title: Tendon shift in hallux valgus: observations at MR imaging.
abstract: OBJECTIVE
  This study was undertaken to demonstrate a shift in tendon alignment at the first metatarsophalangeal joint in patients with hallux valgus by means of magnetic resonance imaging.
  
  
  METHODS
  Ten normal feet and 20 feet with the hallux valgus deformity conforming to conventional clinical and radiographic criteria were prospectively studied using magnetic resonance imaging. Correlation was made between tendon position at the first metatarsophalangeal joint and the severity of the hallux valgus deformity.
  
  
  RESULTS
  There is a significant shift in tendon position at the first metatarsophalangeal joint of patients with hallux valgus. The insertion of the abductor hallucis tendon is markedly plantarward and the flexor and extensor tendons bowstring at the first metatarsophalangeal joint compared with patients without the deformity. The severity of the tendon shift correlates with the hallux valgus angle and clinical severity of the hallux valgus deformity in each case.
  
  
  CONCLUSIONS
  Patients with hallux valgus have a significant tendon shift at the first metatarsophalangeal joint which appears to contribute to development of the deformity.
authors.affiliation: Department of Radiology, Boston University Medical Center Hospital, MA 02118, USA.
authors.forename: S
authors.initials: S
authors.lastname: Eustace
authors.forename: D
authors.initials: D
authors.lastname: Williamson
authors.forename: M
authors.initials: M
authors.lastname: Wilson
authors.forename: J
authors.initials: J
authors.lastname: O'Byrne
authors.forename: L
authors.initials: L
authors.lastname: Bussolari
authors.forename: M
authors.initials: M
authors.lastname: Thomas
authors.forename: M
authors.initials: M
authors.lastname: Stephens
authors.forename: J
authors.initials: J
authors.lastname: Stack
authors.forename: B
authors.initials: B
authors.lastname: Weissman
mesh_terms: D016022:Case-Control Studies; D006215:Hallux Valgus / Q000473:pathology*; D006801:Humans; D008279:Magnetic Resonance Imaging; D008683:Metatarsophalangeal Joint / Q000473:pathology; D011446:Prospective Studies; D013710:Tendons / Q000473:pathology*