Effect of semi-rigid locking screws on the stiffness of a fracture-fixation construct: A conceptual finite-element study
Strong stiffness provided by locking-plate system has resulted in nonunion and delayed union for long bone fracture. Longer bone plate can lengthen the working length to reduce the structural stiffness of the fixation device but will enlarge skin incision. Using the semi-rigid locking screw may be h...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
SAGE Publishing
2019-06-01
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| Series: | Advances in Mechanical Engineering |
| Online Access: | https://doi.org/10.1177/1687814019854577 |
| _version_ | 1811336439311368192 |
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| author | Xiao-Hua Pan Wen-Chuan Chen Kun-Jhih Lin Kang-Ping Lin Cheng-Lung Tsai Hung-Wen Wei |
| author_facet | Xiao-Hua Pan Wen-Chuan Chen Kun-Jhih Lin Kang-Ping Lin Cheng-Lung Tsai Hung-Wen Wei |
| author_sort | Xiao-Hua Pan |
| collection | DOAJ |
| description | Strong stiffness provided by locking-plate system has resulted in nonunion and delayed union for long bone fracture. Longer bone plate can lengthen the working length to reduce the structural stiffness of the fixation device but will enlarge skin incision. Using the semi-rigid locking screw may be helpful but the efficacy was unclear. In simulated fracture model, four rigid locking screws were continually inserted beneath the fracture gap. The other four rigid/semi-rigid locking screws were equally distributed or concentrated at screw holes superior to the fracture gap. Axial compressive load was exerted to compare the biomechanical performance under various screw configurations and plate working length. Results revealed that using the semi-rigid locking screws, the structural stiffness of the fixation structure were lowered by 29.5%–45.1% comparing to the model with the same screw configuration using rigid locking screws. Semi-rigid screw models with shorter working length represented comparable flexibility of the fixation structure to the rigid locking screw model with longer working length. Compared to rigid locking screw, semi-rigid locking screw may provide similar flexibility with shorter bone plate, which may be beneficial to reduce the required plate length so that the skin incision may be minimized for fracture reduction. |
| first_indexed | 2024-04-13T17:39:29Z |
| format | Article |
| id | doaj.art-35abe522dc9b49c6a32326b170f37ded |
| institution | Directory Open Access Journal |
| issn | 1687-8140 |
| language | English |
| last_indexed | 2024-04-13T17:39:29Z |
| publishDate | 2019-06-01 |
| publisher | SAGE Publishing |
| record_format | Article |
| series | Advances in Mechanical Engineering |
| spelling | doaj.art-35abe522dc9b49c6a32326b170f37ded2022-12-22T02:37:13ZengSAGE PublishingAdvances in Mechanical Engineering1687-81402019-06-011110.1177/1687814019854577Effect of semi-rigid locking screws on the stiffness of a fracture-fixation construct: A conceptual finite-element studyXiao-Hua Pan0Wen-Chuan Chen1Kun-Jhih Lin2Kang-Ping Lin3Cheng-Lung Tsai4Hung-Wen Wei5ShenZhen BaoAn People’s Hospital, Southern Medical University, Guangzhou, ChinaDepartment of Physical Therapy and Assistive Technology, National Yang-Ming University, TaipeiDepartment of Electrical Engineering, Chung Yuan Christian University, TaoyuanDepartment of Electrical Engineering, Chung Yuan Christian University, TaoyuanDepartment of Electrical Engineering, Chung Yuan Christian University, TaoyuanDepartment of Physical Therapy and Assistive Technology, National Yang-Ming University, TaipeiStrong stiffness provided by locking-plate system has resulted in nonunion and delayed union for long bone fracture. Longer bone plate can lengthen the working length to reduce the structural stiffness of the fixation device but will enlarge skin incision. Using the semi-rigid locking screw may be helpful but the efficacy was unclear. In simulated fracture model, four rigid locking screws were continually inserted beneath the fracture gap. The other four rigid/semi-rigid locking screws were equally distributed or concentrated at screw holes superior to the fracture gap. Axial compressive load was exerted to compare the biomechanical performance under various screw configurations and plate working length. Results revealed that using the semi-rigid locking screws, the structural stiffness of the fixation structure were lowered by 29.5%–45.1% comparing to the model with the same screw configuration using rigid locking screws. Semi-rigid screw models with shorter working length represented comparable flexibility of the fixation structure to the rigid locking screw model with longer working length. Compared to rigid locking screw, semi-rigid locking screw may provide similar flexibility with shorter bone plate, which may be beneficial to reduce the required plate length so that the skin incision may be minimized for fracture reduction.https://doi.org/10.1177/1687814019854577 |
| spellingShingle | Xiao-Hua Pan Wen-Chuan Chen Kun-Jhih Lin Kang-Ping Lin Cheng-Lung Tsai Hung-Wen Wei Effect of semi-rigid locking screws on the stiffness of a fracture-fixation construct: A conceptual finite-element study Advances in Mechanical Engineering |
| title | Effect of semi-rigid locking screws on the stiffness of a fracture-fixation construct: A conceptual finite-element study |
| title_full | Effect of semi-rigid locking screws on the stiffness of a fracture-fixation construct: A conceptual finite-element study |
| title_fullStr | Effect of semi-rigid locking screws on the stiffness of a fracture-fixation construct: A conceptual finite-element study |
| title_full_unstemmed | Effect of semi-rigid locking screws on the stiffness of a fracture-fixation construct: A conceptual finite-element study |
| title_short | Effect of semi-rigid locking screws on the stiffness of a fracture-fixation construct: A conceptual finite-element study |
| title_sort | effect of semi rigid locking screws on the stiffness of a fracture fixation construct a conceptual finite element study |
| url | https://doi.org/10.1177/1687814019854577 |
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