Incomplete insertion of pedicle screws triggers a higher biomechanical risk of screw loosening: mechanical tests and corresponding numerical simulations
Screw loosening is a widely reported issue after spinal screw fixation and triggers several complications. Biomechanical deterioration initially causes screw loosening. Studies have shown that incomplete insertion of pedicle screws increases the risk of screw breakage by deteriorating the local mech...
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| Format: | Article |
| Language: | English |
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Frontiers Media S.A.
2024-01-01
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| Series: | Frontiers in Bioengineering and Biotechnology |
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| Online Access: | https://www.frontiersin.org/articles/10.3389/fbioe.2023.1282512/full |
| _version_ | 1797362520158109696 |
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| author | Jie-Xiang Yang Jie-Xiang Yang Lin Luo Lin Luo Jin-Hui Liu Nan Wang Zhi-Peng Xi Jing-Chi Li Jing-Chi Li |
| author_facet | Jie-Xiang Yang Jie-Xiang Yang Lin Luo Lin Luo Jin-Hui Liu Nan Wang Zhi-Peng Xi Jing-Chi Li Jing-Chi Li |
| author_sort | Jie-Xiang Yang |
| collection | DOAJ |
| description | Screw loosening is a widely reported issue after spinal screw fixation and triggers several complications. Biomechanical deterioration initially causes screw loosening. Studies have shown that incomplete insertion of pedicle screws increases the risk of screw breakage by deteriorating the local mechanical environment. However, whether this change has a biomechanical effect on the risk of screw loosening has not been determined. This study conducted comprehensive biomechanical research using polyurethane foam mechanical tests and corresponding numerical simulations to verify this topic. Pedicle screw-fixed polyurethane foam models with screws with four different insertion depths were constructed, and the screw anchoring ability of different models was verified by toggle tests with alternating and constant loads. Moreover, the stress distribution of screw and bone-screw interfaces in different models was computed in corresponding numerical mechanical models. Mechanical tests presented better screw anchoring ability with deeper screw insertion, but parameters presented no significant difference between groups with complete thread insertion. Correspondingly, higher stress values can be recorded in the model without complete thread insertion; the difference in stress values between models with complete thread insertion was relatively slight. Therefore, incomplete thread insertion triggers local stress concentration and the corresponding risk of screw loosening; completely inserting threads could effectively alleviate local stress concentration and result in the prevention of screw loosening. |
| first_indexed | 2024-03-08T16:09:03Z |
| format | Article |
| id | doaj.art-14a0715cde81442292f2814f6b3c28af |
| institution | Directory Open Access Journal |
| issn | 2296-4185 |
| language | English |
| last_indexed | 2024-03-08T16:09:03Z |
| publishDate | 2024-01-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Bioengineering and Biotechnology |
| spelling | doaj.art-14a0715cde81442292f2814f6b3c28af2024-01-08T04:17:13ZengFrontiers Media S.A.Frontiers in Bioengineering and Biotechnology2296-41852024-01-011110.3389/fbioe.2023.12825121282512Incomplete insertion of pedicle screws triggers a higher biomechanical risk of screw loosening: mechanical tests and corresponding numerical simulationsJie-Xiang Yang0Jie-Xiang Yang1Lin Luo2Lin Luo3Jin-Hui Liu4Nan Wang5Zhi-Peng Xi6Jing-Chi Li7Jing-Chi Li8Department of Orthopedics, The Affiliated Traditional Chinese Medicine Hospital, Southwest Medical University, Luzhou, ChinaLuzhou Key Laboratory of Orthopedic Disorders, Southwest Medical University, Luzhou, Sichuan, ChinaDepartment of Orthopedics, The Affiliated Traditional Chinese Medicine Hospital, Southwest Medical University, Luzhou, ChinaLuzhou Key Laboratory of Orthopedic Disorders, Southwest Medical University, Luzhou, Sichuan, ChinaSichuan Provincial Laboratory of Orthopaedic Engineering, Department of Bone and Joint Surgery, Affiliated Hospital of Southwest Medical University, Luzhou, Sichuan, ChinaDepartment of Orthopedics, Affiliated Hospital of Integrated Traditional Chinese and Western Medicine, Nanjing University of Chinese Medicine, Nanjing, Jiangsu, ChinaDepartment of Orthopedics, Affiliated Hospital of Integrated Traditional Chinese and Western Medicine, Nanjing University of Chinese Medicine, Nanjing, Jiangsu, ChinaDepartment of Orthopedics, The Affiliated Traditional Chinese Medicine Hospital, Southwest Medical University, Luzhou, ChinaLuzhou Key Laboratory of Orthopedic Disorders, Southwest Medical University, Luzhou, Sichuan, ChinaScrew loosening is a widely reported issue after spinal screw fixation and triggers several complications. Biomechanical deterioration initially causes screw loosening. Studies have shown that incomplete insertion of pedicle screws increases the risk of screw breakage by deteriorating the local mechanical environment. However, whether this change has a biomechanical effect on the risk of screw loosening has not been determined. This study conducted comprehensive biomechanical research using polyurethane foam mechanical tests and corresponding numerical simulations to verify this topic. Pedicle screw-fixed polyurethane foam models with screws with four different insertion depths were constructed, and the screw anchoring ability of different models was verified by toggle tests with alternating and constant loads. Moreover, the stress distribution of screw and bone-screw interfaces in different models was computed in corresponding numerical mechanical models. Mechanical tests presented better screw anchoring ability with deeper screw insertion, but parameters presented no significant difference between groups with complete thread insertion. Correspondingly, higher stress values can be recorded in the model without complete thread insertion; the difference in stress values between models with complete thread insertion was relatively slight. Therefore, incomplete thread insertion triggers local stress concentration and the corresponding risk of screw loosening; completely inserting threads could effectively alleviate local stress concentration and result in the prevention of screw loosening.https://www.frontiersin.org/articles/10.3389/fbioe.2023.1282512/fullscrew looseningincomplete thread insertionbiomechanical deteriorationpedicle screwcomprehensive biomechanical research |
| spellingShingle | Jie-Xiang Yang Jie-Xiang Yang Lin Luo Lin Luo Jin-Hui Liu Nan Wang Zhi-Peng Xi Jing-Chi Li Jing-Chi Li Incomplete insertion of pedicle screws triggers a higher biomechanical risk of screw loosening: mechanical tests and corresponding numerical simulations Frontiers in Bioengineering and Biotechnology screw loosening incomplete thread insertion biomechanical deterioration pedicle screw comprehensive biomechanical research |
| title | Incomplete insertion of pedicle screws triggers a higher biomechanical risk of screw loosening: mechanical tests and corresponding numerical simulations |
| title_full | Incomplete insertion of pedicle screws triggers a higher biomechanical risk of screw loosening: mechanical tests and corresponding numerical simulations |
| title_fullStr | Incomplete insertion of pedicle screws triggers a higher biomechanical risk of screw loosening: mechanical tests and corresponding numerical simulations |
| title_full_unstemmed | Incomplete insertion of pedicle screws triggers a higher biomechanical risk of screw loosening: mechanical tests and corresponding numerical simulations |
| title_short | Incomplete insertion of pedicle screws triggers a higher biomechanical risk of screw loosening: mechanical tests and corresponding numerical simulations |
| title_sort | incomplete insertion of pedicle screws triggers a higher biomechanical risk of screw loosening mechanical tests and corresponding numerical simulations |
| topic | screw loosening incomplete thread insertion biomechanical deterioration pedicle screw comprehensive biomechanical research |
| url | https://www.frontiersin.org/articles/10.3389/fbioe.2023.1282512/full |
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