title: First Metatarsal Head and Medial Eminence Widths with and Without Hallux Valgus.
abstract: BACKGROUND
  Resection of the medial eminence in hallux valgus surgery is common. True hypertrophy of the medial eminence in hallux valgus is debated. No studies have compared metatarsal head width in patients with hallux valgus and control patients.
  
  
  METHODS
  We reviewed 43 radiographs with hallux valgus and 27 without hallux valgus. We measured medial eminence width, first metatarsal head width, and first metatarsal shaft width in patients with and without radiographic hallux valgus.
  
  
  RESULTS
  Medial eminence width was 1.12 mm larger in patients with hallux valgus (P < .0001). Metatarsal head width was 2.81 mm larger in patients with hallux valgus (P < .001). Metatarsal shaft width showed no significant difference (P = .63).
  
  
  CONCLUSIONS
  Metatarsal head width and medial eminence width are significantly larger on anteroposterior weightbearing radiographs in patients with hallux valgus. However, frontal plane rotation of the first metatarsal likely accounts for this difference.
authors.forename: Robin C
authors.initials: RC
authors.lastname: Lenz
authors.forename: Darshan
authors.initials: D
authors.lastname: Nagesh
authors.forename: Hannah K
authors.initials: HK
authors.lastname: Park
authors.forename: John
authors.initials: J
authors.lastname: Grady
mesh_terms: D000368:Aged; D016022:Case-Control Studies; D006214:Hallux / Q000000981:diagnostic imaging / Q000601:surgery*; D006215:Hallux Valgus / Q000000981:diagnostic imaging / Q000601:surgery*; D006801:Humans; D008682:Metatarsal Bones / Q000000981:diagnostic imaging / Q000601:surgery*; D008875:Middle Aged; D010027:Osteotomy / Q000379:methods*; D010147:Pain Measurement; D011859:Radiography / Q000379:methods; D016059:Range of Motion, Articular / Q000502:physiology*; D020127:Recovery of Function; D012016:Reference Values; D018570:Risk Assessment; D012720:Severity of Illness Index; D016896:Treatment Outcome; D016474:Weight-Bearing