Three-Dimensional Kinematic Analysis of the Distal Radioulnar Joint in the Axial-Loaded Extended Wrist Position.

• Material Type: 博士論文
• Title: Three-Dimensional Kinematic Analysis of the Distal Radioulnar Joint in the Axial-Loaded Extended Wrist Position.
• Author/Editor: Hojo, Junya; Omokawa, Shohei; Iida, Akio; Ono, Hiroshi; Moritomo, Hisao; Tanaka, Yasuhito
• Author Heading: Hojo, Junya; Omokawa, Shohei; Iida, Akio; Ono, Hiroshi; Moritomo, Hisao; Tanaka, Yasuhito
• Publication, Distribution, etc.: Elsevier
• Publication Date: 2019-04
• Publication Date (W3CDTF): 2019-04
• Alternative Title: 手関節伸展荷重時の遠位橈尺関節の3次元動態解析
• Periodical title: The Journal of hand surgery
• No. or year of volume/issue: 44 4
• Volume: 44
• Issue: 4
• Pages: 336.e1-336.e6
• ISSN (Periodical Title): ISSN : 0363-5023
• Degree grantor/type: 奈良県立医科大学
• Date Granted: 2019-03-15
• Dissertation Number: 甲第704号
• Degree Type: 博士（医学）
• Text Language Code: eng
• Subject Heading: Distal radioulnar joint; extended wrist; ligaments; loaded wrist; 3-dimensional kinematic analysis
• Target Audience: 一般
• Note (General): type:Thesis; PURPOSE: To assess the wrist joints of healthy volunteers in extended and loaded states versus the unloaded state by using computed tomography (CT) to analyze the in vivo 3-dimensional movements in the distal radioulnar joint (DRUJ). METHODS: The dominant arms of 9 volunteers with healthy wrists were studied. We mounted a compression device onto the elbows in an inverted position. A 0-kg and 7-kg load each was applied during low-dose radiation CT imaging and a bone model was produced. We marked the insertion sites for the 4 radioulnar ligaments stabilizing the DRUJ: palmar superficial radioulnar ligament (PS-RUL), dorsal superficial radioulnar ligament (DS-RUL), dorsal deep radioulnar ligament (DD-RUL), and palmar deep radioulnar ligament (PD-RUL). Using Marai's method, each ligament was virtualized and the length of each simulated ligament was measured. We also computed the 3-dimensional displacement and corresponding rotation of the distal ulna where it comes into contact with the radius in the sigmoid notch. RESULTS: The lengths of palmar ligaments (PS-RUL and PD-RUL) increased significantly under loaded conditions, and although not significant, the length of dorsal ligaments (DS-RUL and DD-RUL) tended to increase. When the wrist was loaded, the ulna rotated toward the open palmar side. CONCLUSIONS: The length of simulated radioulnar ligaments increased when the wrist joint was loaded in an extended position. This kinematic movement of DRUJ separation under a loading condition is different from physiological active movement. CLINICAL RELEVANCE: The 3-dimensional kinematic analysis revealed that palmar radioulnar ligaments were stretched during axial loading, suggesting that a tear of the palmer ligament can result from a fall on an outstretched hand.; 博士（医学）・甲第704号・平成31年3月15日; © 2019 by the American Society for Surgery of the Hand. All rights reserved.; identifier:The Journal of hand surgery Vol.44 No.4 p.336.e1-336.e6 (2019 Apr); identifier:03635023; identifier:http://ginmu.naramed-u.ac.jp/dspace/handle/10564/3552; identifier:The Journal of hand surgery, 44(4): 336.e1-336.e6
• Access Restrictions: インターネット公開
• Related Material (DOI): 10.1016/j.jhsa.2018.06.019
• 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/10564/3552/1/01%e7%94%b2704%e6%9c%ac%e6%96%87%e3%81%ae%e8%a6%81%e6%97%a8.pdf fulltext

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