| Project/Area Number |
15K10408
|
|---|
| Research Category |
Grant-in-Aid for Scientific Research (C)
|
| Allocation Type | Multi-year Fund |
|---|
| Section | 一般 |
|---|
| Research Field |
Orthopaedic surgery
|
|---|
| Research Institution | The University of Tokushima |
|---|
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)
|
|---|
| 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)
|
|---|
| Project Period (FY) |
2015-04-01 – 2018-03-31
|
| Project Status |
Completed (Fiscal Year 2017)
|
| 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)
|
|---|
| 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 |
|---|
| 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.
|
