{"id":5628,"date":"2025-01-17T13:12:38","date_gmt":"2025-01-17T12:12:38","guid":{"rendered":"https:\/\/preview.centre-assal.ch\/?p=5628"},"modified":"2025-09-02T10:40:39","modified_gmt":"2025-09-02T08:40:39","slug":"a-comprehensive-weightbearing-computed-tomography-study-on-patients-with-hallux-valgus-exploring-multiplanar-deformity-interrelationships","status":"publish","type":"publications","link":"https:\/\/centre-assal.ch\/en\/publications\/a-comprehensive-weightbearing-computed-tomography-study-on-patients-with-hallux-valgus-exploring-multiplanar-deformity-interrelationships\/","title":{"rendered":"A Comprehensive Weightbearing Computed Tomography Study on Patients With Hallux Valgus: Exploring Multiplanar Deformity Interrelationships"},"content":{"rendered":"<p><strong>Background:<\/strong>\u00a0Hallux valgus (HV) is a complex, multiplanar deformity. In this study, we examined the interrelationships<br \/>\nbetween various components of this deformity using weightbearing computed tomography (WBCT). We hypothesized<br \/>\nthat the severity of traditional axial plane deformities would correlate with malpositioning of the metatarsosesamoid<br \/>\ncomplex, first-ray coronal rotational deformity, and malalignment of the hindfoot and midfoot. The findings may offer<br \/>\nvaluable insights for guiding the correction of HV deformities.<\/p>\n<p><strong>Methods:<\/strong>\u00a0Patients with an HV angle greater than 15 degrees who underwent WBCT were included. Traditional<br \/>\n2-dimensional parameters were semiautomatically assessed. Manual measurements included hindfoot and midfoot WBCT<br \/>\nparameters, for example, foot and ankle offset, talar posterior and middle facet morphology, and forefoot arch angle.<br \/>\nFirst-ray parameters, including first metatarsal rotation, sesamoid rotation angle, hallucal pronation angle, and sesamoid<br \/>\nposition, were measured using established methods. Patients were categorized by hindfoot moment arm values to evaluate<br \/>\nhindfoot-forefoot relationships.<\/p>\n<p><strong>Results:<\/strong>\u00a0Sixty-eight feet (53 patients) were included. Manual measurements exhibited excellent interobserver reliability,<br \/>\nwith ICCs of 0.845 to 0.987 and a kappa coefficient of 0.899 for the sesamoid position. The mean HV angle was 27.4 \u00b1 7.8<br \/>\ndegrees, whereas the mean IM angle was 15.8 \u00b1 3.5 degrees. Significant correlations were observed between the HV<br \/>\nand intermetatarsal (IM) angles, with all metatarsosesamoid complex parameters and first-ray coronal plane rotational<br \/>\nparameters distal to the metatarsal head. The axial and sagittal talar\u2013first metatarsal angles correlated with the HV angle<br \/>\nbut not with the IM angle. Significant differences in the HV angle, sagittal first tarsal\u2013metatarsal joint angle, and first<br \/>\nmetatarsal head rotation were observed between the hindfoot moment arm groups, as confirmed by post hoc analysis.<\/p>\n<p><strong>Conclusion:<\/strong>\u00a0The findings support our hypothesis, identifying significant correlations between metatarsosesamoid complex<br \/>\nmalposition, distal first-ray coronal pronation, and traditional axial plane deformities in HV. Some hindfoot\u2013midfoot<br \/>\nalignments correlated with the HV angle but not with the IM angle.<\/p>\n<p><strong>Level of Evidence:<\/strong>\u00a0Level IV: case series.<\/p>","protected":false},"featured_media":0,"template":"","categorie_publications":[89],"class_list":["post-5628","publications","type-publications","status-publish","hentry","categorie_publications-article-scientifique"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.8 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>A Comprehensive Weightbearing Computed Tomography Study on Patients With Hallux Valgus: Exploring Multiplanar Deformity Interrelationships - Centre Assal<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/centre-assal.ch\/en\/publications\/a-comprehensive-weightbearing-computed-tomography-study-on-patients-with-hallux-valgus-exploring-multiplanar-deformity-interrelationships\/\" \/>\n<meta property=\"og:locale\" content=\"en_GB\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"A Comprehensive Weightbearing Computed Tomography Study on Patients With Hallux Valgus: Exploring Multiplanar Deformity Interrelationships - Centre Assal\" \/>\n<meta property=\"og:description\" content=\"Background:\u00a0Hallux valgus (HV) is a complex, multiplanar deformity. In this study, we examined the interrelationships between various components of this deformity using weightbearing computed tomography (WBCT). We hypothesized that the severity of traditional axial plane deformities would correlate with malpositioning of the metatarsosesamoid complex, first-ray coronal rotational deformity, and malalignment of the hindfoot and midfoot. 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