Biomechanical study of isolated radial head dislocation.

• Material Type: 博士論文
• Title: Biomechanical study of isolated radial head dislocation.
• Author/Editor: Hayami, Naoki; Omokawa, Shohei; Iida, Akio; Kraisarin, Jirachart; Moritomo, Hisao; Mahakkanukrauh, Pasuk; Shimizu, Takamasa; Kawamura, Kenji; Tanaka, Yasuhito
• Author Heading: Hayami, Naoki; Omokawa, Shohei; Iida, Akio; Kraisarin, Jirachart; Moritomo, Hisao; Mahakkanukrauh, Pasuk; Shimizu, Takamasa; Kawamura, Kenji; Tanaka, Yasuhito
• Publication, Distribution, etc.: BioMed Central
• Publication Date: 2017-11-21
• Publication Date (W3CDTF): 2017-11-21
• Alternative Title: 橈骨頭単独脱臼に関する生体力学的研究
• Periodical title: BMC musculoskeletal disorders
• No. or year of volume/issue: 18 1
• Volume: 18
• Issue: 1
• Pages: Article No.470-
• ISSN (Periodical Title): ISSN : 1471-2474
• Degree grantor/type: 奈良県立医科大学
• Date Granted: 2018-03-15
• Dissertation Number: 甲第683号
• Degree Type: 博士（医学）
• Text Language Code: eng
• Subject Heading: Radial head dislocation; Biomechanical study; Annular ligament; Quadrate ligament; Interosseous membrane; Ligament reconstruction
• Target Audience: 一般
• Note (General): type:Thesis; BACKGROUND: Isolated radial head dislocation is a rare injury with an unclear pathomechanism, and the treatment is controversial. The purpose of the present study was to investigate the biomechanical contributions of the annular ligament, quadrate ligament, interosseous membrane, and annular ligament reconstructions to proximal radioulnar joint stability. METHODS: Five fresh frozen cadaveric upper extremities were amputated above the elbow and solidly fixed on a customized jig. Radial head dislocation was reproduced by sequential sectioning of ligamentous structures and passive mobility testing. Radial head displacement during mobility testing was measured with an electromagnetic tracking device in three forearm rotation positions. The data were compared among different sectioning stages and between two types of simulated ligamentous reconstruction. RESULTS: Lateral displacement of the radial head significantly increased in the neutral forearm rotation after annular ligament sectioning (46 ± 10%, p < 0.05). After quadrate ligament sectioning, we found significant posterior (67 ± 36%, p < 0.05) and lateral (74 ± 24%, p < 0.01) displacement in neutral forearm rotation and pronation. Significant radial head displacement was found in all directions and in all forearm positions after sequential sectioning of the proximal half of the interosseous membrane. Anatomical annular ligament reconstruction stabilized the proximal radioulnar joint except for anterior laxity in neutral forearm rotation (15 ± 6%, p < 0.05). The radial head with Bell Tawse procedure was significantly displaced in all directions. CONCLUSION: The direction of radial head instability varied depending on the degree of soft tissue sectioning and specific forearm rotation. Anterior radial head dislocation may involve more severe ligament damage than other types of dislocation. Anatomical annular ligament reconstruction provided multidirectional radial head stability.; 博士（医学）・甲第683号・平成30年3月15日; © The Author(s). 2017 Open Access This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.; identifier:BMC musculoskeletal disorders Vol.18 No.1 Article No.470 (2017 Nov); identifier:14712474; identifier:http://ginmu.naramed-u.ac.jp/dspace/handle/10564/3428; identifier:BMC musculoskeletal disorders, 18(1): Article No.470
• Access Restrictions: インターネット公開
• Related Material (DOI): 10.1186/s12891-017-1829-1
• Data Provider (Database): 国立情報学研究所 : 学術機関リポジトリデータベース（IRDB）（機関リポジトリ）; https://irdb.nii.ac.jp
• Original Data Provider (Database): 奈良県立医科大学 : 奈良県立医科大学機関リポジトリ GINMU

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http://ginmu.naramed-u.ac.jp/dspace/bitstream/10564/3428/1/01%e7%94%b2683%e6%9c%ac%e6%96%87%e3%81%ae%e8%a6%81%e6%97%a8.pdf fulltext

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