{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,6,8]],"date-time":"2026-06-08T12:01:40Z","timestamp":1780920100157,"version":"3.54.1"},"reference-count":33,"publisher":"Wiley","issue":"8","license":[{"start":{"date-parts":[[2012,1,6]],"date-time":"2012-01-06T00:00:00Z","timestamp":1325808000000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Journal Orthopaedic Research"],"published-print":{"date-parts":[[2012,8]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:p>Previous research employing indirect measures of arch structure, such as those derived from footprints, have indicated that obesity results in a \u201cflatter\u201d foot type. In the absence of radiographic measures, however, definitive conclusions regarding the osseous alignment of the foot cannot be made. We determined the effect of body mass index (BMI) on radiographic and footprint\u2010based measures of arch structure. The research was a cross\u2010sectional study in which radiographic and footprint\u2010based measures of foot structure were made in 30 subjects (10 males, 20 female) in addition to standard anthropometric measures of height, weight, and BMI. Multiple (univariate) regression analysis demonstrated that both BMI (<jats:italic>\u03b2<\/jats:italic>\u2009=\u20090.39, <jats:italic>t<\/jats:italic><jats:sub>26<\/jats:sub>\u2009=\u20092.12, <jats:italic>p<\/jats:italic>\u2009=\u20090.04) and radiographic arch alignment (<jats:italic>\u03b2<\/jats:italic>\u2009=\u20090.51, <jats:italic>t<\/jats:italic><jats:sub>26<\/jats:sub>\u2009=\u20093.32, <jats:italic>p<\/jats:italic>\u2009&lt;\u20090.01) were significant predictors of footprint\u2010based measures of arch height after controlling for all variables in the model (<jats:italic>R<\/jats:italic><jats:sup>2<\/jats:sup>\u2009=\u20090.59, <jats:italic>F<\/jats:italic><jats:sub>3,26<\/jats:sub>\u2009=\u200912.3, <jats:italic>p<\/jats:italic>\u2009&lt;\u20090.01). In contrast, radiographic arch alignment was not significantly associated with BMI (<jats:italic>\u03b2<\/jats:italic>\u2009=\u2009\u22120.03, <jats:italic>t<\/jats:italic><jats:sub>26<\/jats:sub>\u2009=\u2009\u22120.13, <jats:italic>p<\/jats:italic>\u2009=\u20090.89) when Arch Index and age were held constant (<jats:italic>R<\/jats:italic><jats:sup>2<\/jats:sup>\u2009=\u20090.52, <jats:italic>F<\/jats:italic><jats:sub>3,26<\/jats:sub>\u2009=\u20099.3, <jats:italic>p<\/jats:italic>\u2009&lt;\u20090.01). Adult obesity does not influence osseous alignment of the medial longitudinal arch, but selectively distorts footprint\u2010based measures of arch structure. Footprint\u2010based measures of arch structure should be interpreted with caution when comparing groups of varying body composition. \u00a9 2012 Orthopaedic Research Society. Published by Wiley Periodicals, Inc. 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