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What Best Protects the Inverted Weightbearing Ankle Against Further Inversion?

dc.contributor.authorAshton-Miller, James A.en_US
dc.contributor.authorOttaviani, Roberten_US
dc.contributor.authorHutchinson, Christopheren_US
dc.contributor.authorWojtys, Edward M.en_US
dc.date.accessioned2010-04-13T19:25:41Z
dc.date.available2010-04-13T19:25:41Z
dc.date.issued1996en_US
dc.identifier.citationAshton-Miller, James; Ottaviani, Robert; Hutchinson, Christopher; Wojtys, Edward (1996). "What Best Protects the Inverted Weightbearing Ankle Against Further Inversion?." The American Journal of Sports Medicine 24(6): 800-809. <http://hdl.handle.net/2027.42/67394>en_US
dc.identifier.issn0363-5465en_US
dc.identifier.urihttps://hdl.handle.net/2027.42/67394
dc.description.abstractWe measured the maximal isometric eversion moment developed under full weightbearing in 20 healthy adult men (age, 24.4 ± 3.4 years; mean ± SD) with their ankles in 15° of inversion. Tests were performed at both 0° and 32° of ankle plantar flexion in low- and in three-quarter-top shoes with and without adhesive ath letic tape or one of three proprietary ankle orthoses. At 0° of ankle plantar flexion, the mean maximal voluntary resistance of the unprotected ankle to an inversion moment was 50 ± 8 N-m; this increased by an average of 12% (or 6 N-m) when the subject wore a three- quarter-top basketball shoe. The maximal voluntary resistances to inversion moments developed with the ankles further protected by athletic tape or any of three orthoses were not significantly different. Biomechani cal calculations suggest that at 15° of inversion the fully active ankle evertor muscles isometrically developed a moment up to six times larger than that developed when an athlete wears a three-quarter-top shoe alone and more than three times larger than that developed passively when the athlete has tape or an orthosis worn inside a three-quarter-top shoe. We conclude that fully activated and strong ankle evertor muscles are the best protection for a near-maximally inverted ankle at footstrike.en_US
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dc.format.extent1085168 bytes
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dc.publisherSage Publicationsen_US
dc.titleWhat Best Protects the Inverted Weightbearing Ankle Against Further Inversion?en_US
dc.typeArticleen_US
dc.subject.hlbsecondlevelKinesiology and Sportsen_US
dc.subject.hlbtoplevelHealth Sciencesen_US
dc.description.peerreviewedPeer Revieweden_US
dc.contributor.affiliationumMed Sport, Section of Orthopaedic Surgery, University of Michigan, Ann Arbor, Michiganen_US
dc.contributor.affiliationumMed Sport, Section of Orthopaedic Surgery, University of Michigan, Ann Arbor, Michiganen_US
dc.contributor.affiliationumMed Sport, Section of Orthopaedic Surgery, University of Michigan, Ann Arbor, Michiganen_US
dc.contributor.affiliationotherBiomechanics Research Laboratory, Department of Mechanical Engineering and Applied Mechanics, Department of Biomedical Engineering, and Institute of Gerontologyen_US
dc.description.bitstreamurlhttp://deepblue.lib.umich.edu/bitstream/2027.42/67394/2/10.1177_036354659602400616.pdf
dc.identifier.doi10.1177/036354659602400616en_US
dc.identifier.sourceThe American Journal of Sports Medicineen_US
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dc.owningcollnameInterdisciplinary and Peer-Reviewed


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