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Please use this identifier to cite or link to this item: http://hdl.handle.net/10564/3069

Title: Effect of wrist position on distal radioulnar joint stability: a biomechanical study.
Other Titles: 手関節肢位が遠位橈尺関節の安定性に及ぼす影響
Authors: Iida, Akio
Omokawa, Shohei
Moritomo, Hisao
Omori, Shinsuke
Kataoka, Toshiyuki
Aoki, Mitsuhiro
Wada, Takuro
Fujimiya, Mineko
Tanaka, Yasuhito
飯田, 昭夫
面川, 庄平
森友, 寿夫
大森, 信介
片岡, 利行
青木, 光広
和田, 卓郎
藤宮, 峯子
田中, 康仁
Keywords: biomechanics
distal radioulnar joint
wrist position
triangular fibrocartilage complex
Issue Date: Oct-2014
Publisher: Wiley / Orthopaedic Research Society
Citation: Journal of orthopaedic research Vol.32 No.10 p.1247-1251(2014.10)
Abstract: We investigated distal radioulnar joint (DRUJ) stability in different wrist positions and examined the relative contribution of each ligamentous component of the triangular fibrocartilage complex (TFCC) to DRUJ stability. We used nine fresh-frozen cadavers. The humerus and ulna were fixed at 90° elbow flexion. The radiocarpal unit was translated relative to the ulna in dorsopalmar directions with the wrist in five positions. Displacement of the unit was measured by an electromagnetic tracking device. Magnitudes of displacement were compared between different wrist positions in various sectioning stages: ulnocarpal ligament (UCL) sectioning, radioulnar ligaments (RUL) sectioning, and extensor carpi ulnaris (ECU) floor sectioning. Wrist position and sectioning stage significantly influenced the displacement. In intact wrists, the displacement in wrist extension was significantly lower than that in neutral. However, after UCL sectioning, there were no longer any significant differences. After RUL sectioning, the displacement in radial deviation was significantly lower than that in neutral. Following ECU floor sectioning, there were no longer any significant differences. Thus, in intact wrists, DRUJ stability in wrist extension is likely due to tightening of the UCL. After complete RUL sectioning, DRUJ is stabilized in radial deviation due to tightening of the ECU floor.
Description: 博士(医学)・甲第636号・平成27年5月28日
© 2014 Orthopaedic Research Society. Published by Wiley Periodicals, Inc.
URI: http://hdl.handle.net/10564/3069
ISSN: 07360266
Academic Degrees and number: 24601A636
Degree-granting date: 2015-05-28
Degree name: 博士(医学)
Degree-granting institutions: 奈良県立医科大学
Appears in Collections:2015年度

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