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Research article
Licheng Zhang
Chinese PLA General Hospital
Corresponding Author
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Background: The acetabular transverse posterior wall fracture (ATPWF) is a classic type of associated acetabular fracture with an increasing prevalence worldwide. The optimal treatment for this complex facture remains a formidable challenge in orthopedics trauma. Our self-designed locking plate used to show a promising potential in treating acetabular fracture, but no direct comparison between our novel plate with traditional fixations are available.
Materials and methods: The ATPWF model was constructed by the Mimics software using the volunteer’s cloud point data, and three internal devices were used to fix this model: the posterior-column locking plate with acterior-column screws (PCLP), double-column locking plates (DCLP), and the novel anatomical locking guidance plate (NALGP) with anterior-column screws and Magic screws. Then series of increasing downward vertical force (200N, 400N, and 600N) were loaded on above models. The stress distribution and peaks, and maximum displacements at two sites were assessed via a finite element analysis.
Results: We found that the major stress concentrated on the middle and lower sections of the posterior plate and lag screws in all three groups after the fixation on the ATPWF. And the NAGLP with its screws stood the bigger stress under all loading force when compared with other two groups. Then the maximum displacement of three groups were evaluated, and NAGLP group were found to have less fracture fragment displacements than PCLP and comparable results to DCLP at both sites.
Conclusion: Though our newly-designed plate with its screws showed larger stresses after fixation on the ATPWF, it also showed superiorities on the fracture stabilization over PCLP and comparable stability to DCLP, which might make the DCLP unnecessary for the treatment of ATPWF since DCLP would undoubtedly result in bigger surgical trauma and blood loss.
Keywords
Acetabular transverse posterior wall fracture, Novel anatomical locking guide plate, Finite element analysis
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A new preprint design is coming!
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This is a preprint, a preliminary version of a manuscript that has not completed peer review at a journal. Research Square does not conduct peer review prior to posting preprints. The posting of a preprint on this server should not be interpreted as an endorsement of its validity or suitability for dissemination as established information or for guiding clinical practice.
Research article
Licheng Zhang
Chinese PLA General Hospital
Corresponding Author
Badges
Prescreen
This manuscript passed our Prescreen assessment
Complete author information
Appropriate declaration statements
Potential risks to human health
Prescreen
History
CURRENT STATUS: Posted
Version 1
Posted 19 Feb, 2021
No community comments so far
Metrics
Comments: 0
PDF Downloads: ...
HTML Views: ...
Subject Areas
Orthopedic Surgery
License:
This work is licensed under a CC BY 4.0 License. Read Full License
Background: The acetabular transverse posterior wall fracture (ATPWF) is a classic type of associated acetabular fracture with an increasing prevalence worldwide. The optimal treatment for this complex facture remains a formidable challenge in orthopedics trauma. Our self-designed locking plate used to show a promising potential in treating acetabular fracture, but no direct comparison between our novel plate with traditional fixations are available.
Materials and methods: The ATPWF model was constructed by the Mimics software using the volunteer’s cloud point data, and three internal devices were used to fix this model: the posterior-column locking plate with acterior-column screws (PCLP), double-column locking plates (DCLP), and the novel anatomical locking guidance plate (NALGP) with anterior-column screws and Magic screws. Then series of increasing downward vertical force (200N, 400N, and 600N) were loaded on above models. The stress distribution and peaks, and maximum displacements at two sites were assessed via a finite element analysis.
Results: We found that the major stress concentrated on the middle and lower sections of the posterior plate and lag screws in all three groups after the fixation on the ATPWF. And the NAGLP with its screws stood the bigger stress under all loading force when compared with other two groups. Then the maximum displacement of three groups were evaluated, and NAGLP group were found to have less fracture fragment displacements than PCLP and comparable results to DCLP at both sites.
Conclusion: Though our newly-designed plate with its screws showed larger stresses after fixation on the ATPWF, it also showed superiorities on the fracture stabilization over PCLP and comparable stability to DCLP, which might make the DCLP unnecessary for the treatment of ATPWF since DCLP would undoubtedly result in bigger surgical trauma and blood loss.
Figure 1
Figure 2
Figure 3
Figure 4
Figure 5
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