title: Radiographic measurements of patients with juvenile hallux valgus compared with age-matched controls: a cohort investigation.
abstract: The purpose of this study was to investigate radiographic measurements in a cohort of patients with juvenile hallux valgus (with a hallux valgus angle > 15 degrees ) using standardized weightbearing x-rays compared with an age-matched control group. First metatarsal protrusion distance, metatarsus primus adductus angle, metatarsus adductus, first metatarsal cuneiform angle, calcaneal inclination angle, and talocalcaneal angles were assessed with discriminant functional analysis. A total of 37 sets of data were analyzed from patients with a mean age of 13.45 +/- 1.75 years. The study identified 2 significant components of juvenile hallux valgus: a positive first metatarsal protrusion distance (P <.001) and metatarsal primus adductus angle (P = .002). Discriminant functional analysis was then used to determine the best predictors of juvenile hallux valgus. This analysis allowed only 1 variable, metatarsal protrusion distance, as a predictor of whether juvenile hallux valgus was present (P < .001), with 94.3% accuracy. This study showed that a positive metatarsal protrusion distance is a significant component of juvenile hallux valgus.
authors.affiliation: Woodlands Podiatry Surgery, 6 Liege Street, Perth, Western Australia 6018, Australia. gmcclune@bigpond.net.au
authors.forename: John Gregory
authors.initials: JG
authors.lastname: McCluney
authors.forename: Paul
authors.initials: P
authors.lastname: Tinley
mesh_terms: D000293:Adolescent; D002648:Child; D015331:Cohort Studies; D005260:Female; D005529:Foot Bones / Q000000981:diagnostic imaging; D006215:Hallux Valgus / Q000000981:diagnostic imaging*; D006801:Humans; D008297:Male; D008682:Metatarsal Bones / Q000000981:diagnostic imaging*; D011859:Radiography