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Three-dimensional morphological analysis of cervical foraminal stenosis using dynamic flexion-extension computed tomography images
http://hdl.handle.net/10191/00051836
http://hdl.handle.net/10191/000518365722d99a-9240-45db-bf8c-1a768e36aae0
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本文 (1.2 MB)
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| Item type | 学位論文 / Thesis or Dissertation(1) | |||||
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| 公開日 | 2020-08-31 | |||||
| タイトル | ||||||
| タイトル | Three-dimensional morphological analysis of cervical foraminal stenosis using dynamic flexion-extension computed tomography images | |||||
| 言語 | ||||||
| 言語 | eng | |||||
| 資源タイプ | ||||||
| 資源タイプ識別子 | http://purl.org/coar/resource_type/c_46ec | |||||
| 資源タイプ | thesis | |||||
| その他のタイトル | ||||||
| その他のタイトル | 動態CT画像を用いた頚椎椎間孔狭窄の3次元形態解析 | |||||
| 著者 |
Mizouchi, Tatsuki
× Mizouchi, Tatsuki |
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| 著者別名 | ||||||
| 識別子Scheme | WEKO | |||||
| 識別子 | 178075 | |||||
| 姓名 | 溝内, 龍樹 | |||||
| 抄録 | ||||||
| 内容記述タイプ | Abstract | |||||
| 内容記述 | Background: Morphological features of foraminal stenosis in cervical spondylotic radiculopathy and the adequate extent of facet resection in posterior cervical foraminotomy remain uncertain. Herein, we evaluated quantitatively foraminal widths in cervical spondylotic radiculopathy on dynamic flexion-extension computed tomography using a novel three-dimensional analysis method and determined the extent of facet resection in posterior cervical foraminotomy. Methods: Seventeen patients undergoing posterior cervical foraminotomy for cervical spondylotic radiculopathy were evaluated. A neuroforamen three-dimensional model was built from preoperative images of flexion-extension computed tomography myelography, and an ordinary cervical spine coordinate system and an original neuroforaminal coordinate system, were established. In the neuroforaminal coordinate system, minimum areas perpendicular to the long axis by the slices from inlet to outlet of neuroforamen and narrowest foraminal width in a slice of minimum area were measured. The location of the narrowest region from inlet of the foramen was calculated. Ratios of minimum and sufficient facet resection were obtained from the location of the narrowest region in the neuroforaminal coordinate system. Results: The narrowest foraminal widths (flexion/extension) in the cervical spine coordinate system and the neuroforaminal coordinate system were 2.9/2.3 and 2.6/1.9 mm, respectively. The mean values of the location of the narrowest region (flexion/extension) were 0.27/0.22 and 0.50/0.45 mm, respectively, and the narrowest region in the neuroforaminal coordinate system was located on the outer side than in thecervical spine coordinate system (p < 0.001). The ratios of minimum and sufficient facet resection were23 ± 8% and 32 ± 9%, respectively. Conclusions: The narrowest regions both in flexion and extension are located at the middle of the foramen based on the neuroforaminal coordinate system. Ordinary evaluation of axial computed tomography images likely underestimates the extent of facet resection, whereas certain extent of facet resection does not exceed 50% in cases with single-level cervical spondylotic radiculopathy. Study design: A retrospective case control study. | |||||
| 内容記述 | ||||||
| 内容記述タイプ | Other | |||||
| 内容記述 | Journal of Orthopaedic Science. 2019 | |||||
| DOI | ||||||
| 識別子タイプ | DOI | |||||
| 関連識別子 | info:doi/10.1016/j.jos.2019.11.002 | |||||
| 権利 | ||||||
| 権利情報 | 【○!C】 2019 The Japanese Orthopaedic Association. Published by Elsevier B.V. All rights reserved. | |||||
| 著者版フラグ | ||||||
| 値 | ETD | |||||
| 学位名 | ||||||
| 学位名 | 博士(医学) | |||||
| 学位授与機関 | ||||||
| 学位授与機関名 | 新潟大学 | |||||
| 学位授与年月日 | ||||||
| 学位授与年月日 | 2020-03-23 | |||||
| 学位授与番号 | ||||||
| 学位授与番号 | 13101甲第4713号 | |||||
| 学位記番号 | ||||||
| 内容記述タイプ | Other | |||||
| 内容記述 | 新大院博(医)甲第947号 | |||||
