title: Avascular necrosis not Charcot's.
abstract: BACKGROUND
  A case of avascular necrosis (AN) of the navicular bone, in a 24-year-old woman with Type 1 diabetes with peripheral neuropathy, in the absence of any history of direct trauma is presented. The clinical and radiological features at presentation suggested an evolving Charcot arthropathy (CA), but subsequent serial X-rays clearly confirmed AN.
  
  
  CONCLUSIONS
  Swelling and foot deformity in association with long-standing diabetic peripheral neuropathy is suggestive of CA, although AN, a less common condition, may show the same clinical features. It is therefore important to undertake further confirmatory radiological investigations if there is any doubt about the diagnosis.
authors.affiliation: Beta Cell Diabetes Centre, Chelsea and Westminster Hospital NHS Trust, London, UK. ysamarasinghe@cs.com
authors.forename: Y P
authors.initials: YP
authors.lastname: Samarasinghe
authors.forename: S L
authors.initials: SL
authors.lastname: Brunton
authors.forename: M D
authors.initials: MD
authors.lastname: Feher
mesh_terms: D000328:Adult; D000700:Analgesics / Q000627:therapeutic use; D001177:Arthropathy, Neurogenic / Q000000981:diagnostic imaging; D003922:Diabetes Mellitus, Type 1 / Q000150:complications; D003937:Diagnosis, Differential; D005260:Female; D006801:Humans; D010020:Osteonecrosis / Q000000981:diagnostic imaging* / Q000628:therapy; D011859:Radiography; D016474:Weight-Bearing
chemical_list: D000700:Analgesics