title: Medial deviation of the first metatarsal in incipient hallux valgus deformity.
abstract: BACKGROUND
  The aim of this study was to determine whether excessive medial deviation of the first metatarsal (excessive intermetatarsal angle) is present in the initial phase of hallux valgus.
  
  
  METHODS
  The intermetatarsal angle between the first and second metatarsals (1-2 IMA) was radiographically studied in 49 normal feet and in 49 feet with mild hallux valgus deformity.
  
  
  RESULTS
  The results demonstrated a statistically significant difference in the mean intermetatarsal angle between the two groups (8.76 degrees in normal feet; 9.98 degrees in affected feet). However, we believe that is not clinically significant. Other authors, comparing the 1-2 IMA in patients with or without more advanced hallux valgus, reported greater differences than those obtained in this study.
  
  
  CONCLUSIONS
  Excessive medial deviation of the first metatarsal is not a causal factor but rather a consequence of hallux valgus deformity.
authors.affiliation: University of Seville, Podiatry, C/Avicena, s/n, Seville, Seville 41009, Spain. pmunuera@us.es
authors.forename: Pedro V
authors.initials: PV
authors.lastname: Munuera
authors.forename: Gabriel
authors.initials: G
authors.lastname: Dominguez
authors.forename: Juan
authors.initials: J
authors.lastname: Polo
authors.forename: Jesús
authors.initials: J
authors.lastname: Rebollo
mesh_terms: D000328:Adult; D005260:Female; D006215:Hallux Valgus / Q000473:pathology*; D006801:Humans; D008297:Male; D008682:Metatarsal Bones / Q000000981:diagnostic imaging / Q000473:pathology*; D011859:Radiography