Experimental study of fractures of the posterior pelvic ring C1.1 using LC-II screws and internal fixation by plate
Abstract Introduction To compare the biomechanical outcomes of C1.1 posterior pelvic ring fractures treated with different numbers of LC-II screws and plate internal fixation. Materials and methods Nine adult preserved pelvic specimens were used. After being measured by bone densitometry, the specim...
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BMC
2024-11-01
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| Series: | Journal of Orthopaedic Surgery and Research |
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| Online Access: | https://doi.org/10.1186/s13018-024-05229-2 |
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| author | Yu Liu Xukai Wang Bin Tian Hong Yao Guangyao Liu |
| author_facet | Yu Liu Xukai Wang Bin Tian Hong Yao Guangyao Liu |
| author_sort | Yu Liu |
| collection | DOAJ |
| description | Abstract Introduction To compare the biomechanical outcomes of C1.1 posterior pelvic ring fractures treated with different numbers of LC-II screws and plate internal fixation. Materials and methods Nine adult preserved pelvic specimens were used. After being measured by bone densitometry, the specimens were randomly divided into 3 groups of 3 pelvic specimens each. The C1.1 pelvic fractures were generated by iliac osteotomies and anterior pelvic ring osteotomies. The fractures were fixed and randomly divided into three groups: (1) one LC-II screw, (2) two LC-II screws, and (3) two reconstruction plates. The anterior pelvic rings were all fixed with pubic branch screws. A biomechanical testing machine loaded all specimens vertically, recording the displacement and ultimate load of the specimens to quantify the stiffness. Results When loads up to 1000 N were applied, the displacement of the iliac bone was close between the one LC-II screw and the two LC-II screw group specimens; (P > 0.05); when loads such as 1000 N, 1200 N and 1400 N were applied, there was no significant difference in displacement between the plate fixation group and the two LC-II screw fixation group (P > 0.05), both of which were superior to the one LC-II screw fixation group (P < 0.05). There was no significant difference in compressive stiffness between the two LC-II screw fixation groups and the plate fixation group (P > 0.05), and both were superior to the one LC-II screw fixation group (P < 0.05) the ultimate load of both the two LC-II screws and the steel plate is greater than that of one LC-II screw (1.74 times the ultimate load of one LC-II screw for the two LC-II screws and 1.83 times the ultimate load of one LC-II screw for the steel plate). Conclusion For posterior pelvic ring fractures of type C1.1, placement of two LC-II screws provides comparable posterior pelvic ring stability compared to reconstructed plates. At loads below 1000 N, one LC-II screw fixation and two LC-II screws were comparable in restoring posterior pelvic ring stability. |
| format | Article |
| id | doaj-art-d01fef65fb4140709bf87fe41b17b49b |
| institution | Kabale University |
| issn | 1749-799X |
| language | English |
| publishDate | 2024-11-01 |
| publisher | BMC |
| record_format | Article |
| series | Journal of Orthopaedic Surgery and Research |
| spelling | doaj-art-d01fef65fb4140709bf87fe41b17b49b2024-11-17T12:38:32ZengBMCJournal of Orthopaedic Surgery and Research1749-799X2024-11-011911810.1186/s13018-024-05229-2Experimental study of fractures of the posterior pelvic ring C1.1 using LC-II screws and internal fixation by plateYu Liu0Xukai Wang1Bin Tian2Hong Yao3Guangyao Liu4Department of Orthopedics, The Third Affiliated Hospital of Zhengzhou UniversityDepartment of Orthopedics, Jilin University, China Japan Union HospitalDepartment of Orthopedics, Jilin University, China Japan Union HospitalDepartment of Breast Surgery, The First Affiliated Hospital of Jilin UniversityDepartment of Orthopedics, Jilin University, China Japan Union HospitalAbstract Introduction To compare the biomechanical outcomes of C1.1 posterior pelvic ring fractures treated with different numbers of LC-II screws and plate internal fixation. Materials and methods Nine adult preserved pelvic specimens were used. After being measured by bone densitometry, the specimens were randomly divided into 3 groups of 3 pelvic specimens each. The C1.1 pelvic fractures were generated by iliac osteotomies and anterior pelvic ring osteotomies. The fractures were fixed and randomly divided into three groups: (1) one LC-II screw, (2) two LC-II screws, and (3) two reconstruction plates. The anterior pelvic rings were all fixed with pubic branch screws. A biomechanical testing machine loaded all specimens vertically, recording the displacement and ultimate load of the specimens to quantify the stiffness. Results When loads up to 1000 N were applied, the displacement of the iliac bone was close between the one LC-II screw and the two LC-II screw group specimens; (P > 0.05); when loads such as 1000 N, 1200 N and 1400 N were applied, there was no significant difference in displacement between the plate fixation group and the two LC-II screw fixation group (P > 0.05), both of which were superior to the one LC-II screw fixation group (P < 0.05). There was no significant difference in compressive stiffness between the two LC-II screw fixation groups and the plate fixation group (P > 0.05), and both were superior to the one LC-II screw fixation group (P < 0.05) the ultimate load of both the two LC-II screws and the steel plate is greater than that of one LC-II screw (1.74 times the ultimate load of one LC-II screw for the two LC-II screws and 1.83 times the ultimate load of one LC-II screw for the steel plate). Conclusion For posterior pelvic ring fractures of type C1.1, placement of two LC-II screws provides comparable posterior pelvic ring stability compared to reconstructed plates. At loads below 1000 N, one LC-II screw fixation and two LC-II screws were comparable in restoring posterior pelvic ring stability.https://doi.org/10.1186/s13018-024-05229-2Pelvic fracturesBiomechanical studiesLC-II screwsPercutaneous screw fixationMinimally invasive treatment |
| spellingShingle | Yu Liu Xukai Wang Bin Tian Hong Yao Guangyao Liu Experimental study of fractures of the posterior pelvic ring C1.1 using LC-II screws and internal fixation by plate Journal of Orthopaedic Surgery and Research Pelvic fractures Biomechanical studies LC-II screws Percutaneous screw fixation Minimally invasive treatment |
| title | Experimental study of fractures of the posterior pelvic ring C1.1 using LC-II screws and internal fixation by plate |
| title_full | Experimental study of fractures of the posterior pelvic ring C1.1 using LC-II screws and internal fixation by plate |
| title_fullStr | Experimental study of fractures of the posterior pelvic ring C1.1 using LC-II screws and internal fixation by plate |
| title_full_unstemmed | Experimental study of fractures of the posterior pelvic ring C1.1 using LC-II screws and internal fixation by plate |
| title_short | Experimental study of fractures of the posterior pelvic ring C1.1 using LC-II screws and internal fixation by plate |
| title_sort | experimental study of fractures of the posterior pelvic ring c1 1 using lc ii screws and internal fixation by plate |
| topic | Pelvic fractures Biomechanical studies LC-II screws Percutaneous screw fixation Minimally invasive treatment |
| url | https://doi.org/10.1186/s13018-024-05229-2 |
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