A biomechanical study of locking spongious screws and failure rates are higher than expected in plate fixation
Abstract Locking plates have a rapidly growing process especially in the past decades and results are satisfactory especially in the osteoporotic bones compared to non-locking compression plates. There are many forms of failure in the fracture fixation of locking plates, and screw pull-out is one of...
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Nature Portfolio
2025-01-01
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| Online Access: | https://doi.org/10.1038/s41598-025-87045-0 |
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| author | Fatih Parmaksizoglu Onur Cetin Sinan Kilic Yener Ince |
| author_facet | Fatih Parmaksizoglu Onur Cetin Sinan Kilic Yener Ince |
| author_sort | Fatih Parmaksizoglu |
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| description | Abstract Locking plates have a rapidly growing process especially in the past decades and results are satisfactory especially in the osteoporotic bones compared to non-locking compression plates. There are many forms of failure in the fracture fixation of locking plates, and screw pull-out is one of the main failure reasons. In this study, we aim to investigate pull-out failure in locking plates using locking spongious screws. The pull-out force of an FDA approved locking plate system (LPS) and anonymous locking plate using the single lead head locking spongious screw (LPuLSS) was evaluated in vitro on the PCF-15 and PCF-10 osteoporotic sawbone models. A total of 28 individual plate-bone models were tested and pull-out force was evaluated on a distraction machine. The moment of separation of the screws from the bone blocks was noted. In the first study using PCF15 bone model, in Group 1, the pull-out force has an average of 606.82 N. In Group 2, the pull-out force has an average of 294.15 N. According to these results, Group 1 adhere to the bone model 206.29% more strongly than those in Group 2 (P = 0.025). In the second study using PCF 10, in Group 3, the average pull-out force was 166.50 N and in Group 4 the average was 42.83 N. According to these results, Group 3 adhere to the bone model 388.74% more strongly than those in Group 4 (P = 0.002). Locking plates are mostly used in osteoporotic bones and this study demonstrated that the single lead head locking spongious screws which is currently used worldwide have a serious technical problem which arouses with difference of the thread pitch distances on the body and on the head causes pull-out failure. |
| format | Article |
| id | doaj-art-a983624add134b94ae904909f07f32aa |
| institution | Kabale University |
| issn | 2045-2322 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | Nature Portfolio |
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| series | Scientific Reports |
| spelling | doaj-art-a983624add134b94ae904909f07f32aa2025-01-26T12:31:58ZengNature PortfolioScientific Reports2045-23222025-01-011511710.1038/s41598-025-87045-0A biomechanical study of locking spongious screws and failure rates are higher than expected in plate fixationFatih Parmaksizoglu0Onur Cetin1Sinan Kilic2Yener Ince3Departmant of Orthopedics and Traumatology, Academic HospitalDepartmant of Orthopedics and Traumatology, Istanbul Medipol University, Camlica HospitalDepartmant of Orthopedics and Traumatology, NB Kadikoy HospitalDepartmant of Orthopedics and Traumatology, Liv Ulus HospitalAbstract Locking plates have a rapidly growing process especially in the past decades and results are satisfactory especially in the osteoporotic bones compared to non-locking compression plates. There are many forms of failure in the fracture fixation of locking plates, and screw pull-out is one of the main failure reasons. In this study, we aim to investigate pull-out failure in locking plates using locking spongious screws. The pull-out force of an FDA approved locking plate system (LPS) and anonymous locking plate using the single lead head locking spongious screw (LPuLSS) was evaluated in vitro on the PCF-15 and PCF-10 osteoporotic sawbone models. A total of 28 individual plate-bone models were tested and pull-out force was evaluated on a distraction machine. The moment of separation of the screws from the bone blocks was noted. In the first study using PCF15 bone model, in Group 1, the pull-out force has an average of 606.82 N. In Group 2, the pull-out force has an average of 294.15 N. According to these results, Group 1 adhere to the bone model 206.29% more strongly than those in Group 2 (P = 0.025). In the second study using PCF 10, in Group 3, the average pull-out force was 166.50 N and in Group 4 the average was 42.83 N. According to these results, Group 3 adhere to the bone model 388.74% more strongly than those in Group 4 (P = 0.002). Locking plates are mostly used in osteoporotic bones and this study demonstrated that the single lead head locking spongious screws which is currently used worldwide have a serious technical problem which arouses with difference of the thread pitch distances on the body and on the head causes pull-out failure.https://doi.org/10.1038/s41598-025-87045-0FractureOsteoporosisLocking plateLocking Spongiosus Screw |
| spellingShingle | Fatih Parmaksizoglu Onur Cetin Sinan Kilic Yener Ince A biomechanical study of locking spongious screws and failure rates are higher than expected in plate fixation Scientific Reports Fracture Osteoporosis Locking plate Locking Spongiosus Screw |
| title | A biomechanical study of locking spongious screws and failure rates are higher than expected in plate fixation |
| title_full | A biomechanical study of locking spongious screws and failure rates are higher than expected in plate fixation |
| title_fullStr | A biomechanical study of locking spongious screws and failure rates are higher than expected in plate fixation |
| title_full_unstemmed | A biomechanical study of locking spongious screws and failure rates are higher than expected in plate fixation |
| title_short | A biomechanical study of locking spongious screws and failure rates are higher than expected in plate fixation |
| title_sort | biomechanical study of locking spongious screws and failure rates are higher than expected in plate fixation |
| topic | Fracture Osteoporosis Locking plate Locking Spongiosus Screw |
| url | https://doi.org/10.1038/s41598-025-87045-0 |
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