm), as compared to either the IP-PS-IS (0.079 mm) or the SP & PP (0.413 mm) fixation constructs. However, the IP-PS-IS fixation construct had the highest effective stiffness. In models simulating the sitting position, high fracture displacements and stress distributions were observed at the regions of the anterior and posterior columns. The degree of these fracture displacements was low in the SP-PS-IS (0.101 mm), as compared to the IP-PS-IS (0.109 mm) and the SP-PP (0.196 mm) fixation constructs. Conclusion In both standing and sitting positions, the stability and stiffness index were comparable between the IQP, SP-PS-IS, and IP-PS-IS. These 3 fixation constructs had smaller fracture displacements than the SP-PP construct. The stress concentrations at the regions of quadrilateral surface and infra-acetabulum suggest that the buttressing fixation of quadrilateral plate was required for ACPHT fractures.https://doi.org/10.1186/s13018-023-03715-7Acetabular fracturesFinite elementBiomechanicsQuadrilateral surfaceInfrapectineal plate |
| spellingShingle | Kaifang Chen Guixiong Huang Yizhou Wan Sheng Yao Yanlin Su Lianxin Li Xiaodong Guo Biomechanical study of different fixation constructs for anterior column and posterior hemi-transverse acetabular fractures: a finite element analysis Journal of Orthopaedic Surgery and Research Acetabular fractures Finite element Biomechanics Quadrilateral surface Infrapectineal plate |
| title | Biomechanical study of different fixation constructs for anterior column and posterior hemi-transverse acetabular fractures: a finite element analysis |
| title_full | Biomechanical study of different fixation constructs for anterior column and posterior hemi-transverse acetabular fractures: a finite element analysis |
| title_fullStr | Biomechanical study of different fixation constructs for anterior column and posterior hemi-transverse acetabular fractures: a finite element analysis |
| title_full_unstemmed | Biomechanical study of different fixation constructs for anterior column and posterior hemi-transverse acetabular fractures: a finite element analysis |
| title_short | Biomechanical study of different fixation constructs for anterior column and posterior hemi-transverse acetabular fractures: a finite element analysis |
| title_sort | biomechanical study of different fixation constructs for anterior column and posterior hemi transverse acetabular fractures a finite element analysis |
| topic | Acetabular fractures Finite element Biomechanics Quadrilateral surface Infrapectineal plate |
| url | https://doi.org/10.1186/s13018-023-03715-7 |
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