| Project/Area Number |
26462236
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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 | Shinshu University |
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Principal Investigator |
TAKAHASHI Jun 信州大学, 学術研究院医学系, 准教授 (60345741)
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| Co-Investigator(Kenkyū-buntansha) |
羽二生 久夫 信州大学, 学術研究院医学系, 准教授 (30252050)
小関 道彦 信州大学, 学術研究院繊維学系, 准教授 (50334503)
加藤 博之 信州大学, 学術研究院医学系, 教授 (40204490)
二木 俊匡 信州大学, 医学部附属病院, 助教(診療) (80646539)
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| Project Period (FY) |
2014-04-01 – 2017-03-31
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| Project Status |
Completed (Fiscal Year 2016)
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| Budget Amount *help |
¥4,940,000 (Direct Cost: ¥3,800,000、Indirect Cost: ¥1,140,000)
Fiscal Year 2016: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2015: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2014: ¥3,250,000 (Direct Cost: ¥2,500,000、Indirect Cost: ¥750,000)
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| Keywords | 思春期特発性側弯症 / 後方矯正固定術 / 有限要素法 |
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| Outline of Final Research Achievements |
Pedicle screw fixation is a surgical treatment option for adolescent idiopathic scoliosis and other severe spinal deformities. This study examined the mechanical states present in surgical instruments consisting of pedicle screws and a rod using experimental and analytical research procedures. The major outcomes of this study are follows: 1) The pedicle screws on both ends of the fusion area were pushed to the vertebrae, and the adjacent pedicle screws were loaded in the extracting direction. 2) The mechanical stress placed on screws depended on their spacing and securing order. For skip pedicle screw fixation, the mechanical stress exerted on the screws was lower than that on screws inserted into consecutive vertebrae. 3) In addition, this study established a fabrication method of patient-specific vertebral models based on X-ray CT images.
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