2017
DOI: 10.2106/jbjs.16.00542
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Evaluation of First-Ray Mobility in Patients with Hallux Valgus Using Weight-Bearing CT and a 3-D Analysis System

Abstract: The results of this study suggest that loading of the foot causes significant 3-D displacement not only at the TMT joint but also at the other joints of the first ray. There is increased mobility in the first ray in patients who have hallux valgus.

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Cited by 138 publications
(139 citation statements)
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“…In the present study, we focused on the first metatarsal (1MT) bone, because lesions of many foot diseases are typically located in 1MT, such as the hallux valgus, hallux rigidus, and hallucal sesamoid disorders. Several studies have reported that the 1MT in hallux valgus patients showed pronation under weight‐bearing (Eustace et al, ; Eustace et al, ; Saltzman et al, ; Okuda et al, ; Collan et al, ; Kim et al, ; Kimura et al, ). These clinical studies suggest that pronation of the 1MT is a key pathology in the hallux valgus; however, there has been no evidence whether pronation of the 1MT occurs in asymptomatic feet due to natural weight‐bearing.…”
Section: Introductionmentioning
confidence: 99%
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“…In the present study, we focused on the first metatarsal (1MT) bone, because lesions of many foot diseases are typically located in 1MT, such as the hallux valgus, hallux rigidus, and hallucal sesamoid disorders. Several studies have reported that the 1MT in hallux valgus patients showed pronation under weight‐bearing (Eustace et al, ; Eustace et al, ; Saltzman et al, ; Okuda et al, ; Collan et al, ; Kim et al, ; Kimura et al, ). These clinical studies suggest that pronation of the 1MT is a key pathology in the hallux valgus; however, there has been no evidence whether pronation of the 1MT occurs in asymptomatic feet due to natural weight‐bearing.…”
Section: Introductionmentioning
confidence: 99%
“…Weight-bearing radiography of the foot is an established and important method of assessment in clinical practice (Eustace et al, 1993;Eustace et al, 1994;Okuda et al, 2007); however, the two-dimensional (2D) analysis using radiography limits the evaluation of the morphological changes of the foot due to weight-bearing because of the foot's complex three-dimensional (3D) structure. To overcome this limitation, CT imaging has been used to analyze the morphological change of the foot under weight-bearing conditions (Collan et al, 2013;Tuominen et al, 2013;Carrino et al, 2014;Kim et al, 2015;Kimura et al, 2017;Watanabe et al, 2017;Barg et al, 2018). In previous studies, CT images were obtained with upright cone-beam CT scanners (Collan et al, 2013;Tuominen et al, 2013;Carrino et al, 2014) or with a conventional CT scanner under simulated weight in a prone position (Kim et al, 2015;Kimura et al, 2017;Watanabe et al, 2017).…”
Section: Introductionmentioning
confidence: 99%
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“…Recently, some clinical studies have argued that the onset of foot pathologies such as hallux valgus might be related to the torsional pattern of the MT heads (Okuda et al, ; Mortier et al, ). This argument seems to be reasonable, as hallux valgus is generally associated with flattening of the longitudinal arch (Mann and Coughlin, ; Kalen and Brecher, ; Jahss, ; Komeda et al, ; Kimura et al, ), and the flatness of the foot might be linked to the torsional pattern of the MT heads, as noted above. If this understanding is correct, it is expected that the torsional pattern of the MT heads may alter with aging, because the prevalence of hallux valgus, and flatfoot deformity, increases with age, particularly in women (Caselli and George, ; Coughlin and Jones, ; Chaiwanichsiri et al, ; Cho et al, ; Nguyen et al, ; Nix et al, ; Dufour et al, ; Kimura et al, ).…”
Section: Introductionmentioning
confidence: 99%