title: Outcome of fusion of a painful accessory navicular to the primary navicular.
abstract: BACKGROUND
  An accessory navicular bone may cause pain due to continuous irritation at its interface with the navicular. The authors performed the fusion of the accessory navicular and navicular with screw(s) to relieve the symptoms while preserving the continuity of the posterior tibial tendon.
  
  
  METHODS
  We analyzed the clinical and radiological outcomes of 31 consecutive patients (34 feet) with a painful type II accessory navicular.
  
  
  RESULTS
  Bone union was confirmed on plain radiography in 28 (82%) of 34 feet. Twenty-two patients (24 feet) were assessed as excellent, two (three feet) as good, and one (one foot) as fair. Nonunion developed in six patients (six feet) and was defined as poor.
  
  
  CONCLUSIONS
  When conservative treatment fails to relieve pain in a type II accessory navicular, fusion of the accessory navicular to the navicular may successfully relieve pain without disrupting the tibialis posterior tendon insertion.
authors.affiliation: Department of Orthopaedic Surgery, King-Nam St. Mary's Hospital, The Catholic University of Korea, College of Medicine, Seoul, Korea.
authors.forename: Jin-Wa
authors.initials: JW
authors.lastname: Chung
authors.forename: In-Tak
authors.initials: IT
authors.lastname: Chu
mesh_terms: D000328:Adult; D005260:Female; D006801:Humans; D008297:Male; D010146:Pain / Q000209:etiology / Q000601:surgery; D012189:Retrospective Studies; D013639:Tarsal Bones / Q000002:abnormalities* / Q000503:physiopathology / Q000601:surgery*; D016896:Treatment Outcome; D055815:Young Adult