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Stabilizing effects of ankle bracing under a combination of inversion and axial compression loading

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Title: Stabilizing effects of ankle bracing under a combination of inversion and axial compression loading
Authors: Tohyama, Harukazu1 Browse this author →KAKEN DB
Yasuda, Kazunori Browse this author →KAKEN DB
Beynnon, Bruce D. Browse this author
Renstrom, Per A. Browse this author
Authors(alt): 遠山, 晴一1
Keywords: Ankle
Biomechanics
Brace
Inversion injury
Sprain
Issue Date: Apr-2006
Publisher: Springer
Journal Title: Knee Surgery, Sports Traumatology, Arthroscopy
Volume: 14
Issue: 4
Start Page: 373
End Page: 378
Publisher DOI: 10.1007/s00167-005-0652-7
PMID: 15959767
Abstract: The combined effects of bracing, axial compression and inversion rotation on the ankle-subtalar complexes were evaluated. Ex vivo tests under the load-controlled condition were performed on six cadaver ankle specimens using a six degree-of-freedom fixture. Inversion rotation was measured while subjecting the ankle-subtalar complex to a 2.5 N-m inversion moment and a combination of the testing variables (brace type, no brace, 178 N axial compression load, no compression load, 0° and 20° of plantar flexion) for a total of 16 tests per specimen. Three commercially available braces (two semirigid types and one lace up type) were evaluated. An axial compression load significantly decreased ankle-subtalar motion in unbraced ankles for the tested inversion moment. The contribution of bracing to stabilization of the ankle was smaller in the axial loading condition than in the no axial loading condition. The semirigid braces had greater stabilizing effects in response to the inversion moment than the lace up brace. Stabilizing effects of bracing were significantly greater in 20° of plantar flexion than in 0° of plantar flexion. The most common mechanism for an ankle sprain injury is inversion rotation on a weight-bearing ankle. Therefore, we should not overestimate stabilizing effects of bracing from evaluations of bracing without axial compression loading.
Rights: The original publication is available at www.springerlink.com
Type: article (author version)
URI: http://hdl.handle.net/2115/8435
Appears in Collections:医学院・医学研究院 (Graduate School of Medicine / Faculty of Medicine) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 遠山 晴一

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