{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,2,13]],"date-time":"2026-02-13T09:42:09Z","timestamp":1770975729419,"version":"3.50.1"},"reference-count":49,"publisher":"Wiley","issue":"6","license":[{"start":{"date-parts":[[2014,5,27]],"date-time":"2014-05-27T00:00:00Z","timestamp":1401148800000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Arthritis Care &amp;amp; Research"],"published-print":{"date-parts":[[2014,6]]},"abstract":"<jats:sec><jats:title>Objective<\/jats:title><jats:p>The first ray plays a role in the development of bunion foot deformity, but for unknown reasons. This prospective, cross\u2010sectional study investigated first ray kinematics in women with rheumatoid arthritis (RA) and bunion.<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>Nine participants having RA\u2010bunion were analyzed in comparison to a control group (n = 10). Data were acquired using a magnetic resonance scanner. Conditions were standardized to simulate gait midstance, heel off, and terminal stance. Foot posture (hallux angle, intermetatarsal angle, arch angle, and calcaneus angle) and relative first ray position angles\/helical axis parameters registered across gait conditions were measured. An analysis of variance model compared data between groups and across conditions, and correlation assessed the relationship between selected variables.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>Eversion of the calcaneus averaged 9\u00b0, and adduction of the first ray was increased (F = 6.29, <jats:italic>P<\/jats:italic> = 0.02) by \u22654.6\u00b0 across conditions in the RA\u2010bunion group. There was an interaction (F = 7.73, <jats:italic>P<\/jats:italic> = 0.01) for the first ray axis. Followup comparisons identified increased inclination of the first ray axis over middle stance compared to late stance in the group with RA and bunion. There was moderate correlation (r = \u22120.42) between the calcaneus angle of eversion and inclination of the first ray axis.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusion<\/jats:title><jats:p>Optimal treatment for bunion has not been defined. This research identified calcaneus eversion and first ray adduction, as well as inclination of the first ray axis as risk factors of bunion. This result may inform the evaluation and treatment of bunion in women with RA.<\/jats:p><\/jats:sec>","DOI":"10.1002\/acr.22241","type":"journal-article","created":{"date-parts":[[2013,11,27]],"date-time":"2013-11-27T09:48:58Z","timestamp":1385545738000},"page":"837-843","source":"Crossref","is-referenced-by-count":12,"title":["First Ray Kinematics in Women With Rheumatoid Arthritis and Bunion Deformity: A Gait Simulation Imaging Study"],"prefix":"10.1002","volume":"66","author":[{"given":"Ward M.","family":"Glasoe","sequence":"first","affiliation":[{"name":"University of Minnesota Medical School Minneapolis"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Daniel D.","family":"Jensen","sequence":"additional","affiliation":[{"name":"University of Minnesota Medical School Minneapolis"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Brian B.","family":"Kampa","sequence":"additional","affiliation":[{"name":"University of Minnesota Medical School Minneapolis"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Lara K.","family":"Karg","sequence":"additional","affiliation":[{"name":"University of Minnesota Medical School Minneapolis"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Angela R.","family":"Krych","sequence":"additional","affiliation":[{"name":"University of Minnesota Medical School Minneapolis"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Fernando A.","family":"Pena","sequence":"additional","affiliation":[{"name":"University of Minnesota Medical School Minneapolis"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Paula M.","family":"Ludewig","sequence":"additional","affiliation":[{"name":"University of Minnesota Medical School Minneapolis"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"311","published-online":{"date-parts":[[2014,5,27]]},"reference":[{"key":"e_1_2_6_2_1","doi-asserted-by":"publisher","DOI":"10.1080\/030097498440804"},{"key":"e_1_2_6_3_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.clinbiomech.2007.08.009"},{"key":"e_1_2_6_4_1","first-page":"345","article-title":"Aging mechanisms in arthritic disease","volume":"14","author":"Sacitharan PK","year":"2012","journal-title":"Discov Med"},{"key":"e_1_2_6_5_1","first-page":"1918","article-title":"Multisegment foot motion during gait: proof of concept in rheumatoid arthritis","volume":"31","author":"Woodburn J","year":"2004","journal-title":"J Rheumatol"},{"key":"e_1_2_6_6_1","first-page":"84","article-title":"Foot deformities in rheumatoid arthritis and relevance of disease severity","volume":"27","author":"Shi K","year":"2000","journal-title":"J Rheumatol"},{"key":"e_1_2_6_7_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.gaitpost.2008.04.004"},{"key":"e_1_2_6_8_1","doi-asserted-by":"publisher","DOI":"10.1097\/00124743-199512000-00001"},{"key":"e_1_2_6_9_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.joca.2012.06.007"},{"key":"e_1_2_6_10_1","doi-asserted-by":"publisher","DOI":"10.2522\/ptj.20080375"},{"key":"e_1_2_6_11_1","doi-asserted-by":"publisher","DOI":"10.1093\/rheumatology\/41.12.1406"},{"key":"e_1_2_6_12_1","doi-asserted-by":"publisher","DOI":"10.3113\/FAI.2007.0759"},{"key":"e_1_2_6_13_1","doi-asserted-by":"crossref","first-page":"666","DOI":"10.1016\/j.jbiomech.2009.10.027","article-title":"Error in the description of foot kinematics due to violation of rigid body assumptions","volume":"43","author":"Nester CJ","year":"2010","journal-title":"J Biomech"},{"key":"e_1_2_6_14_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.jbiomech.2007.05.019"},{"key":"e_1_2_6_15_1","doi-asserted-by":"crossref","first-page":"124","DOI":"10.1177\/1071100712460217","article-title":"First ray instability in hallux valgus deformity: a radiokinematic and pedobarographic analysis","volume":"34","author":"Dietze A","year":"2013","journal-title":"Foot Ankle Int"},{"key":"e_1_2_6_16_1","doi-asserted-by":"crossref","first-page":"1","DOI":"10.1186\/1471-2474-13-14","article-title":"Investigation of first ray mobility during gait by kinematic fluoroscopic imaging: a novel method","volume":"13","author":"Martin H","year":"2012","journal-title":"BMC Musculoskelet Disorders"},{"key":"e_1_2_6_17_1","doi-asserted-by":"publisher","DOI":"10.7547\/87507315-86-1-4"},{"key":"e_1_2_6_18_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.jbiomech.2004.12.023"},{"key":"e_1_2_6_19_1","doi-asserted-by":"crossref","first-page":"1551","DOI":"10.2522\/ptj.20130025","article-title":"An image\u2010based gait simulation study of tarsal kinematics in women with hallux valgus","volume":"93","author":"Glasoe WM","year":"2013","journal-title":"Phys Ther"},{"key":"e_1_2_6_20_1","doi-asserted-by":"publisher","DOI":"10.1016\/j.gaitpost.2008.02.004"},{"key":"e_1_2_6_21_1","first-page":"345","article-title":"The mechanics of the foot: part I. 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