A cadaveric biomechanical study designed to test between the pullout strength and the finite element method (FEM)
| Project/Area Number |
15K10408
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Orthopaedic surgery
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| Research Institution | The University of Tokushima |
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Principal Investigator |
HIGASHINO Kosaku 徳島大学, 大学院医歯薬学研究部(医学系), 徳島大学専門研究員 (80380129)
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| Co-Investigator(Kenkyū-buntansha) |
西良 浩一 徳島大学, 大学院医歯薬学研究部(医学系), 教授 (10304528)
高田 洋一郎 徳島大学, 大学院医歯薬学研究部(医学系), 特任講師 (20420549)
森本 雅俊 徳島大学, 病院, 医員 (20748701)
福井 義浩 徳島大学, 大学院医歯薬学研究部(医学系), 教授 (50144168)
酒井 紀典 徳島大学, 大学院医歯薬学研究部(医学系), 准教授 (80403731)
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| Project Period (FY) |
2015-04-01 – 2018-03-31
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| Project Status |
Completed (Fiscal Year 2017)
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| Budget Amount *help |
¥4,940,000 (Direct Cost: ¥3,800,000、Indirect Cost: ¥1,140,000)
Fiscal Year 2017: ¥260,000 (Direct Cost: ¥200,000、Indirect Cost: ¥60,000)
Fiscal Year 2016: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2015: ¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
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| Keywords | pedicle screw / biomechanics / re-directed screw / thoracolumbar spine / pullout strength / 生体力学 / 脊椎 / インプラント / 手術 / 未固定遺体 / 脊椎固定術 / 有限要素モデル / 脊椎手術 / 脊椎脊髄病学 / 有限要素法 |
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| Outline of Final Research Achievements |
Screw malposition is one of the main pitfalls of inserting pedicle screws. Intraoperatively a malpositioned screw is re-directed and inserted along the correct axis. To evaluate the pullout strength of redirected pedicle screws with a larger diameter following lateral wall breach, redirected pedicle screws of the same diameter following medial wall breach, and redirected pedicle screws with a larger diameter following medial wall breach. The pullout strength of re-directed pedicle screws after either a lateral pedicle breach or medial pedicle breach is significantly less than the pullout strength of correctly aligned screw. Redirected pedicle screws of larger diameter after a lateral or medial pedicle breach show recovery of pullout strength.
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Report
(4 results)
Research Products
(3 results)
